Hickson Compact Group

Hickson Compact Group (abbreviation HCG ) is a catalog of 100 galaxy groups published by Paul Hickson in 1982.

The best-known group of galaxies contained in the catalog is Stephan's quintet .

Search criteria

Paul Hickson used the red plates from the Palomar Observatory Sky Survey to search for compact groups of galaxies. To this end, he set up three criteria that are still generally used today to find new compact groups of galaxies:

Population criterion: N ≥ 4

Isolation criterion: Θ ≥ 3θ _G

Compactness criterion: μ _G <26.0

In these formulas, N is the total number of galaxies that are at most three magnitudes darker than the brightest galaxy in the group. μ _G is defined as the average total magnitude over these same galaxies per arc-second square (over the angular diameter θ _G ). θ _G describes the angular diameter of the largest concentric circle that does not contain any other galaxies within the limit magnitudes.

With the help of these criteria, galaxy clusters and large groups of galaxies can be singled out quickly.

The groups were then classified based on the morphological properties of the brightest galaxy and the luminosity difference between the brightest and second brightest galaxy.

S: the brightest galaxy in the group is a spiral galaxy. E: the brightest galaxy in the group is an elliptical or S0 galaxy. I: the difference in brightness between the brightest and the second brightest galaxy in the group is more than one magnitude. II: The difference in brightness between the brightest and the second brightest group of galaxies is between half and one magnitude. III. The difference in brightness between the brightest and the second brightest galaxy is less than half a magnitude.

The definition of the catalog according to Hickson is:

Most compact groups contain a high fraction of galaxies having morphological or kinematical peculiarities, nuclear radio and infrared emission, and starburst or active galactic nuclei (AGN) activity. They contain large quantities of diffuse gas and are dynamically dominated by dark matter. They most likely form as subsystems within looser associations and evolve by gravitational processes. Strong galaxy interactions result and merging is expected to lead to the ultimate demise of the group. Compact groups are surprisingly numerous, and may play a significant role in galaxy evolution.

“Most compact galaxy groups contain high proportions of galaxies with morphological or kinematic irregularities; nuclear radio radiation and infrared emission and strong star formation or active galaxy nuclei ( AGN ). They contain large amounts of diffuse gas and are dynamically dominated by dark matter . They usually form a subsystem within a larger group and develop under the influence of gravity. Strong interactions of the galaxies are the result and mergers of the galaxies are to be expected until the final demise of the group. Compact groups of galaxies are surprisingly common and play an important role in the evolution of galaxies ”.

Further studies of the catalog

Because Hickson's compact groups are the brightest and closest known groups, they have been studied time and again since the 1980s. Particular attention was paid to the environment in which they are located, to their dwarf galaxy population, the high proportion of dark matter and their morphological composition.

In 1992, 99 of the 100 groups were spectroscopically recorded by Hickson in order to measure the speeds and redshift of the individual group members. It turned out, on the one hand, that the speed dispersion of the group members was very low (at around 250 km / s) and, on the other hand, that eight groups only came about through projection effects, without forming a real group.

List of HCG galaxy groups

The catalog is arranged in ascending right ascension. The individual group members are designated with the addition of A, B, C etc.
The Hickson group type means:
S The brightest galaxy is a spiral galaxy.
E The brightest galaxy is an elliptical galaxy.
I - III Difference in the brightness of the two brightest galaxies.

