List of proper names of deep sky objects
This page is a list of proper names of deep sky objects .
Proper names (selection)
This section contains proper names of astronomical objects.
| Name (German) | Name (International) | Object type | Catalog numbers (extract) | Comments and individual evidence |
|---|---|---|---|---|
| Eagle Nebula | Eagle nebula | Diffuse nebula and open star cluster | Messier 16, IC 4703 + NGC 6611 | |
| Ant fog | Ant nebula | Planetary nebula | Menzel 3, Hen 2-154 | |
| Antennae galaxies | Ringtail Galaxy / Antennae | Pair of galaxies | NGC 4038 + NGC 4039 , PGC 37967 | |
| Bear Claw Nebula | Bear Claw Nebula | Diffuse fog | NGC 6334, Gum 64 | |
| Barnard's Galaxy , Barnard's Galaxy | Barnard's Galaxy | Galaxy | NGC 6822, IC 4895, PGC 63616 | |
|
Barnard's Loop (Translation: Barnard's Loop ) |
Barnard's Loop | Emission nebula | Sh 2-276 | |
| Barnard's Merope Nebula | Barnard's Merope Nebula | Reflection fog | IC 349 | |
| Blackeye Galaxy | Black Eye Galaxy | Galaxy | Messier 64, NGC 4826, PGC 44182 | |
| Bubble mist | Bubble nebula | Emission nebula | NGC 7635 | |
| Blue snowball | Blue Snowball | Planetary nebula | NGC 7662, PK 106-17.1 | |
| Flashing fog | Blinking Planetary | Planetary nebula | NGC 6826, PK 083 + 12.1 | |
| Bode's Galaxy | Bodes's Nebula | Galaxy | Messier 81, NGC 3031, PGC 28630 | |
| Boomerang fog , boomerang fog | Boomerang Nebula | Planetary nebula | ESO 172-7 | |
| California Nebula , California Nebula | California nebula | Emission nebula | NGC 1499 | |
| Cirrus nebula | Cirrus Nebula | Supernova remnant | NGC 6960 + NGC 6974 + NGC 6979 + NGC 6992 + NGC 6995 + IC 1340 | |
| Crescent Nebula | Crescent Nebula | Emission nebula | NGC 6888 | |
| De Mairan's mist | De Mairan's Nebula | Diffuse fog | Messier 43; NGC 1982 | |
| Egg mist | Egg nebula | Diffuse fog | CRL 2688 | |
| Elephant Trunk Nebula , Elephant Trunk Nebula | Emission nebula and star clusters | IC 1396A, vdB 142 | ||
| Duck fog | Duck Nebula | Diffuse fog | NGC 2359 + IC 468 | |
| Eskimo mist | Eskimo Nebula | Planetary nebula | NGC 2392, PK 197 + 17.1 | |
| Owl pile | Owl cluster | Open star cluster | NGC 457 | |
| Owl Nebula | Owl Nebula | Planetary nebula | Messier 97, NGC 3587, PK 148 + 57.1 | |
| Wheel of Fire Galaxy | Pinwheel Galaxy | Galaxy | Messier 101, NGC 5457, PGC 50063 | |
| Flaming tree | Flame Nebula | Emission nebula | NGC 2024 | |
| Flame mist | Flame Nebula | Emission nebula | NGC 2024 | |
| Large Magellanic Cloud | Large Magellanic Cloud (LMC) | Galaxy | LEDA 17223, Sm 29, ESO 56-115 | |
| Dumbbell nebula | Dumbbell Nebula | Planetary nebula | Messier 27, NGC 6853, PK 060 + 3.1 | |
|
Herring fog , herring Galaxy |
Whale Galaxy | Galaxy | NGC 4631, PGC 42637 | |
| Heart nebula | Heart nebula | Emission Nebula and Open Star Clusters | IC 1805, NGC 896, Westerhout 4 | |
| Witch head nebula | Witch's Head Nebula | Reflection fog | IC 2118 | |
| Helix Nebula | Helix nebula | Planetary nebula | NGC 7293, PK 036-57.1 | |
