IC 4397
| Galaxy IC 4397 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Bear keeper |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 14 h 17 m 58.7 s |
| declination | + 26 ° 24 ′ 45 ″ |
| Appearance | |
| Morphological type | S? / HII / Sy2 |
| Brightness (visual) | 14.2 mag |
| Brightness (B-band) | 13.4 mag |
| Angular expansion | 1.10 × 0.9 |
| Position angle | 165 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Redshift | 0.014744 +/- 0.000020 |
| Radial velocity | 4420 +/- 6 km / s |
|
Stroke distance v rad / H 0 |
(200 ± 14) · 10 6 ly (61.3 ± 4.3) Mpc |
| history | |
| discovery | Guillaume Bigourdan |
| Discovery date | June 23, 1889 |
| Catalog names | |
| IC 4397 • UGC 9150 • PGC 51073 • CGCG 163-018 • MCG + 05-34-012 • IRAS 14156 + 2638 • KUG 1415 + 266 • 2MASX J14175868 + 2624454 • Mrk 1510 • 2MASS J14175870 + 2624454 | |
IC 4397 is an active spiral galaxy with extensive star formation regions of the Hubble type Sbc in the constellation Bear Guardian in the northern sky . It is estimated to be 492 million light years away from the Milky Way and has a diameter of about 145,000 ly.
In the same area of the sky are the galaxies NGC 5553 , IC 4395 , IC 4399 , IC 4405 .
The object was discovered by Guillaume Bigourdan on June 23, 1889 .
Web links
Individual evidence
Attention: The sorting key “IC 4397” overwrites the previously used key “IC4397”.