HCG no	Name / description	Object type	Star.	Angular expansion	like	Right asc. ( J2000 )	Decl. (J2000)	Radial speed ( km / s )	Distance ( million years )	image
1	Group type: SIII		Andromeda
1A	UGC 248	Sc		1.25 'x 0.9'	+15.02	00 h 26 m 07.13 s	+ 25 ° 43 ′ 30.7 ″	10237 ± 39	464
1B	PGC 1625	in the		1.43 'x 0.36'	+15.54	00 h 26 m 05.95 s	+ 25 ° 43 ′ 09.6 ″	10266 ± 40	466
1C	PGC 1614	E.		0.36 'x 0.36'	+15.89	00 h 25 m 54.408 s	+ 25 ° 43 ′ 25.16 ″	10056 ± 34	456
1D	PGC 1618	S0		0.28 'x 0.16'	+ 17.40	00 h 25 m 58.81 s	+ 25 ° 43 ′ 30.7 ″	10120 ± 47	459
2	Group type: SII		fishes
2A	UGC 312	SBd		1.4 'x 0.7'	+13.88	00 h 31 m 23.91 s	+ 8 ° 28 ′ 00.6 ″	4364 ± 3	200
2 B	PGC 1914	cI; SBa		0.7 '× 0.5'	+14.48	00 h 31 m 18.852 s	+ 8 ° 28 ′ 29.35 ″	4349 ± 8	200
2C	UGC 314	SBc		1.1 '× 0.9'	+15.00	00 h 31 m 29.37 s	+ 8 ° 24 ′ 02.2 ″	4271 ± 2	196
2D	UGC 315	SBb		0.9 '× 0.9'	+16.74	00 h 31 m 38.32 s	+ 8 ° 23 ′ 26.3 ″	21340 ± 85	958
3	Group type: SII		whale
3A	PGC 2045	Sc		0.89 'x 0.27'	+15.43	00 h 34 m 13.18 s	−7 ° 33 ′ 53.4 ″	7302 ± 51	329
3B	PGC 2064	SB0a		0.51 'x 0.32'	+15.62	00 h 34 m 25.124 s	−7 ° 35 ′ 58.54 ″	7860 ± 45	354
3C	PGC 2059	Sd		0.79 'x 0.21'	+16.75	00 h 34 m 19.98 s	−7 ° 36 ′ 00.5 ″	11545 ± 68	519
3D	PGC 2043	S0		0.44 'x 0.32'	+15.81	00 h 34 m 09.846 s	−7 ° 36 ′ 08.05 ″	7804 ± 30	351
4th	Group type: SI		whale
4A	PGC 2047	(R'_1) SB (r1) bc Sy1.8		1.4 '× 1.0'	+13.96	00 h 34 m 13.821 s	−21 ° 26 ′ 20.58 ″	8048 ± 3	360
4B	PGC 2046	(R ') SB (r) b: pec		1.1 '× 0.4'	+15.56	00 h 34 m 14.05 s	−21 ° 28 ′ 12.0 ″	6983 ± 5	313
4C	PGC 2051	E2		0.43 'x 0.33'	+15.79	00 h 34 m 15.50 s	−21 ° 25 ′ 03.2 ″	18410 ± 14	823
4D	PGC 2057	E4 HII		0.42 'x 0.25'	+15.80	00 h 34 m 16.828 s	−21 ° 28 ′ 39.88 ″	8242 ± 15	369
4E	PGC 2040	Sab		0.43 'x 0.31'	+16.46	00 h 34 m 08.28 s	−21 ° 26 ′ 07.9 ″	18480 ± 180	820
5	Group type: SII		fishes
5A	NGC 190	Sab		0.81 'x 0.81'	+15.08	00 h 38 m 54.680 s	+ 7 ° 03 ′ 45.70 ″	12189 ± 14	549
5B	PGC 2325	E0		0.60 'x 0.58'	+15.99	00 h 38 m 54.730 s	+ 7 ° 03 ′ 24.20 ″	12221 ± 29	551
5C	PGC 2322	S0		0.3 '× 0.3'	+15.67	00 h 38 m 52.780 s	+ 7 ° 03 ′ 22.70 ″	12489 ± 47	563
5D	PGC 2326	Sc		0.41 '× 0.17'	+ 17.30	00 h 38 m 54.900 s	+ 7 ° 02 ′ 53.20 ″	8215 ± 37	372
6th	Group type: EIII		Cetus
6A	PGC 2353	S0?		0.48 'x 0.24'	+15.73	00 h 39 m 13.786 s	−8 ° 23 ′ 39.49 ″	11669 ± 52	524
6B	PGC 2350	Sab		0.71 'x 0.29'	+16.02	00 h 39 m 10.22 s	−8 ° 23 ′ 49.6 ″	11377 ± 61	511
6C	PGC 2351	E?		0.73 'x 0.37'	+15.65	00 h 39 m 11.058 s	−8 ° 23 ′ 59.34 ″	10967 ± 61	493
6D	PGC 2347	Sbc		0.30 'x 0.16'	+17.89	00 h 39 m 07.570 s	−8 ° 24 ′ 03.60 ″	11434 ± 62	513
7th	Group type: SII		whale
7A	NGC 192	(R ') SB (r) a: HII		1.9 'x 0.9'	+12.6	00 h 39 m 13.39 s	+ 0 ° 51 ′ 50.9 ″	4133 ± 2	189
7B	NGC 196	SB0 pec:		1.2 '× 0.8'	+13.6	00 h 39 m 17.84 s	+ 0 ° 54 ′ 45.9 ″	4255 ± 24	194
7C	NGC 201	SAB (r) c		1.75 'x 1.15'	+12.9	00 h 39 m 34.820 s	+ 0 ° 51 ′ 35.60 ″	4415 ± 19	201
7D	NGC 197	SB0 ^ 0 ^ pec		0.95 'x 0.76'	+13.5	00 h 39 m 18.790 s	+ 0 ° 53 ′ 31.00 ″	4121 ± 18	197
8th	Group type: EII		Andromeda
8A	PGC 2886	E5		0.9 '× 0.7'	+15.18	00 h 49 m 34.15 s	+ 23 ° 34 ′ 41.7 ″	16077 ± 35	724
8B	HCG 8B	S0		0.3 '× 0.1'	+16.24	00 h 49 m 35.24 s	+ 23 ° 35 ′ 29.6 ″	15981 ± 31	720
8C	HCG 8C	S?		0.2 'x 0.2'	+16.14	00 h 49 m 35.774 s	+ 23 ° 35 ′ 02.94 ″	17019 ± 29	766
8D	PGC 2892	S0		0.52 'x 0.44'	+16.24	00 h 49 m 36.63 s	+ 23 ° 34 ′ 24.2 ″	16302 ± 30	734
9	Group type: EI		whale
9A	PGC 3201	E2 poss. LINER?		0.7 '× 0.4'	+15.27	00 h 54 m 20.52 s	−23 ° 33 ′ 08.7 ″	20155 ± 12	900
9B	PGC 3196	S0?		0.37 'x 0.26'	+15.78	00 h 54 m 15.96 s	−23 ° 32 ′ 06.9 ″	9406 ± 150	420
9C	PGC 3200	Sc		0.30 'x 0.26'	+16.96	00 h 54 m 19.29 s	−23 ° 34 ′ 06.5 ″	10300 ± 192	460
9D	PGC 3198	SBcd		0.44 'x 0.42'	+16.69	00 h 54 m 17.03 s	−23 ° 33 ′ 09.5 ″	17502 ± 150	782
10	Group type: SIII		Andromeda
10A	NGC 536	SB (r) b AGN		3.0 '× 1.1'	+12.4	01 h 26 m 21.78 s	+ 34 ° 42 ′ 10.9 ″	5189 ± 5	238
10B	NGC 529	E1		2.4 '× 2.1'	+12.2	01 h 25 m 40.40 s	+ 34 ° 42 ′ 48.0 ″	4822 ± 18	222
10C	NGC 531	SB0 / a:		1.9 'x 0.5'	+14.0	01 h 26 m 18.90 s	+ 34 ° 45 ′ 14.0 ″	4660 ± 32	215
10D	NGC 542	Scd		1.0 '× 0.2'	+14.8	01 h 26 m 30.90 s	+ 34 ° 40 ′ 31.0 ″	4662 ± 8	215
11	Group type: SI		whale
11A	PGC 5362	SAB (r) bc		1.9 '× 1.8'	+13.37	01 h 26 m 33.93 s	−23 ° 13 ′ 34.2 ″	5514 ± 8	245
11B	PGC 5365	SBc		0.4 '× 0.2'	+15.79	01 h 26 m 33.78 s	−23 ° 15 ′ 56.2 ″	13295 ± 86	574
11C	PGC 5357	Scd		0.39 '× 0.19'	+17.26	01 h 26 m 29.02 s	−23 ° 11 ′ 36.9 ″	12904 ± 61	576
11D	PGC 5381	SB0		0.32 'x 0.25'	+16.86	01 h 26 m 45.62 s	−23 ° 13 ′ 16.2 ″	9686 ± 61	432
12	Group type: EI		whale
12A	PGC 5437	S0		0.76 'x 0.53'	+14.96	01 h 27 m 33.397 s	−4 ° 40 ′ 58.84 ″	14407 ± 53	642
12B	PGC 5439	SB0		0.62 'x 0.39'	+16.82	01 h 27 m 34.410 s	−4 ° 39 ′ 07.59 ″	14956 ± 38	670
12C	PGC 5445	S0		0.40 'x 0.18'	+17.82	01 h 27 m 37.41 s	−4 ° 39 ′ 40.3 ″	14569 ± 66	653
12D	PGC 5443	Sbc		0.48 'x 0.28'	+18.16	01 h 27 m 37.16 s	−4 ° 40 ′ 07.5 ″	14241 ± 62	638
12E	PGC 5432	S0		0.23 'x 0.15'	+18.25	01 h 27 m 27.850 s	−4 ° 40 ′ 38.70 ″	14469 ± 62	648
13	Group type: EII		whale
13A	PGC 5732	SA (s) b:		1.0 '× 0.5'	+15.55	01 h 32 m 20.49 s	−7 ° 51 ′ 34.4 ″	14469 ± 62	558
13B	PGC 5735	E0 AGN?		0.66 'x 0.60'	+15.97	01 h 32 m 22.31 s	−7 ° 52 ′ 23.5 ″	12100 ± 101	556
13C	PGC 5736	S0		0.36 '× 0.19'	+16.96	01 h 32 m 23.19 s	−7 ° 52 ′ 46.5 ″	12240 ± 105	571
13D	PGC 5728	S0		0.23 '× 0.16'	+17.69	01 h 32 m 19.14 s	−7 ° 53 ′ 45.8 ″	12209 ± 107	547
13E	PGC 5741	S0		0.30 'x 0.17'	+17.82	01 h 32 m 25.99 s	−7 ° 52 ′ 10.3 ″	12593 ± 61	564
14th	Group type: SIII		whale
14A	PGC 7557	SAb pec?		1.1 '× 0.4'	+14.86	01 h 59 m 52.47 s	−7 ° 05 ′ 23.2 ″	5861 ± 19	262
14B	PGC 7553	SA0 ^ 0 ^ pec		1.6 '× 0.6'	+15.26	01 h 59 m 49.87 s	−7 ° 03 ′ 33.4 ″	5365 ± 28	240
14C	PGC 7550	Sbc		0.60 'x 0.24'	+17.68	01 h 59 m 48.70 s	−7 ° 01 ′ 53.2 ″	5145 ± 37	230
14D	PGC 7546	Sd		0.44 'x 0.36'	+16.98	01 h 59 m 43.58 s	−6 ° 58 ′ 57.8 ″	8416 ± 58	377
15th	Group type: EIII		whale
15A	UGC 1624	S0:		1.1 '× 0.5'	+14.73	02 h 07 m 53.08 s	+ 2 ° 10 ′ 03.4 ″	6967 ± 30	313
15B	UGC 1617	S0-:		0.8 '× 0.7'	+15.80	02 h 07 m 34.095 s	+ 2 ° 06 ′ 54.67 ″	7117 ± 36	319
15C	UGC 1620	S0-:		0.8 '× 0.8'	+14.59	02 h 07 m 39.78 s	+ 2 ° 08 ′ 58.8 ″	9687 ± 22	326
15D	UGC 1618	S0-:		0.9 '× 0.8'	+15.28	02 h 07 m 37.493 s	+ 2 ° 10 ′ 50.47 ″	6244 ± 36	281
15E	PGC 8096	S0?		0.3 '× 0.3'	+15.80	02 h 07 m 25.280 s	+ 2 ° 06 ′ 58.00 ″	7197 ± 32	323
15F	PGC 8116	Sbc		0.56 'x 0.33'	+16.73	02 h 07 m 37.79 s	+ 2 ° 11 ′ 25.4 ″	6242 ± 102	280
16	Arp 318 ; Group type: SIII		whale
16A	NGC 835	SAB (r) from: pec LINER		1.3 '× 1.0'	+13.14	02 h 09 m 24.693 s	−10 ° 08 ′ 10.51 ″	4073 ± 10	182
16B	NGC 833	(R ') Sa: pec; Sy2 LINER		1.76 'x 0.67'	+13.5	02 h 09 m 20.877 s	−10 ° 08 ′ 00.31 ″	3864 ± 10	172