| Hubble's Variable Nebula | Hubble's Variable Nebula | Reflection fog | NGC 2261 | |
| Horseshoe Nebula | Omega nebula | Diffuse fog | Messier 17, NGC 6618 | |
| Hyades | Hyades | Open star cluster | Melotte 25 | |
| Intergalactic wanderer | Intergalactic walkers | Globular clusters | NGC 2419 | |
| Jupiter's spirit | Ghost of Jupiter | Planetary nebula | NGC 3242, PK 261 + 32.1 | |
| Beetle nebula | Bug nebula | Planetary nebula | NGC 6302, PK 349 + 01.1 | |
| California fog | California nebula | Emission nebula | NGC 1499 | |
| Cat's Eye Nebula , Cat's Eye | Cat's Eye Nebula | Planetary nebula | NGC 6543, PK 096 + 29.1 | |
| Cat's Paw Nebula | Cat's Paw Nebula | Diffuse fog | NGC 6334, Gum 64 | |
| Tadpole Galaxy | Tadpole Galaxy | Galaxy | LEDA 57129, UGC 10214 | |
| Kembles cascade | Kemble's Cascada | Star pattern | ||
| Pile of hangers | Coat hanger | Star group, star pattern | Collinder 399 | |
| Small Magellanic Cloud | Small Magellanic Cloud (SMC) | Galaxy | NGC 292, LEDA 3085, Im 6, ESO 29-21 | |
| Small dumbbell nebula | Little Dumbbell Nebula | Planetary nebula | Knife 76, NGC 650 / NGC 651, PK 130-10.1 | |
| Coal sack | Coalsack | Dark cloud | no catalog numbers | |
| Cocoon mist , cocoon mist | Cocoon Nebula | Diffuse fog | IC 5146 + Collinder 470 | |
| Crab Nebula , Crab Nebula | Crab Nebula | Supernova remnant | Messier 1, NGC 1952, Sh 2-244 | |
| Lagoon Fog, Lagoon Fog | Lagoon Nebula | Diffuse fog | Messier 8 / NGC 6523 + NGC 6530 (star cluster) / Westerhout 29 | |
| Medusa Nebula , Medusa Nebula | Medusa Nebula | Planetary nebula | Abell 21, PK 205 + 14.1 | |
| Minkowski's footprint | Footprint nebula | Diffuse fog | M 1-92 | |
| Muscle man | Muscle man | Open star cluster | 2nd floor | |
| North American Nebula, North America Nebula | North America Nebula | Emission nebula | NGC 7000 | |
| Omega Nebula , Omega Nebula | Omega nebula | Diffuse fog | Messier 17, NGC 6618 | |
| Pelican nebula | Pelican nebula | Emission nebula | IC 5067 , IC 5070 | |
| Pipe mist | Pipe nebula | Dark cloud | LDN 1773 , Barnard 59 + 65, 66, 67 + 77, 78 | |
| Horsehead Nebula | Horsehead Nebula | Emission nebula and dark cloud | IC 434 and Barnard 33 | |
| Pleiades | Pleiades | Open star cluster | Messier 45 | |
| Praesepe | Beehive cluster | Open star cluster | Messier 44 , NGC 2632 | |
| Retinal nebula | Retina nebula | Planetary nebula | IC 4406, PK 319 + 15.1 | |
| Ring nebula | Ring nebula | Planetary nebula | Messer 57, NGC 6720, PK 063 + 13.1 | |
| Rosette nebula | Rosetta Nebula | Emission Nebula and Open Star Clusters | NGC 2237, 2238, 2239 + NGC 2244 | |
| Red rectangle nebula | Red Rectangle | Planetary nebula | V777 Mon, HD 44179 | |
|
Red Spider Nebula Red Spider Nebula |
Red Spider Nebula | Planetary nebula | NGC 6537, Hen 2-340 | |
| Saturn Nebula | Saturn nebula | Planetary nebula | NGC 7009, PK 037-34.1 | |
| Turtle fog | Turtle in Space, Turtle Nebula | Planetary nebula | NGC 6210, PK 043 + 37.1 | |