16C	NGC 838	SA (rs) 0 ^ 0 pec: Sbrst		1.1 '× 0.9'	+13.5	02 h 09 m 38.581 s	−10 ° 08 ′ 46.27 ″	3851 ± 1	172
16D	NGC 839	Spec sp; LINER Sy2		1.4 'x 0.7'	+14.20	02 h 09 m 42.929 s	−10 ° 11 ′ 02.71 ″	3874 ± 5	173
17th	Group type: EIII		Aries
17A	PGC 8561	E0		0.36 'x 0.34'	+17.15	02 h 14 m 05.12 s	+ 13 ° 18 ′ 39.8 ″	18228 ± 44	817
17B	PGC 8558	E0		0.54 'x 0.43'	+16.5	02 h 14 m 03.846 s	+ 13 ° 18 ′ 47.26 ″	18019 ± 28	808
17C	PGC 8560	S0		0.27 'x 0.20'	+17.76	02 h 14 m 05.02 s	+ 13 ° 19 ′ 02.3 ″	18224 ± 105	817
17D	PGC 8564	S0		0.18 '× 0.18'	+18.0	02 h 14 m 07.587 s	+ 13 ° 18 ′ 23.62 ″	17487 ± 20	784
17E	PGC 8559	S0		0.11 '× 0.09'	+19.55	02 h 14 m 04.21 s	+ 13 ° 19 ′ 08.6 ″	17976 ± 142	806
18th	Arp 258, UGC 2140 ; Group type: SII		Aries
18A	PGC 10046	SB0 / a: sp		0.9 'x 0.2'	+15.48	02 h 39 m 09.410 s	+ 18 ° 22 ′ 03.24 ″	10079 ± 23	453
18B	HCG 18B	in the		1.67 'x 0.89'	+15.57	02 h 39 m 06.00 s	+ 18 ° 23 ′ 05.0 ″	4105 ± 25	186
18C	PGC 10043	in the		0.76 'x 0.46'	+16.10	02 h 39 m 05.96 s	+ 18 ° 23 ′ 18.6 ″	4143 ± 37	186
18D	PGC 10042	in the		0.72 'x 0.61'	+15.59	02 h 39 m 04.72 s	+ 18 ° 23 ′ 38.6 ″	4067 ± 58	185
19th	Group type: EIII		Cetus
19A	PGC 10262	S0- pec:		1.2 '× 0.8'	+14.19	02 h 42 m 38,409 s	−12 ° 25 ′ 17.29 ″	4254 ± 18	189
19B	PGC 10268	(R) SB (r) a pec?		0.9 '× 0.3'	+15.65	02 h 42 m 41.95 s	−12 ° 25 ′ 38.8 ″	4210 ± 25	187
19C	PGC 10270	SBm pec?		1.3 '× 0.7'	+15.44	02 h 42 m 46.832 s	−12 ° 23 ′ 50.90 ″	4253 ± 23	189
19D	PGC 10269	SBb		0.45 'x 0.22'	+17.71	02 h 42 m 42.825 s	−12 ° 26 ′ 50.50 ″	20443 ± 26	191
20th	Group type: SIII		Aries
20A	PGC 10364	S0		0.48 '× 0.18'	+17.43	02 h 44 m 12.07 s	+ 26 ° 05 ′ 57.8 ″	14477 ± 45	650
20B	PGC 10365	E5		0.31 '× 0.17'	+17.46	02 h 44 m 12.55 s	+ 26 ° 06 ′ 34.3 ″	14424 ± 42	648
20C	PGC 10366	E1		0.31 'x 0.28'	+17.36	02 h 44 m 13.62 s	+ 26 ° 06 ′ 20.2 ″	15032 ± 45	675
20D	PGC 10369	S0a		0.25 'x 0.21'	+17.88	02 h 44 m 18.48 s	+ 26 ° 06 ′ 28.9 ″	10561 ± 61	476
20E	PGC 10367	E2		0.18 '× 0.14'	+18.53	02 h 44 m 16.74 s	+ 26 ° 06 ′ 10.3 ″	14312 ± 49	643
20F	PGC 10368	S0a		0.21 'x 0.10'	+19.54	02 h 44 m 17.18 s	+ 26 ° 06 ′ 40.8 ″	14280 ± 62	641
21st	Group type: SIII		Eridanus
21A	NGC 1099	SB (rs) ab; EmLG HII		1.8 'x 0.6'	+14.33	02 h 45 m 18.02 s	−17 ° 42 ′ 30.1 ″	7552 ± 10	335
21B	NGC 1100	SA (r) a LLAGN?		1.7 'x 0.7'	+14.33	02 h 45 m 36.07 s	−17 ° 41 ′ 20.2 ″	7293 ± 25	324
21C	NGC 1098	SA (s) 0-: LLAGN		1.8 '× 1.3'	+14.33	02 h 44 m 53.669 s	−17 ° 39 ′ 32.92 ″	7453 ± 26	331
21D	NGC 1092	E2		0.9 '× 0.8'	+15.64	02 h 45 m 29.567 s	−17 ° 32 ′ 32.17 ″	8835 ± 48	387
21E	NGC 1091	(R ') SAB (rs) a pec?		0.9 '× 0.6'	+15.33	02 h 45 m 22.43 s	−17 ° 31 ′ 59.4 ″	8819 ± 33	392
22nd	Group type: EI		Eridanus
22A	NGC 1199	E3:		2.4 '× 1.9'	+12.37	03 h 03 m 38.40 s	−15 ° 36 ′ 48.6 ″	2570 ± 5	112
22B	NGC 1190	S0 ^ 0 ^: sp		0.9 '× 0.3'	+15.19	03 h 03 m 26.13 s	−15 ° 39 ′ 42.8 ″	2618 ± 27	115
22C	NGC 1189	SB (s) dm:		1.7 'x 1.5'	+15.15	03 h 03 m 24.474 s	−15 ° 37 ′ 24.48 ″	2544 ± 1	111
22D	NGC 1191	SB0-:		0.6 '× 0.5'	+15.28	03 h 03 m 30.85 s	−15 ° 41 ′ 07.0 ″	9268 ± 21	412
22E	NGC 1192	E5		0.7 '× 0.3'	+15.36	03 h 03 m 34.63 s	−15 ° 40 ′ 43.8 ″	9611 ± 14	427
23	Group type: SIII		Eridanus
23A	NGC 1214	SB (rs) 0+?		1.3 '× 0.3'	+14.30	03 h 06 m 56.019 s	−9 ° 32 ′ 39.03 ″	4869 ± 15	216
23B	NGC 1215	(R) SAB (r) a pec		1.5 '× 1.1'	+15.00	03 h 07 m 09.46 s	−9 ° 35 ′ 33.6 ″	4877 ± 11	216
23C	NGC 1216	S0 +? sp		0.8 'x 0.2'	+15.25	03 h 07 m 18.536 s	−9 ° 36 ′ 46.12 ″	5373 ± 12	238
23D	PGC 11673	Sd		0.64 'x 0.51'	+15.02	03 h 06 m 55.34 s	−9 ° 37 ′ 44.10 ″	4467 ± 21	198
23E	PGC 11690	Sm		0.40 'x 0.18'	+17.77	03 h 06 m 10.542 s	−9 ° 34 ′ 37.54 ″	10039 ± 21	447
24	Group type: EII		Eridanus
24A	PGC 12477	S?		0.5 '× 0.4'	+15.72	03 h 20 m 15.163 s	−10 ° 51 ′ 47.14 ″	9248 ± 41	411
24B	PGC 12501	SBa		0.4 '× 0.4'	+15.12	03 h 20 m 22.61 s	−10 ° 52 ′ 01.0 ″	9137 ± 44	406
24C	PGC 12472	SB0		0.40 'x 0.28'	+17.26	03 h 20 m 12.76 s	−10 ° 51 ′ 47.8 ″	9283 ± 109	412
24D	PGC 12492	S0a		0.22 '× 0.16'	+17.95	03 h 20 m 20.08 s	−10 ° 51 ′ 28.6 ″	8779 ± 61	390
24E	PGC 12489	E0		0.16 '× 0.15'	+18.30	03 h 20 m 17.94 s	−10 ° 52 ′ 01.8 ″	9323 ± 61	414
25th	Group type: SIII		Cetus
25A	UGC 2690	S?		0.5 '× 0.4'	+15.72	03 h 20 m 42.94 s	−1 ° 06 ′ 30.9 ″	6285 ± 30	280
25B	HCG 25B	SBa		0.97 'x 0.64'	+15.15	03 h 20 m 45.41 s	−1 ° 02 ′ 40.9 ″	6331 ± 8	282
25C	PGC 12533	Sb		0.74 'x 0.29'	+16.10	03 h 20 m 43.21 s	−1 ° 00 ′ 08.5 ″	10856 ± 48	486
25D	PGC 12524	S0		0.16 '× 0.11'	+15.8	03 h 20 m 38.550 s	−1 ° 02 ′ 06.20 ″	6322 ± 21	281
25E	PGC 12530	Sdm		0.10 'x 0.09'	+18.6	03 h 20 m 42.620 s	−1 ° 00 ′ 22.84 ″	11065 ± 19	493
25F	PGC 12538	S0		0.70 'x 0.34'	+15.9	03 h 20 m 45.330 s	−1 ° 03 ′ 14.30 ″	6244 ± 18	278
25G	PGC 12550	S0		0.34 'x 0.24'	+16.7	03 h 20 m 52.120 s	−1 ° 03 ′ 47.60 ″	12236 ± 21	545
26th	Group type: SII		Eridanus
26A	PGC 12610	Sc		0.90 'x 0.11'	+17.34	03 h 21 m 55.28 s	−13 ° 39 ′ 00.5 ″	9678 ± 50	430
26B	PGC 12614	E0		0.65 'x 0.32'	+16.42	03 h 21 m 56.95 s	−13 ° 38 ′ 52.3 ″	9332 ± 39	414
26C	PGC 12604	S0		0.32 '× 0.15'	+17.61	03 h 21 m 49.41 s	−13 ° 38 ′ 41.5 ″	9618 ± 62	427
26D	PGC 12613	cI		0.19 '× 0.17'	+16.94	03 h 21 m 56.51 s	−13 ° 38 ′ 42.2 ″	9133 ± 62	405
26E	PGC 12605	in the		0.35 '× 0.12'	+18.34	03 h 21 m 51.13 s	−13 ° 39 ′ 48.0 ″	9623 ± 50	427
26F	PGC 12615	cI		0.18 '× 0.12'	+18.93	03 h 21 m 57.55 s	−13 ° 39 ′ 46.5 ″	9626 ± 46	428
26G	HCG 26G	S0		0.20 'x 0.17'	+18.48	03 h 21 m 55.23 s	−13 ° 38 ′ 54.1 ″	9293 ± 62	412
27	Group type: SIII		Eridanus
27A	PGC 14873	Sb		0.52 'x 0.20'	+17.01	04 h 19 m 27.03 s	−11 ° 43 ′ 59.6 ″	18340 ± 62	815
27B	PGC 14863	SBc		0.46 'x 0.28'	+16.44	04 h 19 m 18.65 s	−11 ° 42 ′ 05.6 ″	18530 ± 61	823
27C	PGC 14870	Sat		0.37 'x 0.27'	+17.50	04 h 19 m 23.88 s	−11 ° 43 ′ 22.6 ″	26352 ± 62	1173
27D	PGC 14861	S0a		0.28 'x 0.15'	+18.02	04 h 19 m 15.40 s	−11 ° 41 ′ 28.3 ″	26256 ± 62	1168
27E	HCG 27E	S0		0.24 'x 0.14'	+18.74	04 h 19 m 21.57 s	−11 ° 42 ′ 39.4 ″	26044 ± 115	1158
27F	HCG 27F	S0		0.17 '× 0.13'	+19.46	04 h 19 m 18.17 s	−11 ° 41 ′ 35.2 ″
28	Group type: SI		Eridanus
28A	PGC 15136	Sb		0.86 '× 0.19'	+16.17	04 h 27 m 18.60 s	−10 ° 18 ′ 22.7 ″	11441 ± 26	507
28B	PGC 15141	E5		0.71 'x 0.37'	+15.92	04 h 27 m 19.955 s	−10 ° 19 ′ 34.45 ″	11489 ± 23	509
28C	PGC 15135	S0		0.36 'x 0.22'	+16.50	04 h 27 m 18.14 s	−10 ° 19 ′ 05.1 ″	11290 ± 26	500
28D	PGC 15139	Sdm		0.19 '× 0.19'	+18.42	04 h 27 m 19.24 s	−10 ° 19 ′ 32.8 ″	30205 ± 63	1345
29	Group type: SII		Eridanus
29A	PGC 15559	cI		0.31 'x 0.23'	+15.10	04 h 34 m 43.31 s	−30 ° 32 ′ 38.7 ″	13328 ± 46	589
29B	HCG 29B	S0		0.33 '× 0.19'	+18.66	04 h 34 m 44.48 s	−30 ° 32 ′ 34.3 ″	30824 ± 64	1370
29C	HCG 29C	E2		0.27 'x 0.21'	+18.25	04 h 34 m 45.69 s	−30 ° 32 ′ 30.5 ″	31669 ± 64	1408
29D	HCG 29D	SB0		0.17 '× 0.17'	+18.90	04 h 34 m 47.220 s	−30 ° 32 ′ 34.40 ″	31714 ± 63	1410
30th	Group type: SIII		Eridanus
30A	PGC 15620	(R ') SB (rs) 0+:		1.2 '× 0.8'	+13.65	04 h 36 m 18.63 s	−2 ° 49 ′ 53.0 ″	4697 ± 20	206
30B	PGC 15631	(R ') SAB (rs) 0+:		1.1 '× 0.9'	+14.19	04 h 36 m 30.26 s	−2 ° 51 ′ 59.0 ″	4617	203
30C	PGC 15624	SBbc		0.58 'x 0.42'	+15.73	04 h 36 m 23.37 s	−2 ° 47 ′ 59.9 ″	4508 ± 38	198
30D	PGC 15636	S0		0.58 'x 0.42'	+16.76	04 h 36 m 36.59 s	−2 ° 50 ′ 35.2 ″	4666 ± 49	211
31	Group type: SII		Eridanus
31A	NGC 1741A	Sdm HII		1.08 'x 0.66'	+15.62	05 h 01 m 38.670 s	−4 ° 15 ′ 33.60 ″	4074 ± 1	178
31B	NGC 1741B	SB (s) m pec sp HII		0.87 'x 0.46'	+15.21	05 h 01 m 35.250 s	−4 ° 15 ′ 51.60 ″	4136 ± 2	181
31C	PGC 16573	SB (s) m pec: HII		0.61 'x 0.23'	+13.30	05 h 01 m 37.760 s	−4 ° 15 ′ 28.40 ″	4019 ± 0	175
31D	PGC 16571	Sbc		0.18 '× 0.15'	+18.53	05 h 01 m 35.44 s	−4 ° 15 ′ 24.2 ″	26900 ± 65	1197
31E	HCG 31E	Sdm HII			+17.7	05 h 01 m 37.49 s	−4 ° 15 ′ 57.2 ″	4009 ± 14	175
31F	HCG 31F	in the			+16.9	05 h 01 m 40.02 s	−4 ° 16 ′ 22.4 ″	3968	173
31G	IC 399	IAB (s) m pec: HII		0.6 '× 0.3'	+15.0	05 h 01 m 44.010 s	−4 ° 17 ′ 19.50 ″	3991 ± 38	174
32	Group type: EI		Lepus
32A	PGC 16583	E.		0.63 'x 0.51'	+14.40	05 h 01 m 45.22 s	−15 ° 26 ′ 55.5 ″	12547 ± 38	555
32B	PGC 16578	S0		0.54 'x 0.22'	+15.90	05 h 01 m 40.103 s	−15 ° 23 ′ 54.43 ″	12125 ± 57	536
32C	PGC 16587	S0a		0.46 'x 0.29'	+17.12	05 h 01 m 48.619 s	−15 ° 25 ′ 50.36 ″	11984 ± 49	532
32D	PGC 16584	S0		0.46 'x 0.24'	+17.59	05 h 01 m 45.37 s	−15 ° 25 ′ 50.4 ″	12313 ± 52	542
33	Group type: EIII		Taurus
33A	PGC 16867	E1		0.37 'x 0.34'	+16.89	05 h 10 m 47.617 s	+ 18 ° 01 ′ 10.81 ″	7464 ± 21	332
33B	PGC 16866	E4		0.53 'x 0.33'	+16.94	05 h 10 m 47.14 s	+ 18 ° 01 ′ 49.0 ″	7858 ± 15	349
33C	PGC 16863	Sd		0.78 'x 0.22'	+18.06	05 h 10 m 44.70 s	+ 18 ° 01 ′ 12.0 ″	7823 ± 47	348
33D	PGC 16871	E0		0.24 'x 0.24'	+18.42	05 h 10 m 53.15 s	+ 18 ° 02 ′ 01.0 ″	7767 ± 37	346
34	Arp 327 ; Group type: EI		Orion
34A	NGC 1875	E2 AGN?		1.6 '× 0.4'	+14.57	05 h 21 m 45.76 s	+ 6 ° 41 ′ 19.9 ″	8994 ± 30	398
34B	PGC 17176	SA0-:		0.28 'x 0.12'	+17.41	05 h 21 m 49.79 s	+ 6 ° 40 ′ 37.3 ″	9620 ± 40	426
34C	PGC 17175	SBd:		0.37 '× 0.19'	+17.10	05 h 21 m 48.88 s	+ 6 ° 40 ′ 55.4 ″	9392 ± 40	416
34D	PGC 17173	S0		0.15 'x 0.10'	+18.29	05 h 21 m 47.69 s	+ 6 ° 41 ′ 02.0 ″	8817 ± 66	391
35	Group type: SIII		Lynx
35A	PGC 24601	S0		0.17 '× 0.13'	+16.5	08 h 45 m 21.250 s	+ 44 ° 31 ′ 14.1 ″	15919 ± 38	711
35B	PGC 24597	E.		0.53 'x 0.46'	+15.48	08 h 45 m 20.627 s	+ 44 ° 30 ′ 33.08 ″	16338 ± 32	730
35C	PGC 24596	E.		0.35 'x 0.30'	+16.04	08 h 45 m 18.456 s	+ 44 ° 31 ′ 40.00 ″	16249 ± 250	726
35D	PGC 24599	Sb		0.51 '× 0.19'	+16.6	08 h 45 m 20.710 s	+ 44 ° 32 ′ 23.10 ″	15798 ± 40	706
35E	PGC 24598	S0		0.24 'x 0.14'	+17.4	08 h 45 m 20.750 s	+ 44 ° 30 ′ 12.00 ″	16711 ± 53	747
35F	PGC 24600	E1		0.14 '× 0.12'	+18.71	08 h 45 m 20.898 s	+ 44 ° 32 ′ 00.36 ″	16330 ± 62	730
36	Group type: SI		Cancer
36A	IC 528	SBab		1.5 'x 0.8'	+15.0	09 h 09 m 22.55 s	+ 15 ° 47 ′ 46.0 ″	3808 ± 29	166
36B	PGC 25791	Sc		0.48 '× 0.17'	+16.86	09 h 09 m 26.40 s	+ 15 ° 48 ′ 18.0 ″	6333 ± 41	691
36C	PGC 25779	Scd		0.31 'x 0.22'	+17.61	09 h 09 m 20.33 s	+ 15 ° 48 ′ 21.2 ″	8635 ± 45	381
36D	PGC 25782	Sbc		0.50 '× 0.14'	+17.85	09 h 09 m 22.19 s	+ 15 ° 46 ′ 46.0 ″	15668 ± 62	695
37	Group type: EII		cancer
37A	NGC 2783A	S0 ^ + ^: dLINER		2.04 'x 0.98'	+13.4	09 h 13 m 39.465 s	+ 29 ° 59 ′ 34.69 ″	6745 ± 20	299
37B	NGC 2783B	Sbc LINER		1.88 'x 0.28'	+15.0	09 h 13 m 33.150 s	+ 30 ° 00 ′ 00.50 ″	6758 ± 23	300
37C	PGC 26004	S0a LLAGN?		0.3 'x 0.2'	+15.37	09 h 13 m 37.340 s	+ 29 ° 59 ′ 58.30 ″	7356 ± 37	326
37D	PGC 26009	SBdm		0.40 'x 0.32'	+16.37	09 h 13 m 33.80 s	+ 30 ° 00 ′ 56.8 ″	6131 ± 17	272
37E	PGC 26005	E0		0.36 'x 0.35'	+16.5	09 h 13 m 34.020 s	+ 30 ° 02 ′ 23.40 ″	6469 ± 18	287
38	Group type: SIII		Leo
38A	PGC 26831	Sbc HII		0.8 'x 0.2'	+15.99	09 h 27 m 34.57 s	+ 12 ° 16 ′ 06.4 ″	8629 ± 8	380
38B	PGC 26842	SBd HII		1.0 '× 0.59'	+15.29	09 h 27 m 43.60 s	+ 12 ° 17 ′ 15.0 ″	8644 ± 33	381
38C	PGC 26844	In the HII		0.4 '× 0.2'	+15.95	09 h 27 m 44.50 s	+ 12 ° 17 ′ 16.4 ″	8770 ± 89	387
38D	PGC 26830	SBa		0.44 '× 0.18'	+ 17.30	09 h 27 m 34.23 s	+ 12 ° 18 ′ 05.6 ″	24282 ± 62	1079
39	UGC 5057; Group type: EII		Hydra
39A	PGC 26926	Sb		0.35 'x 0.27'	+17.42	09 h 29 m 27.71 s	−1 ° 20 ′ 44.6 ″	21119 ± 52	936
39B	PGC 26929	S0		0.26 '× 0.19'	+17.63	09 h 29 m 28.47 s	−1 ° 20 ′ 58.1 ″	21176 ± 61	939
39C	PGC 26931	Sc		0.26 'x 0.18'	+17.57	09 h 29 m 29.359 s	−1 ° 21 ′ 09.25 ″	20667 ± 35	916
39D	PGC 26925	S0		0.23 '× 0.16'	+17.87	09 h 29 m 27.13 s	−1 ° 20 ′ 22.2 ″	21048 ± 37	933
40	Arp 321 ; Group type: EII		Hydra
40A	PGC 27509	E1		1.3 '× 1.0'	+13.77	09 h 38 m 53.554 s	−4 ° 50 ′ 57.36 ″	6628 ± 27	289
40B	PGC 27513	SA (r:) 0- pec		1.1 '× 0.7'	+15.02	09 h 38 m 55.063 s	−4 ° 51 ′ 57.16 ″	6842 ± 27	298
40C	PGC 27508	SB (rs) b pec sp HII		1.1 '× 0.3'	+15.68	09 h 38 m 53.61 s	−4 ° 51 ′ 36.6 ″	6406 ± 6	278
40D	PGC 27516	SB (s) 0 / a pec HII		0.9 '× 0.4'	+15.06	09 h 38 m 55.76 s	−4 ° 50 ′ 13.5 ″	6492 ± 21	282
40E	PGC 27515	SAB (s:) a pec HII?		0.7 '× 0.3'	+17.36	09 h 38 m 55.439 s	−4 ° 51 ′ 30.11 ″	6633 ± 23	289
41	Group type: SI		Big Bear
41A	UGC 5345	Sab		1.36 'x 0.38'	+14.2	09 h 57 m 35.628 s	+ 45 ° 13 ′ 47.27 ″	3751 ± 27	168
41B	UGC 5346	Sab		1.22 'x 0.38'	+15.1	09 h 57 m 40.910 s	+ 45 ° 15 ′ 31.28 ″	7268 ± 28	325
41C	PGC 28753	Sb		0.4 '× 0.1'	+16.49	09 h 57 m 27.43 s	+ 45 ° 14 ′ 20.1 ″	9717 ± 40	435
41D	PGC 28784	S0		0.29 'x 0.16'	+17.5	09 h 57 m 50.560 s	+ 45 ° 13 ′ 43.20 ″	21676 ± 50	951
42	Group type: EI		Water snake
42A	NGC 3091	E3:		3.0 'x 1.9'	+12.13	10 h 00 m 14.290 s	−19 ° 38 ′ 13.06 ″	3964 ± 10	168
42B	NGC 3096	SB ^ -		1.0 '× 0.8'	+14.35	10 h 00 m 33.11 s	−19 ° 39 ′ 43.1 ″	4228 ± 18	180
42C	PGC 28922	E.		0.4 '× 0.4'	+14.24	10 h 00 m 10.29 s	−19 ° 37 ′ 18.5 ″	4005 ± 31	170
42D	PGC 28926	S0?		0.44 'x 0.36'	+16.21	10 h 00 m 12.984 s	−19 ° 40 ′ 22.86 ″	4042 ± 30	171
43	Group type: SII		sextant
43A	PGC 29677	Sb		0.7 'x 0.27'	+15.80	10 h 11 m 19.870 s	−0 ° 01 ′ 22.50 ″	10163 ± 38	439
43B	PGC 29657	SBcd		1.01 '× 0.18'	+16.11	10 h 11 m 07.520 s	−0 ° 02 ′ 31.90 ″	10087 ± 35	444
43C	PGC 29665	SB0		0.50 'x 0.28'	+16.10	10 h 11 m 12.665 s	−0 ° 04 ′ 03.28 ″	9916 ± 33	436
43D	PGC 29666	Sc		0.30 'x 0.27'	+17.35	10 h 11 m 12.9990 s	−0 ° 05 ′ 13,590 ″	9630 ± 37	423
43E	PGC 29668	S0		0.27 'x 0.25'	+ 17.80	10 h 11 m 14.31 s	−0 ° 03 ′ 04.8 ″	9636 ± 68	424
43F	PGC 29673	Sbc		0.71 'x 0.20'	+18.63	10 h 11 m 18.670 s	−0 ° 00 ′ 29.60 ″	19505 ± 64	865
44	Group type: SII		lion
44A	NGC 3190	SA (s) a pec sp LINER		4.4 'x 1.5'	+12.12	10 h 18 m 05.64 s	+ 21 ° 49 ′ 55.0 ″	1271 ± 14	53
44B	NGC 3193	E2 LINER		3.0 '× 2.7'	+11.83	10 h 18 m 24.90 s	+ 21 ° 53 ′ 38.3 ″	1399 ± 14	58
44C	NGC 3185	(R) SB (r) a Sy2		2.3 '× 1.6'	+12.99	10 h 17 m 38.57 s	+ 21 ° 41 ′ 17.7 ″	1217 ± 1	51