| Veil Fog, Veil Fog | Cirrus Nebula | Supernova remnant | NGC 6960 + NGC 6974 + NGC 6979 + NGC 6992 + NGC 6995 + IC 1340 | |
| Keyhole Nebula | Keyhole nebula | Reflection fog | NGC 1999 | |
| Butterfly cluster, butterfly cluster | Butterfly cluster | Open star cluster | Messier 6, NGC 6405 | |
| Butterfly nebula | Butterfly Nebula | Planetary nebula | M 2-9 | |
| Butterfly Nebula | Gamma Cygni Nebula | Emission nebula | IC 1318 | |
| Jewelry box | Jewel Box (Herschel's Jewel Box) | Open star cluster | NGC 4755, Melotte 114 | |
| Snowflake Fog | Snowflake cluster | Open star cluster + nebula | NGC 2264 | |
| Swan Fog, Swan Fog | Swan Nebula | Diffuse fog | Messier 17, NGC 6618 | |
| Sickle nebula | Crescent Nebula | Emission nebula | NGC 6888 | |
| Seven stars | Seven Sisters | Open star cluster | Messier 45 | |
| Sombrero Galaxy | Sombrero Nebula | Galaxy | Messier 104, NGC 4594, PGC 42407 | |
| Spindle Galaxy | Galaxy | NGC 3115, PGC 29265 | ||
| Spirograph nebula | Spirograph Nebula | Planetary nebula | IC 418, PK 215-24.1 | |
|
Stingray fog Stingray Nebula |
Stingray nebula | Planetary nebula | Hen 3-1357 | |
| Stephan's quintet | Stephan's quintet | Galaxy clusters | NGC 7317 + NGC 7318A + NGC 7318B + NGC 7319 + NGC 7320 | |
| Hourglass mist | Engraved Hourglas Nebula | Planetary nebula | Hen 2-95, MyCn18, RCW 77 | |
| Whirlpool galaxy | Whirlpool Galaxy | Galaxy | Messier 51, NGC 5194/5195, PGC 47404 | |
| Southern Firewheel Galaxy | Southern Pinwheel Galaxy | Galaxy | Messier 83 NGC 5236, PGC 48082 | |
| Southern Pleiades | Southern Pleiades | Open star cluster | IC 2602, Collinder 229, Melotte 102 | |
| Southern Crab Nebula | Southern Crab | Planetary nebula | Hen 2-104 | |
| Southern Ring Nebula | Southern Ring Nebula | Planetary nebula | NGC 3132, PK 272 + 12.1 | |
| Tarantula mist | Tarantula Nebula | Emission nebula | NGC 2070 | |
| Thor's helmet | Thor's helmet | Diffuse fog | NGC 2359 + IC 468 | |
| Trifid Nebula , Trifid Nebula | Trifid Nebula | Emission and reflection nebula | Messier 20, NGC 6514 + Barnard 85 | |
| Whale galaxy | Whale Galaxy | Galaxy | NGC 4631, PGC 42637 | |
| Christmas tree star cluster | Christmas Tree Cluster | Open star cluster | NGC 2264 | |
| Whirlpool galaxy | Whirlpool Galaxy | Galaxy | Messier 51, NGC 5194/5195, PGC 47404 | |
| Wild duck pile | Wild duck cluster | Open star cluster | Messier 11, NGC 6705 | |
| Cigar galaxy | Cigar Galaxy | Galaxy | Messier 82 , NGC 3034 , PGC 28655 | |
| Barbell nebula | Planetary nebula | Knife 76, NGC 650 / NGC 651, PK 130-10.1 | ||
| Blue Flash Nebula | Planetary nebula | NGC 6905 , PK 061-09.1 | ||
| Blue Planetary Nebula | Planetary nebula | NGC 3918 , Hen 2-74, PK 294 + 04.1 | ||
| Bowtie Nebula | Planetary nebula | NGC 40 , PK 120 + 9.1 | ||
| Box nebula | Planetary nebula | NGC 6309 , PK 009 + 14.1 | ||
| Brocchi's cluster | Star group, star pattern | Collinder 399 | ||
| Broken Heart Cluster | Open star cluster | NGC 2281 | ||
| Bug nebula | Planetary nebula | NGC 6302, PK 349 + 01.1 | ||
| Butterfly Galaxy | Galaxy pair | NGC 4567 + NGC 4568 , PGC 42064 + LEDA 42069 | ||
| Camel's Eye | Planetary nebula | NGC 1501 , PK 144 + 6.1 | ||
| Caterpillar | Dark cloud | Barnard 168 | ||
| Cleopatra's Eye | Planetary nebula | NGC 1535 , PK 206-40.1 | ||
| Clown Face Nebula | Planetary nebula | NGC 2392, PK 197 + 17.1 | ||
| Cocoon Galaxy | Galaxy | NGC 4485 + NGC 4490 | ||
| Coma Pinwheel Galaxy | Galaxy | Messier 99 , NGC 4254 | ||
| Cork nebula | Planetary nebula | Knife 76, NGC 650 / NGC 651, PK 130-10.1 | ||
| Diabolo Nebula | Planetary nebula | Messier 27, NGC 6853, PK 060 + 3.1 | ||
| Diamond nebula | Planetary nebula | NGC 3242, PK 261 + 32.1 | ||
| Eight-burst nebula | Planetary nebula | NGC 3132, PK 272 + 12.1 | ||
| Emerald Nebula | Planetary nebula | NGC 6572 , PK 034 + 11.1 | ||
| Embryo nebula | Diffuse fog | IC 1848 | ||
| Fish Hook Galaxy | Galaxy pair | NGC 4656 + NGC 4657 | ||
| Flaming Star Nebula | Emission nebula | IC 405 | ||
| Ghost nebula | Emission Nebula and Open Star Clusters | NGC 1977 | ||
| Golden Harp Cluster | Open star cluster | NGC 1502 | ||
| Hole in a cluster | Open star cluster | NGC 6811 | ||
| Horseshoe Nebula | Diffuse fog | Messier 17, NGC 6618 | ||
| Ink spot | Dark cloud | Barnard 86 | ||
| Letter S cluster | Open star cluster | NGC 664 | ||
| Little Beehive | Open star cluster | Messier 41, NGC 2287 | ||
| Little Gem Nebula | Planetary nebula | NGC 6818 , PK 025-17.1 | ||
| Little Ghost Nebula | Planetary nebula | NGC 6369 , Hen 2-232, PK 002 + 05.1 | ||
| Lost Galaxy | Galaxy | NGC 4526 | ||
| Magic Carpet Nebula | Planetary nebula | NGC 7027 , PK 084-3.1 | ||
| Needle Galaxy | Galaxy | NGC 4565 | ||
| Opened box cluster | Open star cluster | NGC 2360 | ||
| Pazmino's cluster | Open star cluster | Floor 23 | ||
| Seagull Nebula | Diffuse fog | NGC 2029 + NGC 2032 + NGC 2035 + NGC 2040 / ESO 56-156 + ESO 56-160 + ESO 56-164 | ||
| Siamese Twins | Galaxy pair | NGC 4567 + NGC 4568 , PGC 42064 + LEDA 42069 | ||
| Skull nebula | Planetary nebula | NGC 246 , PK 118-74.1 | ||
| Snail Nebula | Planetary nebula | NGC 6543, PK 096 + 29.1 | ||
| Snowglobe Nebula | Planetary nebula | NGC 6781 , PK 041-02.1 | ||
| Spiral Planetary Nebula | Planetary nebula | NGC 5189 (IC 4274), Hen 2-94, GUM 47, PK 307-03.1 | ||
| Sunflower Galaxy | Galaxy | Messier 63 , NGC 5055 | ||
| Sunflower Nebula | Planetary nebula | NGC 6543, PK 096 + 29.1 | ||
| The eyes | Galaxy pair | NGC 4435 + NGC 4438 | ||
| The Rectangle | Galaxy | NGC 4449 | ||
| Tuft in the Tail of the Dog | Open star cluster | Collinder 140 | ||
| Twin jet nebula | Planetary nebula | M 2-9 | ||
| Veil Nebula | Supernova remnant | NGC 6960 + NGC 6974 + NGC 6979 + NGC 6992 + NGC 6995 + IC 1340 |
Designations derived from constellation names (selection)
In this section, some of the numerous objects are listed as a small selection, which have been given a name which is derived from the constellation in which they are located.