44D	NGC 3187	SB (s) c pec HII		3.0 '× 1.3'	+13.91	10 h 17 m 47.84 s	+ 21 ° 52 ′ 23.8 ″	1521 ± 8	67
45	Group type: SI		Big Bear
45A	UGC 5564	Sb (f)		1.21 'x 0.39'	+15.4	10 h 19 m 13.760 s	+ 59 ° 07 ′ 51.90 ″	21811 ± 34	977
45B	PGC 30137	S0a		0.55 'x 0.31'	+16.3	10 h 19 m 05.320 s	+ 59 ° 06 ′ 19.90 ″	22195 ± 29	994
45C	PGC 30143	Sc		0.16 'x 0.10'	+18.5	10 h 19 m 07.770 s	+ 59 ° 05 ′ 04.30 ″	21781 ± 49	976
45D	PGC 30156	S0		0.28 'x 0.17'	+17.81	10 h 19 m 16.16 s	+ 59 ° 08 ′ 15.0 ″	20735 ± 43	929
46	Group type: EIII		lion
46A	HCG 46A	E3		0.36 'x 0.27'	+16.83	10 h 22 m 07.111 s	+ 17 ° 50 ′ 16.71 ″	8201 ± 35	363
46B	PGC 30350	S0		0.32 'x 0.26'	+16.95	10 h 22 m 12.87 s	+ 17 ° 51 ′ 13.6 ″	8571 ± 36	379
46C	PGC 30349	E1		0.26 'x 0.23'	+16.81	10 h 22 m 12.596 s	+ 17 ° 51 ′ 34.16 ″	7906 ± 42	349
46D	PGC 30354	SB0		0.42 'x 0.25'	+16.81	10 h 22 m 17.202 s	+ 17 ° 52 ′ 53.96 ″	7703 ± 33	340
47	Group type: SI		lion
47A	UGC 5644	SA (r):		1.12 'x 0.59'	+14.4	10 h 25 m 46.260 s	+ 13 ° 43 ′ 00.70 ″	9692 ± 19	428
47B	PGC 30619	E3		0.61 'x 0.54'	+15.2	10 h 25 m 48,600 s	+ 13 ° 43 ′ 40.60 ″	9487 ± 32	419
47C	PGC 30620	Sc		0.40 'x 0.33'	+16.4	10 h 25 m 49,000 s	+ 13 ° 45 ′ 11.40 ″	9553 ± 31	422
47D	PGC 30618	Sd		0.54 'x 0.45'	+16.0	10 h 25 m 47.750 s	+ 13 ° 44 ′ 56.90 ″	9489 ± 47	419
48	Group type: EI		Water snake
48A	IC 2597	E + 4		2.6 '× 1.8'	+12.84	10 h 37 m 47.452 s	−27 ° 04 ′ 54.10 ″	2267 ± 12	92
48B	PGC 31588	Sc HII		0.9 '× 0.8'	+14.97	10 h 37 m 49.504 s	−27 ° 07 ′ 17.98 ″	2437 ± 11	100
48C	PGC 31577	S0a		0.51 'x 0.23'	+16.37	10 h 37 m 40.54 s	−27 ° 03 ′ 28.7 ″	4381 ± 24	186
48D	PGC 31580	E1		0.29 'x 0.25'	+17.48	10 h 37 m 41.450 s	−27 ° 02 ′ 40.34 ″	4361 ± 17	186
49	Group type: EII		Big Bear
49A	HCG 49A	Scd		0.48 'x 0.44'	+16.32	10 h 56 m 41.61 s	+ 67 ° 11 ′ 05.1 ″	9937 ± 17	449
49B	PGC 32895	Sd; BlueCG HII		0.46 'x 0.21'	+16.4	10 h 56 m 39.166 s	+ 67 ° 10 ′ 48.97 ″	9931 ± 9	448
49C	PGC 32893	in the		0.34 'x 0.26'	+17.67	10 h 56 m 36.69 s	+ 67 ° 10 ′ 52.4 ″	9926 ± 60	448
49D	PGC 32890	E5		0.34 'x 0.22'	+17.33	10 h 56 m 33.47 s	+ 67 ° 10 ′ 41.1 ″	10010 ± 72	452
50	Group type: EII		Big Bear
50A	PGC 34447	E0		0.20 'x 0.19'	+19.08	11 h 17 m 6.40 s	+ 54 ° 55 ′ 01.7 ″	41870 ± 118	1873
50B	PGC 34452	SB0		0.27 'x 0.15'	+19.15	11 h 17 m 08.26 s	+ 54 ° 55 ′ 02.7 ″	41170 ± 111	1842
50C	PGC 34444	S0		0.19 '× 0.17'	+18.4	11 h 17 m 04.050 s	+ 54 ° 55 ′ 15.50 ″	41346 ± 42	1849
50D	PGC 34448	S0		0.24 'x 0.14'	+19.83	11 h 17 m 06.51 s	+ 54 ° 55 ′ 25.0 ″	42546 ± 62	1903
50E	PGC 34453	S0		0.14 'x 0.10'	+20.32	11 h 17 m 08.70 s	+ 54 ° 55 ′ 14.0 ″	41650 ± 62	1863
51	Group type: EII		lion
51A	NGC 3651-1	E.		1.33 'x 1.23'	+14.49	11 h 22 m 26.35 s	+ 24 ° 17 ′ 56.9 ″	7626 ± 25	339
51B	PGC 34882	Sbc AGN		0.8 '× 0.6'	+15.55	11 h 22 m 14.21 s	+ 24 ° 18 ′ 00.9 ″	8219 ± 47	365
51C	NGC 3653	S0		0.9 '× 0.6'	+14.59	11 h 22 m 30.060 s	+ 24 ° 16 ′ 45.08 ″	8902 ± 20	396
51D	PGC 34907	S?		0.3 '× 0.3'	+15.67	11 h 22 m 30.538 s	+ 24 ° 17 ′ 59.36 ″	7529 ± 32	334
51E	IC 2759	E2		0.3 '× 0.3'	+15.09	11 h 22 m 13.271 s	+ 24 ° 19 ′ 01.43 ″	7700 ± 23	342
51F	NGC 3651-2	S0		0.57 'x 0.28'	+15.23	11 h 22 m 26.38 s	+ 24 ° 17 ′ 43.6 ″	7532 ± 30	334
51G	PGC 34901	cI		0.23 '× 0.19'	+16.20	11 h 22 m 28.36 s	+ 24 ° 17 ′ 41.8 ″	7532 ± 41	334
52	Group type: SI		lion
52A	PGC 35183	SB?		0.7 '× 0.3'	+15.40	11 h 26 m 18.73 s	+ 21 ° 05 ′ 46.6 ″	12895 ± 33	563
52B	PGC 35179	Sc		0.70 '× 0.16'	+16.83	11 h 26 m 16.53 s	+ 21 ° 06 ′ 26.1 ″	13040 ± 73	580
52C	PGC 35184	Scd		0.79 'x 0.26'	+16.68	11 h 26 m 19.08 s	+ 21 ° 03 ′ 17.8 ″	12630 ± 61	562
52D	PGC 35178	Sdm		0.27 'x 0.20'	+17.70	11 h 26 m 16.11 s	+ 21 ° 05 ′ 17.7 ″	6293 ± 65	279
53	Group type: SI		lion
53A	NGC 3697	SABb AGN		2.3 'x 0.7'	+13.77	11 h 28 m 50.38 s	+ 20 ° 47 ′ 42.3 ″	6261 ± 31	277
53B	NGC 3697C	S0		0.82 'x 0.48'	+15.11	11 h 28 m 59.867 s	+ 20 ° 44 ′ 20.87 ″	6335 ± 25	281
53C	NGC 3697B	SBd		0.7 '× 0.5'	+15.11	11 h 28 m 58.510 s	+ 20 ° 44 ′ 59.10 ″	6249 ± 17	277
53D	PGC 35381	Sc		0.49 'x 0.27'	+16.78	11 h 29 m 14.59 s	+ 20 ° 46 ′ 23.4 ″	9070	278
54	IC 700 ; Group type: EII		lion
54A	PGC 35382	Sdm		0.39 'x 0.39'	+14.16	11 h 29 m 15.29 s	+ 20 ° 34 ′ 59.2 ″	1413 ± 19	61
54B	PGC 35380	in the		0.19 '× 0.13'	+16.24	11 h 29 m 14.30 s	+ 20 ° 34 ′ 51.0 ″	1412 ± 33	61
54C	PGC 35384	in the		0.16 '× 0.15'	+17.05	11 h 29 m 16.44 s	+ 20 ° 35 ′ 07.5 ″	1420 ± 35	61
54D	PGC 35385	in the		0.18 'x 0.08'	+18.26	11 h 29 m 16.70 s	+ 20 ° 35 ′ 16.3 ″	1670 ± 50	72
55	Arp 329 ; UGC 6514 group type: EIII		Draco
55A	PGC 35575	SA0 pec:		0.44 'x 0.43'	+15.93	11 h 32 m 06.96 s	+ 70 ° 48 ′ 55.7 ″	16070 ± 60	723
55B	PGC 35572	E pec:		0.26 'x 0.23'	+16.88	11 h 32 m 05.64 s	+ 70 ° 48 ′ 23.6 ″	15690 ± 100	706
55C	PGC 35573	SBa pec:		0.57 'x 0.38'	+17.43	11 h 32 m 05.690 s	+ 70 ° 48 ′ 38.70 ″	15480 ± 100	697
55D	PGC 35574	S0 pec:		0.27 'x 0.22'	+17.63	11 h 32 m 06.79 s	+ 70 ° 49 ′ 16.4 ″	16070 ± 100	723
55E	PGC 35576	S; N galaxy		0.22 'x 0.17'	+18.03	11 h 32 m 07.44 s	+ 70 ° 49 ′ 07.4 ″	36880 ± 100	1652
56	Arp 322 ; UGC 6527 group type: SIII		Big Bear
56A	PGC 35631	Sc HII		1.15 '× 0.19'	+15.9	11 h 32 m 46.700 s	+ 52 ° 56 ′ 27.20 ″	8205 ± 32	369
56B	VV150a	SB0; Sy1 Sy2		0.65 'x 0.36'	+14.8	11 h 32 m 40.268 s	+ 52 ° 57 ′ 01.26 ″	7919 ± 38	357
56C	PGC 35618	(R ') S0 / A pec: Sy2		0.61 'x 0.47'	+15.82	11 h 32 m 36.710 s	+ 52 ° 56 ′ 51.80 ″	8110 ± 28	365
56D	PGC 35615	SA (s) 0 / a pec: Sy2		0.42 'x 0.26'	+17.01	11 h 32 m 35.51 s	+ 52 ° 56 ′ 48.8 ″	8346 ± 56	376
56E	PGC 35609	SB0 pec: HII?		0.44 'x 0.31'	+16.1	11 h 32 m 32.760 s	+ 52 ° 56 ′ 21.79 ″	7988 ± 30	360
57	Arp 320 ; Group type: SII		lion
57A	NGC 3753	Sb AGN		1.7 '× 0.5'	+14.52	11 h 37 m 53.90 s	+ 21 ° 58 ′ 53.0 ″	8727 ± 31	388
57B	NGC 3746	SB (r) b		1.1 '× 0.5'	+15.01	11 h 37 m 43.60 s	+ 22 ° 00 ′ 34.0 ″	9022 ± 20	401
57C	NGC 3750	SAB0-?		0.8 '× 0.7'	+14.91	11 h 37 m 51.632 s	+ 21 ° 58 ′ 26.98 ″	9081 ± 36	404
57D	NGC 3754	SBc		0.4 '× 0.3'	+15.06	11 h 37 m 55.00 s	+ 21 ° 59 ′ 08.0 ″	8977 ± 41	399
57E	NGC 3748	SB0 ^ 0 ^? sp		0.7 '× 0.4'	+15.77	11 h 37 m 49.10 s	+ 22 ° 01 ′ 33.0 ″	8816 ± 19	392
57F	NGC 3751	E4		0.69 'x 0.40'	+15.23	11 h 37 m 53.90 s	+ 21 ° 56 ′ 10.0 ″	9394 ± 39	418
57G	NGC 3745	SB (s) 0-:		0.4 '× 0.2'	+16.18	11 h 37 m 44.50 s	+ 22 ° 01 ′ 16.0 ″	9463 ± 23	421
57H	PGC 36010	SBb		0.33 'x 0.28'	+17.38	11 h 37 m 50.50 s	+ 22 ° 00 ′ 45.0 ″	9240 ± 105	411
58	Group type: SIII		Virgin
58A	NGC 3822	Sb Sy2		1.4 '× 0.8'	+14.14	11 h 42 m 11.09 s	+ 10 ° 16 ′ 39.9 ″	6138 ± 20	276
58B	NGC 3825	SBa		1.68 'x 0.96'	+13.6	11 h 42 m 23.730 s	+ 10 ° 15 ′ 50.90 ″	6503 ± 17	287
58C	NGC 3817	SB0 / a		1.09 'x 0.84'	+14.0	11 h 41 m 52.940 s	+ 10 ° 18 ′ 15.80 ″	6103 ± 19	269
58D	NGC 3819	E1		0.91 'x 0.73'	+14.4	11 h 42 m 05.868 s	+ 10 ° 21 ′ 03.58 ″	6274 ± 11	276
58E	NGC 3820	Sbc		0.65 'x 0.50'	+15.1	11 h 42 m 04.910 s	+ 10 ° 23 ′ 03.30 ″	6102 ± 33	269
59	Group type: EIII		lion
59A	IC 737	Sat		0.59 'x 0.54'	+14.82	11 h 48 m 27.53 s	+ 12 ° 43 ′ 38.3 ″	4109 ± 31	180
59B	IC 736	E0		0.5 '× 0.5'	+15.60	11 h 48 m 20.116 s	+ 12 ° 42 ′ 59.46 ″	4004 ± 26	175
59C	PGC 36871	Sc		0.90 'x 0.29'	+15.9	11 h 48 m 32.450 s	+ 12 ° 42 ′ 19.10 ″	4394 ± 26	193
59D	PGC 36867	in the		0.69 'x 0.43'	+16.0	11 h 48 m 30.660 s	+ 12 ° 43 ′ 47.30 ″	3635 ± 35	159
59E	PGC 36851	Scd		0.45 'x 0.24'	+17.0	11 h 48 m 19.410 s	+ 12 ° 45 ′ 27.10 ″	24213 ± 20	108
60	Group type: EII		Big Bear
60A	PGC 38065	E2		0.58 'x 0.45'	+15.76	12 h 03 m 07.065 s	+ 51 ° 40 ′ 30.32 ″	19007 ± 46	852
60B	PGC 38053	E4		0.38 'x 0.21'	+17.5	12 h 02 m 56.530 s	+ 51 ° 41 ′ 42.00 ″	18396 ± 53	824
60C	PGC 38064	SBc		0.37 'x 0.26'	+17.39	12 h 03 m 06.88 s	+ 51 ° 41 ′ 07.7 ″	19277 ± 180	864
60D	HCG 60D	S0		0.34 'x 0.28'	+16.9	12 h 03 m 09.620 s	+ 51 ° 40 ′ 41.40 ″	18223 ± 47	817
61	Group type: EIII		Berenike's hair
61A	NGC 4169	S0 / a Sy2		1.8 'x 0.9'	+13.15	12 h 12 m 18.80 s	+ 29 ° 10 ′ 45.5 ″	3784 ± 18	169
61B	NGC 4173	Sdm		5.04 'x 0.69'	+13.59	12 h 12 m 21.42 s	+ 29 ° 12 ′ 25.0 ″	1127 ± 20	50
61C	NGC 4175	Sbc HII		1.8 'x 0.4'	+14.17	12 h 12 m 31.049 s	+ 29 ° 10 ′ 06.44 ″	4012 ± 7	179
61D	NGC 4174	S0		0.8 '× 0.3'	+14.31	12 h 12 m 26.91 s	+ 29 ° 08 ′ 57.2 ″	4045 ± 19	180
62	Group type: EIII		Virgin
62A	NGC 4759B	S0 +; BrClG		0.7 '× 0.5'	+13.47	12 h 53 m 05.69 s	−9 ° 12 ′ 14.4 ″	4259 ± 10	185
62B	NGC 4759A	S0 ^ 0 ^ pec		2.6 '× 2.0'	+14.04	12 h 53 m 04.460 s	−9 ° 11 ′ 59.70 ″	3561 ± 18	154
62C	NGC 4761	E +		0.4 '× 0.3'	+14.86	12 h 53 m 09.945 s	−9 ° 11 ′ 54.74 ″	4432 ± 17	193
62D	NGC 4764	S?		0.66 'x 0.56'	+15.98	12 h 53 m 06.63 s	−9 ° 15 ′ 27.5 ″	4174 ± 33	182
63	Group type: SIII		Centaurus
63A	PGC 44984	(R'_1) SB (s) a HII		1.1 '× 0.5'	+14.89	13 h 02 m 17.41 s	−32 ° 45 ′ 43.7 ″	4905 ± 11	212
63B	PGC 44965	SB (r) bc		1.2 '× 1.1'	+14.33	13 h 02 m 07.05 s	−32 ° 47 ′ 13.8 ″	4905 ± 11	410
63C	PGC 44979	SBc		0.55 '× 0.50'	+15.52	13 h 02 m 12.84 s	−32 ° 46 ′ 00.9 ″	9460 ± 112	423
63D	PGC 44959	Sc		0.30 'x 0.22'	+17.51	13 h 02 m 04.28 s	−32 ° 46 ′ 30.5 ″	9141 ± 133	476
64	Group type: SII		Virgin
64A	PGC 46975	SBc		1.1 '× 0.5'	+15.35	13 h 25 m 45.20 s	−3 ° 51 ′ 51.6 ″	10596 ± 46	470
64B	PGC 46972	Scd		0.90 'x 0.51'	+16.74	13 h 25 m 43.012 s	−3 ° 51 ′ 10.34 ″	10672 ± 12	473
64C	PGC 46977	Sd		0.69 'x 0.57'	+15.28	13 h 25 m 40.071 s	−3 ° 48 ′ 57.25 ″	6147 ± 76	268
64D	PGC 46971	S0		0.21 '× 0.14'	+17.98	13 h 25 m 42.100 s	−3 ° 50 ′ 59.80 ″	10720 ± 52	476
65	Group type: EI		Hydra
65A	PGC 47397	E3		1.4 '× 0.8'	+14.35	13 h 29 m 50.926 s	−29 ° 30 ′ 52.66 ″	13735 ± 3	607
65B	PGC 47406	S0?		0.91 'x 0.40'	+15.32	13 h 29 m 54.80 s	−29 ° 29 ′ 48.9 ″	14243 ± 46	648
65C	PGC 47403	E2		0.63 'x 0.49'	+15.47	13 h 29 m 53.168 s	−29 ° 29 ′ 30.70 ″	14243 ± 45	626
65D	PGC 47401	E2		0.33 'x 0.23'	+15.62	13 h 29 m 52.12 s	−29 ° 30 ′ 47.3 ″	13733 ± 3	607
65E	PGC 47407	E0		0.15 '× 0.15'	+17.01	13 h 29 m 55.43 s	−29 ° 29 ′ 29.6 ″	14405 ± 107	637
66	Group type: EI		Big Bear
66A	HCG 66A	E1		0.45 'x 0.39'	+16.15	13 h 38 m 38.28 s	+ 57 ° 18 ′ 44.5 ″	20688 ± 36	929
66B	PGC 48231	S0		0.49 'x 0.27'	+16.6	13 h 38 m 40.380 s	+ 57 ° 18 ′ 45.1 ″	21440 ± 52	963
66C	PGC 48222	S0		0.32 '× 0.16'	+17.16	13 h 38 m 35.11 s	+ 57 ° 18 ′ 29.6 ″	20801 ± 74	934
66D	PGC 48220	E2		0.17 '× 0.12'	+17.9	13 h 38 m 34.420 s	+ 57 ° 18 ′ 15.60 ″	20666 ± 53	928
67	Group type: EIII		Virgin
67A	NGC 5306	E1		1.96 'x 1.81'	+13.43	13 h 49 m 11.404 s	−7 ° 13 ′ 27.85 ″	7213 ± 13	319
67B	PGC 49017	Sb AGN		2.1 'x 0.4'	+15.12	13 h 48 m 59.46 s	−7 ° 11 ′ 41.8 ″	7588 ± 10	336
67C	PGC 49040	Scd		0.7 '× 0.3'	+15.69	13 h 49 m 12.28 s	−7 ° 12 ′ 32.8 ″	7528 ± 23	333
67D	PGC 49036	S0 pec?		0.55 'x 0.33'	+15.77	13 h 49 m 9.80 s	−7 ° 13 ′ 54.3 ″	7101 ± 22	314
68	Group type: EII		Hunting dogs
68A	NGC 5353	S0 AGN		2.2 '× 1.1'	+11.96	13 h 53 m 26.693 s	+ 40 ° 16 ′ 58.91 ″	2325 ± 3	107
68B	NGC 5354	SA0 sp LINER		1.4 '× 1.3'	+12.33	13 h 53 m 26.703 s	+ 40 ° 18 ′ 09.93 ″	2579 ± 13	119
68C	NGC 5350	SB (r) b Sbrst		3.2 'x 2.3'	+12.15	13 h 53 m 21.630 s	+ 40 ° 21 ′ 50.20 ″	2321 ± 2	107
68D	NGC 5355	E3		1.12 'x 0.72'	+13.9	13 h 53 m 45.560 s	+ 40 ° 20 ′ 19.20 ″	2344 ± 11	108
68E	NGC 5358	S0 / a		1.24 'x 0.49'	+14.3	13 h 54 m 00.410 s	+ 40 ° 16 ′ 38.30 ″	2401 ± 27	111
69	Group type: SII		Bear keeper
69A	PGC 49502	Sc		1.58 'x 0.37'	+15.93	13 h 55 m 29.76 s	+ 25 ° 04 ′ 25.2 ″	8856 ± 48	397
69B	PGC 49507	SBb		0.49 'x 0.38'	+14.58	13 h 55 m 34,400 s	+ 25 ° 02 ′ 59.00 ″	8724 ± 27	391
69C	PGC 49505	S0?		0.45 'x 0.37'	+15.76	13 h 55 m 32.57 s	+ 25 ° 04 ′ 27.7 ″	8546 ± 44	383
69D	PGC 49499	SB0		0.11 '× 0.09'	+17.7	13 h 55 m 28.380 s	+ 25 ° 04 ′ 24.90 ″	8859 ± 49	397
70	Group type: SII		Hunting dogs
70A	UGC 8990	Sat		1.2 'x 0.2'	+16.1	14 h 04 m 10.044 s	+ 33 ° 20 ′ 15.11 ″	8238 ± 25	371
70B	IC 4371	SBa		0.9 '× 0.6'	+15.12	14 h 04 m 10.88 s	+ 33 ° 18 ′ 28.0 ″	8198 ± 47	369
70C	PGC 50159	Sbc		0.9 'x 0.2'	+15.16	14 h 04 m 09.85 s	+ 33 ° 20 ′ 45.8 ″	8079 ± 48	364
70D	IC 4370	Sc		0.37 'x 0.30'	+16.24	14 h 04 m 09.89 s	+ 33 ° 20 ′ 45.4 ″	18846 ± 49	845
70E	IC 4369	S?		0.4 '× 0.4'	+16.18	14 h 04 m 05.86 s	+ 33 ° 19 ′ 14.2 ″	19117 ± 55	857
70F	PGC 50133	SBb		0.26 'x 0.21'	+17.25	14 h 04 m 04.33 s	+ 33 ° 19 ′ 45.1 ″	19243 ± 130	862
70G	PGC 50123	Sat		0.24 'x 0.21'	+16.29	14 h 04 m 15.71 s	+ 33 ° 19 ′ 54.6 ″	19010 ± 90	852
71	Group type: SI		Bear keeper
71A	NGC 5008	Scd: AGN		2.5 'x 1.4'	+14.43	14 h 10 m 57.200 s	+ 25 ° 29 ′ 48.00 ″	9244 ± 9	415
71B	IC 4382	Sb		0.7 'x 0.2'	+15.42	14 h 11 m 02.55 s	+ 25 ° 31 ′ 20.2 ″	9358 ± 31	426
71C	PGC 50640	SBc		0.46 'x 0.33'	+16.29	14 h 11 m 05.10 s	+ 25 ° 28 ′ 57.6 ″	8450 ± 76	396
71D	PGC 50641	S0		0.26 'x 0.18'	+17.18	14 h 11 m 08.25 s	+ 25 ° 27 ′ 28.1 ″	20590 ± 103	911
72	Arp 328 ; UGC 9532; Group type: EIII		Bear keeper
72A	PGC 52844	S0 AGN		0.5 '× 0.1'	+16.14	14 h 47 m 53.390 s	+ 19 ° 04 ′ 37.14 ″	12506 ± 36	561
72B	VV 165b	S0		0.52 'x 0.22'	+16.14	14 h 47 m 54.92 s	+ 19 ° 03 ′ 36.1 ″	12356 ± 38	554
72C	PGC 52851	E2		0.6 'x 0.2'	+16.12	14 h 47 m 56.81 s	+ 19 ° 02 ′ 42.3 ″	13062 ± 40	586
72D	PGC 52848	SB0		0.2 'x 0.2'	+15.97	14 h 47 m 55.64 s	+ 19 ° 03 ′ 26.2 ″	12558 ± 45	563
72E	PGC 52850	Scd		0.25 'x 0.25'	+18.56	14 h 47 m 55.19 s	+ 19 ° 03 ′ 06.0 ″	24050 ± 288	1076
72F	PGC 52847	S0		0.30 'x 0.20'	+18.59	14 h 47 m 55.11 s	+ 19 ° 02 ′ 50.7 ″	13950 ± 103	625
73	Group type: SI		Bear keeper
73A	NGC 5829	SA (s) c HII		1.8 'x 1.5'	+13.90	15 h 02 m 41.98 s	+ 23 ° 20 ′ 00.9 ″	5635 ± 7	255
73B	IC 4526	in the		0.38 'x 0.29'	+17.02	15 h 02 m 38.20 s	+ 23 ° 21 ′ 01.8 ″	13685 ± 19	615
73C	PGC 53720	S0		0.24 'x 0.20'	+17.00	15 h 02 m 49.877 s	+ 23 ° 21 ′ 34.74 ″	13557 ± 26	609
73D	PGC 53703	Sb		0.31 'x 0.10'	+18.66	15 h 02 m 31.60 s	+ 23 ° 22 ′ 10.9 ″	13480 ± 103	606
73E	PGC 53702	Sd		0.30 'x 0.18'	+17.92	15 h 02 m 31.26 s	+ 23 ° 19 ′ 41.9 ″	28500 ± 109	1276
74	Group type: EII		Serpens
74A	NGC 5910	E1		0.82 'x 0.77'	+14.96	15 h 19 m 24.73 s	+ 20 ° 53 ′ 46.6 ″	12255 ± 30	551
74B	PGC 54689	E3		0.62 'x 0.43'	+15.65	15 h 19 m 24.270 s	+ 20 ° 53 ′ 26.67 ″	11976 ± 21	538
74C	VV 139 c	S0		0.45 'x 0.30'	+17.00	15 h 19 m 25.91 s	+ 20 ° 53 ′ 57.6 ″	12266 ± 43	551
74D	PGC 54697	E2		0.33 'x 0.26'	+17.06	15 h 19 m 31.801 s	+ 20 ° 53 ′ 00.29 ″	11681 ± 42	525
74E	PGC 54694	S0		0.20 'x 0.13'	+18.60	15 h 19 m 27.77 s	+ 20 ° 54 ′ 31.3 ″	11489 ± 97	516
75	Group type: EIII		Serpens
75A	HCG 75A	E4		0.73 'x 0.53'	+15.32	15 h 21 m 30.39 s	+ 21 ° 11 ′ 26.3 ″	12538 ± 42	563
75B	PGC 54803	Sb		0.63 '× 0.17'	+17.93	15 h 21 m 30.43 s	+ 21 ° 11 ′ 32.8 ″	12228 ± 43	550
75C	PGC 54827	S0		0.35 'x 0.23'	+16.50	15 h 21 m 38.803 s	+ 21 ° 10 ′ 36.80 ″	12292 ± 56	553
75D	PGC 54824	Sd		0.33 'x 0.18'	+16.70	15 h 21 m 37.19 s	+ 21 ° 10 ′ 53.6 ″	12334 ± 42	554
75E	PGC 54818	Sat		0.40 'x 0.18'	+17.10	15 h 21 m 34.10 s	+ 21 ° 10 ′ 44.3 ″	12300 ± 300	553
75F	PGC 54802	S0		0.21 '× 0.17'	+17.33	15 h 21 m 29.91 s	+ 21 ° 11 ′ 06.7 ″	13080 ± 67	588
75G	HCG 75G	Cand. dwarf			+18.0	15 h 21 m 31.560 s	+ 21 ° 10 ′ 40.59 ″
75H	HCG 75H	Cand. dwarf		0.22 '× 0.13'	+18.83	15 h 21 m 31.78 s	+ 21 ° 10 ′ 10.9 ″		548
76	Group type: SIII		Snake
76A	NGC 5944	S?		0.7 'x 0.2'	+15.87	15 h 31 m 47.58 s	+ 7 ° 18 ′ 29.6 ″	10088 ± 28	452
76B	NGC 5941	E2		0.68 'x 0.55'	+14.91	15 h 31 m 40.216 s	+ 7 ° 20 ′ 20.46 ″	10002 ± 30	449
76C	NGC 5942	S0?		0.71 'x 0.67'	+15.31	15 h 31 m 36.809 s	+ 7 ° 18 ′ 44.42 ″	10663 ± 29	478
76D	PGC 55316	E?		0.58 'x 0.49'	+15.83	15 h 31 m 42.214 s	+ 7 ° 17 ′ 14.35 ″	10150 ± 33	457
76E	PGC 55325	SB0		0.27 'x 0.25'	+17.35	15 h 31 m 50.19 s	+ 7 ° 18 ′ 41.5 ″	10328 ± 52	463
76F	PGC 55313	S0		0.47 'x 0.32'	+17.27	15 h 31 m 39.39 s	+ 7 ° 20 ′ 06.4 ″	10216 ± 90	458
76G	PGC 55307	Sc		1.20 'x 0.21'	+17.65	15 h 31 m 36.00 s	+ 7 ° 20 ′ 59.6 ″	9843 ± 81	442
77	UGC 10049 ; Group type: EIII		Snake
77A	HCG 77A	S0		0.87 'x 0.61'	+16.38	15 h 49 m 16.894 s	+ 21 ° 49 ′ 09.79 ″	10508 ± 56	474
77B	PGC 56122	S0		0.74 'x 0.46'	+16.21	15 h 49 m 16.81 s	+ 21 ° 49 ′ 24.2 ″	10690 ± 69	482
77C	PGC 56121	in the		1.08 'x 0.54'	+16.45	15 h 49 m 16.60 s	+ 21 ° 49 ′ 55.0 ″	10345 ± 31	97
77D	PGC 56125	in the		0.37 'x 0.26'	+17.42	15 h 49 m 17.10 s	+ 21 ° 49 ′ 43.3 ″	2250 ± 63	105
78	Group type: SIII		Draco
78A	UGC 10057	(R ') SB (s) bc		1.4 'x 0.7'	+14.87	15 h 48 m 17.36 s	+ 68 ° 13 ′ 14.7 ″	8599 ± 31	392
78B	PGC 56067	S0		0.7 'x 0.2'	+14.95	15 h 48 m 08.90 s	+ 68 ° 12 ′ 24.7 ″	9544 ± 30	434
78C	PGC 56095	S0		0.51 '× 0.14'	+18.25	15 h 48 m 42.35 s	+ 68 ° 11 ′ 40.1 ″	18200 ± 281	821
78D	PGC 56086	Sm		0.49 'x 0.31'	+17.23	15 h 48 m 33.10 s	+ 68 ° 14 ′ 09.0 ″	10000 ± 187	454
79	Seyfert's sextet ; Group type: EIII		Snake
79A	NGC 6027A	Sa pec LINER		0.5 '× 0.4'	+14.98	15 h 59 m 11.14 s	+ 20 ° 45 ′ 16.5 ″	4560 ± 8	208
79B	NGC 6027E	S0 pec HII		0.4 '× 0.2'	+14.7	15 h 59 m 12.55 s	+ 20 ° 45 ′ 48.1 ″	4447 ± 11	203
79C	NGC 6027B	S0 pec		0.4 '× 0.2'	+15.31	15 h 59 m 10.840 s	+ 20 ° 45 ′ 43.40 ″	4053 ± 8	185
79D	NGC 6027C	SB (s?) C pec HII		0.9 'x 0.2'	+16.75	15 h 59 m 11.840 s	+ 20 ° 44 ′ 48.70 ″	4620 ± 3	211
79E	NGC 6027D	SB (s) bc: pec		0.2 'x 0.2'	+16.47	15 h 59 m 12.90 s	+ 20 ° 45 ′ 35.4 ″	19809 ± 50	889
80	Group type: SII		Draco
80A	HCG 80A	Sd AGN		0.85 'x 0.18'	+15.66	15 h 59 m 19.08 s	+ 65 ° 13 ′ 57.8 ″	8975 ± 4	408
80B	PGC 56590	S?		0.34 'x 0.29'	+16.37	15 h 59 m 21.618 s	+ 65 ° 13 ′ 22.43 ″	9584 ± 39	436
80C	PGC 56572	in the		0.33 'x 0.27'	+16.09	15 h 59 m 07.25 s	+ 65 ° 14 ′ 01.8 ″	9550 ± 37	434
80D	HCG 80D	in the		0.45 '× 0.18'	+17.01	15 h 59 m 12.04 s	+ 65 ° 13 ′ 19.1 ″	9108 ± 54	415
81	UGC 10319 ; Group type: EIII		Hercules
81A	HCG 81A	Sc		0.40 'x 0.15'	+17.11	16 h 18 m 13.637 s	+ 12 ° 48 ′ 10.35 ″	14676 ± 46	659
81B	PGC 57774	S0		0.39 '× 0.18'	+17.11	16 h 18 m 14.13 s	+ 12 ° 47 ′ 19.2 ″	15 150 ± 94	681
81C	PGC 57779	S0		0.42 'x 0.23'	+17.78	16 h 18 m 14.88 s	+ 12 ° 47 ′ 35.1 ″	15050 ± 96	671
81D	PGC 57777	S0a		0.26 'x 0.23'	+17.74	16 h 18 m 14.67 s	+ 12 ° 47 ′ 43.4 ″	14954 ± 91	672
82	Group type: EII		Hercules
82A	NGC 6162	S0		0.9 '× 0.7'	+14.62	16 h 28 m 22.372 s	+ 32 ° 50 ′ 57.52 ″	11177 ± 30	506
82B	NGC 6163	Sba HII		0.81 'x 0.57'	+15.0	16 h 28 m 27.895 s	+ 32 ° 50 ′ 46.78 ″	10447 ± 37	473
82C	NGC 6161	in the		0.84 'x 0.32'	+15.8	16 h 28 m 20.629 s	+ 32 ° 48 ′ 38.32 ″	10095 ± 38	457
82D	PGC 58231	S0a		0.49 '× 0.19'	+16.72	16 h 28 m 16.70 s	+ 32 ° 48 ′ 36.8 ″	11685 ± 46	528
83	Group type: EIII		Hercules
83A	PGC 58559	E0		0.26 'x 0.26'	+16.83	16 h 35 m 36.309 s	+ 6 ° 15 ′ 55.30 ″	15560 ± 60	699
83B	PGC 58565	E2		0.30 'x 0.23'	+17.04	16 h 35 m 40.25 s	+ 6 ° 15 ′ 44.30 ″	16442 ± 69	738
83C	PGC 58569	Scd		0.26 'x 0.14'	+17.52	16 h 35 m 43.15 s	+ 6 ° 16 ′ 44.5 ″	16520 ± 133	742
83D	PGC 58562	Sd		0.12 'x 0.10'	+19.09	16 h 35 m 41.09 s	+ 6 ° 15 ′ 32.5 ″	15500 ± 133	758
83E	PGC 58561	S0		0.10 'x 0.08'	+19.44	16 h 35 m 38.13 s	+ 6 ° 16 ′ 23.8 ″
84	Group type: EIII		Little Bear
84A	HCG 84A	E2		0.59 'x 0.49'	+15.77	16 h 44 m 22.823 s	+ 77 ° 50 ′ 19.49 ″	16654 ± 61	752
84B	PGC 58873	S0		0.48 'x 0.21'	+16.86	16 h 44 m 13.40 s	+ 77 ° 51 ′ 31.1 ″	16554 ± 73	748
84C	PGC 58884	Sat		0.50 'x 0.25'	+16.82	16 h 44 m 30.00 s	+ 77 ° 49 ′ 48.9 ″	16353 ± 71	738
84D	PGC 58861	S0		0.27 'x 0.15'	+17.54	16 h 44 m 02.44 s	+ 77 ° 51 ′ 23.3 ″	16800 ± 92	758
84E	PGC 58881	E0		0.15 '× 0.15'	+18.00	16 h 44 m 26.93 s	+ 77 ° 50 ′ 17.0 ″	16950 ± 81	765
84F	PGC 58856	E0		0.20 'x 0.20'	+18.42	16 h 43 m 48.71 s	+ 77 ° 50 ′ 54.3 ″	32500 ± 100	1460
85	Group type: EIII		Draco
85A	HCG 85A	E1		0.53 'x 0.49'	+15.77	18 h 50 m 18.446 s	+ 73 ° 21 ′ 05.23 ″	11155 ± 38	507
85B	PGC 62477	E.		0.44 'x 0.41'	+15.94	18 h 50 m 26.328 s	+ 73 ° 20 ′ 42.68 ″	12122 ± 36	550
85C	HCG 85C	S0		0.30 'x 0.14'	+17.65	18 h 50 m 29.677 s	+ 73 ° 21 ′ 27.41 ″	11912 ± 47	541
85D	PGC 62484	E0		0.22 'x 0.21'	+18.12	18 h 50 m 36.07 s	+ 73 ° 20 ′ 57.0 ″	11900 ± 96	541
86	Group type: EII		Sagittarius
86A	PGC 63753	E2		1.2 '× 0.7'	+14.31	19 h 52 m 08.765 s	−30 ° 49 ′ 32.70 ″	6013 ± 11	270
86B	PGC 63748	E2		0.74 'x 0.55'	+15.13	19 h 51 m 59.065 s	−30 ° 48 ′ 58.40 ″	5863 ± 9	264
86C	PGC 63752	SB0		0.57 'x 0.44'	+16.08	19 h 51 m 57.464 s	−30 ° 51 ′ 25.01 ″	5317 ± 35	239
86D	PGC 63749	S0		0.62 'x 0.32'	+15.85	19 h 51 m 51.94 s	−30 ° 48 ′ 30.4 ″	5923 ± 18	266
87	Group type: SI		Capricornus
87A	PGC 65415	S0 ^ 0 ^ pec sp AGN		1.6 '× 0.3'	+15.27	20 h 48 m 15.001 s	−19 ° 50 ′ 57.94 ″	8443 ± 14	381
87B	PGC 65409	SA (r) 0+ pec?		0.7 '× 0.6'	+15.43	20 h 48 m 10.933 s	−19 ° 51 ′ 23.14 ″	8738 ± 23	394
87C	PGC 65412	Sb HII		0.7 'x 0.2'	+16.09	20 h 48 m 11.988 s	−19 ° 49 ′ 55.93 ″	8914 ± 7	402
87D	PGC 65414	Sd		0.26 '× 0.19'	+17.83	20 h 48 m 12.77 s	−19 ° 50 ′ 46.1 ″	10200 ± 160	459
88	Group type: SIII		Aquarius
88A	NGC 6978	Sb AGN		1.77 'x 0.65'	+13.8	20 h 52 m 35.436 s	−5 ° 42 ′ 40.06 ″	6033 ± 25	275
88B	NGC 6977	SB (r) a pec: dSy2		1.22 'x 0.90'	+14.0	20 h 52 m 29.704 s	−5 ° 44 ′ 46.33 ″	6192 ± 15	283
88C	NGC 6975	SAB (r) bc? HII		0.98 'x 0.84'	+14.7	20 h 52 m 26.033 s	−5 ° 46 ′ 20.20 ″	5956 ± 6	272
88D	PGC 65612	Sc HII		0.70 'x 0.29'	+15.6	20 h 52 m 12.771 s	−5 ° 47 ′ 54.04 ″	6041 ± 4	276
89	Group type: SII		Aquarius
89A	PGC 66570	Sc HII		0.9 '× 0.6'	+15.36	21 h 20 m 01.03 s	−3 ° 55 ′ 19.7 ″	8808 ± 8	400
89B	PGC 66580	SBc		0.70 'x 0.34'	+16.08	21 h 20 m 19.15 s	−3 ° 53 ′ 45.7 ″	8985 ± 45	403
89C	PGC 66575	Scd		0.48 'x 0.29'	+16.41	21 h 20 m 08.349 s	−3 ° 55 ′ 03.42 ″	8872 ± 40	403
89D	PGC 66574	Sm		0.27 'x 0.17'	+17.16	21 h 20 m 08.02 s	−3 ° 54 ′ 30.1 ″	8872 ± 40	402
90	Group type: EIII		Southern fish
90A	NGC 7172	Sa pec sp; Sy2 HII		2.5 'x 1.4'	+12.85	22 h 02 m 01.910 s	−31 ° 52 ′ 11.30 ″	2603 ± 12	118
90B	NGC 7176	E pec:		1.0 '× 0.8'	+12.34	22 h 02 m 08.45 s	−31 ° 59 ′ 23.3 ″	2511 ± 14	114
90C	NGC 7173	E + pec:		1.2 '× 0.9'	+13.08	22 h 02 m 03.19 s	−31 ° 58 ′ 25.3 ″	2497 ± 12	113
90D	NGC 7174	Sab pec sp		2.3 '× 1.2'	+14.23	22 h 02 m 06.490 s	−31 ° 59 ′ 33.90 ″	2659 ± 9	120
91	Group type: SI		Southern fish
91A	NGC 7214	SB (s) bc pec: Sy1.2		2.2 'x 1.4'	+13.05	22 h 09 m 07.68 s	−27 ° 48 ′ 34.1 ″	6934 ± 10	312
91B	PGC 68164	Sc HII		1.1 'x 0.2'	+15.16	22 h 09 m 16.27 s	−27 ° 43 ′ 49.2 ″	7189 ± 64	327
91C	PGC 68160	Sc		0.80 'x 0.55'	+14.72	22 h 09 m 14.01 s	−27 ° 46 ′ 55.9 ″	7190 ± 10	323
91D	PGC 68155	SB0		0.4 '× 0.3'	+16	22 h 09 m 08.400 s	−27 ° 48 ′ 01.60 ″	7315 ± 22	329
92	Stephan's quintet ; Group type: SII		Pegasus
92A	NGC 7320 ; Is a foreground galaxy, so not connected to the group. Today NGC 7320C is counted instead , so that it is still a quintet.	SA (s) d HII		2.2 '× 1.1'	+13.23	22 h 36 m 03.38 s	+ 33 ° 56 ′ 53.2 ″	786 ± 20	450
92B	NGC 7318B	SB (s) bc pec		1.9 'x 1.2'	+13.92	22 h 35 m 58.40 s	+ 33 ° 57 ′ 57.25 ″	5774 ± 24	267
92C	NGC 7319	SB (s) bc pec Sy2		1.7 '× 1.3'	+14.11	22 h 36 m 03.545 s	+ 33 ° 58 ′ 32.59 ″	6747 ± 4	311
92D	NGC 7318A	E2 pec		1.7 '× 1.3'	+14.33	22 h 35 m 56.747 s	+ 33 ° 57 ′ 55.66 ″	6630 ± 23	305
92E	NGC 7317	E4		1.1 '× 1.1'	+14.57	22 h 35 m 51.88 s	+ 33 ° 56 ′ 41.6 ″	6599 ± 26	304
93	Group type: EIII		Pegasus
93A	NGC 7550	SA0- AGN		1.4 '× 1.2'	+13.16	23 h 15 m 16.008 s	+ 18 ° 57 ′ 42.47 ″	5072 ± 20	234
93B	NGC 7549	SB (s) cd pec AGN		2.8 'x 0.7'	+13.74	23 h 15 m 17.229 s	+ 19 ° 02 ′ 30.09 ″	4736 ± 3	219
93C	NGC 7547	(R ') SAB (s) 0 / a: pec		1.1 '× 0.5'	+14.73	23 h 15 m 03,404 s	+ 18 ° 58 ′ 24.39 ″	4772 ± 10	221
93D	NGC 7553	S0		0.7 '× 0.6'	+15.68	23 h 15 m 33.094 s	+ 19 ° 02 ′ 53.39 ″	5173 ± 34	239
93E	NGC 7558	Sat		0.4 '× 0.4'	+15.88	23 h 15 m 38.230 s	+ 18 ° 55 ′ 10.94 ″	8881 ± 39	405
94	Group type: EI		Pegasus
94A	NGC 7578B	E1:; BrClG		1.0 '× 1.0'	+14.96	23 h 17 m 13.56 s	+ 18 ° 42 ′ 29.4 ″	12045 ± 32	546
94B	NGC 7578A	S0 ^ 0 ^ pec		1.4 '× 1.4'	+14.34	23 h 17 m 11.95 s	+ 18 ° 42 ′ 04.6 ″	12068 ± 32	547
94C	PGC 70943	S0		0.67 'x 0.29'	+16.20	23 h 17 m 20.26 s	+ 18 ° 44 ′ 05.0 ″	12120 ± 52	540
94D	NGC 7578C	S0		0.31 '× 0.19'	+16.35	23 h 17 m 15.18 s	+ 18 ° 42 ′ 42.8 ″	13028 ± 24	590
94E	PGC 70937	Sd		0.49 '× 0.12'	+18.15	23 h 17 m 15.42 s	+ 18 ° 43 ′ 38.5 ″	12250 ± 103	555
94F	PGC 70939	S0		0.23 'x 0.17'	+18.16	23 h 17 m 18.49 s	+ 18 ° 44 ′ 22.3 ″	13038 ± 22	590
94G	PGC 70941	S0		0.20 'x 0.11'	+18.57	23 h 17 m 19.93 s	+ 18 ° 44 ′ 58.0 ″	13200 ± 114	597
95	Group type: EIII		Pegasus
95A	NGC 7609	E3		0.88 'x 0.65'	+15.23	23 h 19 m 30.05 s	+ 9 ° 30 ′ 29.6 ″	11879 ± 29	537
95B	PGC 71080	Scd		0.7 'x 0.2'	+15.98	23 h 19 m 33.79 s	+ 9 ° 29 ′ 41.8 ″	11637 ± 48	362
95C	PGC 71077	Sm		0.95 'x 0.31'	+16.24	23 h 19 m 31.09 s	+ 9 ° 30 ′ 10.7 ″	11562 ± 40	523
95D	PGC 71074	Sc		0.74 'x 0.15'	+17.23	23 h 19 m 27.84 s	+ 9 ° 29 ′ 39.7 ″	12350 ± 97	558
96	Group type: SII		Pegasus
96A	NGC 7674	SA (r) bc pec; HIISy2		1.1 '× 1.0'	+13.92	23 h 27 m 56.724 s	+ 8 ° 46 ′ 44.53 ″	8671 ± 9	394
96B	NGC 7675	E2 HII		0.62 'x 0.47'	+15.04	23 h 28 m 05.920 s	+ 8 ° 46 ′ 06.94 ″	8616 ± 42	391
96C	NGC 7674A	Sa HII		0.41 'x 0.29'	+16.1	23 h 27 m 58.78 s	+ 8 ° 46 ′ 58.1 ″	8852 ± 10	402
96D	PGC 71507	in the		0.22 '× 0.12'	+17.13	23 h 27 m 00.20 s	+ 8 ° 46 ′ 02.4 ″	8975 ± 57	408
97	Group type: EII		fishes
97A	IC 5357	SAB0- pec:		1.7 '× 1.1'	+14.33	23 h 47 m 22.99 s	−2 ° 18 ′ 02.4 ″	6932 ± 22	314
97B	IC 5359	Sc		1.06 '× 0.12'	+15.72	23 h 47 m 37.86 s	−2 ° 19 ′ 00.0 ″	6666 ± 21	303
97C	IC 5356	S?		0.78 'x 0.49'	+15.05	23 h 47 m 23.79 s	−2 ° 21 ′ 04.5 ″	6666 ± 21	273
97D	IC 5351	E.		0.94 'x 0.82'	+14.73	23 h 47 m 18.93 s	−2 ° 18 ′ 48.6 ″	6328 ± 30	288
97E	IC 5352	S0a		0.39 'x 0.33'	+16.75	23 h 47 m 19.900 s	−2 ° 16 ′ 50.40 ″	6665 ± 24	303
98	Group type: EII		fishes
98A	NGC 7783A	SB0		1.44 'x 0.66'	+13.9	23 h 54 m 10.090 s	+ 0 ° 22 ′ 58.30 ″	7947 ± 17	360
98B	NGC 7783B	S0		0.4 '× 0.3'	+14.99	23 h 54 m 12.064 s	+ 0 ° 22 ′ 37.63 ″	7959 ± 26	361
98C	NGC 7783C	E.		0.29 'x 0.22'	+16.27	23 h 54 m 13.778 s	+ 0 ° 21 ′ 25.32 ″	8145 ± 33	369
98D	NGC 7783D	Sc		0.3 '× 0.3'	+16.94	23 h 54 m 10.61 s	+ 0 ° 23 ′ 39.5 ″	14950 ± 67	673
99	Group type: SII		Pegasus
99A	UGC 12897	Sab		1.1 '× 0.4'	+14.84	00 h 00 m 37.94 s	+ 28 ° 23 ′ 04.4 ″	8705 ± 9	397
99B	UGC 12899	E.		1.0 '× 0.9'	+14.68	00 h 00 m 46.96 s	+ 28 ° 24 ′ 07.3 ″	8764 ± 19	399
99C	UGC 58	Sc		0.8 '× 0.4'	+15.71	00 h 00 m 44.00 s	+ 28 ° 24 ′ 05.2 ″	8157 ± 32	372
99D	PGC 60	S0a		0.72 'x 0.46'	+17.44	00 h 00 m 45.09 s	+ 28 ° 22 ′ 18.2 ″	8643 ± 82	394
99E	PGC 57	S0		0.38 'x 0.30'	+17.84	00 h 00 m 42.41 s	+ 28 ° 22 ′ 08.4 ″	9007 ± 96	410
100	Group type: SI		Pegasus
100A	NGC 7803	S0 / a		1.0 '× 0.6'	+14.06	00 h 01 m 19.97 s	+ 13 ° 06 ′ 40.5 ″	5366 ± 6	246
100B	PGC 108	S0 / a		0.58 'x 0.52'	+15.40	00 h 01 m 26.04 s	+ 13 ° 06 ′ 46.8 ″	5256 ± 35	241
100C	PGC 89	SBc		0.9 '× 0.5'	+15.87	00 h 01 m 13.38 s	+ 13 ° 08 ′ 38.6 ″	5461 ± 38	250
100D	PGC 92	Scd		0.53 'x 0.20'	+16.97	00 h 01 m 14.97 s	+ 13 ° 06 ′ 45.2 ″	5590 ± 32	256

See also

List of astronomical catalogs

Web links

Commons : Hickson Compact Group  - collection of images, videos and audio files

• COMPACT GROUP OF GALAXIES
• Overview map HCG

Individual evidence

1. ^ Paul Hickson: Systematic properties of compact groups of galaxies . In: Astrophysical Journal . Vol. 255, 1982, pp. 382–391 , doi : 10.1086 / 159838 , bibcode : 1982ApJ ... 255..382H (English).
2. ^ Paul Hickson: Compact Groups of Galaxies. 1997, accessed October 23, 2006 . 
3. ↑ ^{a b c d e f g} Searching NED. In: NASA / IPAC EXTRAGALACTIC DATABASE. Retrieved November 9, 2008 .