| Name (German) | Name (English) | Object type | Catalog numbers (extract) | Comment and individual proof |
|---|---|---|---|---|
|
Andromeda Nebula , Andromeda Galaxy |
Andromeda Galaxy | Galaxy | Messier 31, NGC 224, PGC 2557 | named after Andromeda (constellation) |
| Carina dwarf galaxy | Galaxy | named after Carina | ||
| Cassiopeia A | Cassiopeia A | Supernova remnant | SNR G111.7-2.1 | Radio source in the constellation Cassiopeia |
| Cassiopeia dwarf galaxy | Galaxy | Andromeda VII | ||
| Centaurus A | Centaurus A | Galaxy | NGC 5128, PGC 46957 | named after Centaurus |
| Cetus dwarf galaxy | Galaxy | |||
| Circinus Galaxy | Circinus Galaxy | Galaxy | LEDA 50779, ESO 97-13 | named after Circinus |
| Coma Berenices pile | Open star cluster | Melotte 111 | named after Coma Berenices | |
| Cygnus A | Cygnus A | Galaxy | Radio source in the constellation Swan | |
| Cygnus Loop | Cygnus Loop | Supernova remnant | NGC 6960 + NGC 6974 + NGC 6979 + NGC 6992 + NGC 6995 + IC 1340 | |
| Draco dwarf galaxy | Galaxy | |||
|
Triangle Nebula , Triangle Galaxy |
Triangulum Galaxy | Galaxy | Messier 33, NGC 598, PGC 5818 | named after triangle (constellation) |
| Orion Nebula | Orion nebula | Diffuse fog | Messier 42, NGC 1976 | |
| Hercules cluster | Hercules Cluster | Globular clusters | Messier 13, NGC 6205 | |
| Fornax A | Fornax A | Galaxy | Radio source in the constellation Fornax | |
| Fornax dwarf galaxy | Galaxy | |||
| Sagittarius cloud | Sagittarius Star Cloud | Messier 24 | ||
| Small Orion Nebula | Diffuse fog | Messier 43; NGC 1982 | ||
| Leo triplet | Leo triplet | Galaxy | M 66 group (Messier 66 + Messier 65), NGC 3623 + NGC 3627 + NGC 3628 | Leo (constellation) |
| Perseus A | Perseus A | Galaxy | NGC 1275 | |
| Pegasus dwarf galaxy | Galaxy | |||
| Phoenix dwarf galaxy | Galaxy | |||
| Pisces dwarf galaxy | Galaxy | LGS 3 | ||
| Sagittarius A | Sagittarius A | galactic center | Radio source in the constellation Sagittarius | |
| Sagittarius dwarf galaxy | Galaxy | |||
| Sculptor Galaxy | Sculptor Galaxy | Galaxy | NGC 253, PGC 2789 | Sculptor (constellation) |
| Sculptor dwarf galaxy | Galaxy | |||
| Sextans dwarf galaxy | Galaxy | |||
|
Triangulum Nebula , Triangulum Galaxy |
Triangulum Galaxy | Galaxy | Messier 33, NGC 598, PGC 5818 | named after Triangulum |
| Ursa major group , Ursa major cluster, Ursa major stream | Ursa Major Moving Group | Open star cluster | Collinder 285 | |
| Ursa Minor Dwarf Galaxy | Galaxy | |||
| Table of Scorpius | Open star cluster | NGC 6231 |
Designations derived from star names (selection)
In this section some objects are listed which have been given a name which is derived from a star or which were originally classified as a star and therefore received a Bayer or Flamsteed designation .
| Name (German) | Name (English) | Object type | Catalog numbers (extract) | Comment and individual proof |
|---|---|---|---|---|
| 47 Tucanae | 47 Tucanae | Globular clusters | NGC 104, Melotte 1 | Flamsteed name , originally classified as a star |
| Alpha Persei Movement Cluster | Alpha Persei Moving Cluster | Open star cluster | Melotte 20, Collinder 39 | |
| Eta Carinae Nebula | Eta Carina Nebula | Emission nebula | NGC 3372, Gum 33, RCW 53 | |
| Gamma Cygni Nebula | Gamma Cygni Nebula | Emission nebula | IC 1318 | |
| h Persei - Chi Persei - double clusters | Open star cluster | NGC 869 / NGC 884 | Bayer name , originally classified as a star | |
| Lambda Centauri Nebula | Running Chicken Nebula, Lambda Centauri Nebula | Emission Nebula and Open Star Clusters | IC 2948 | |
| Maja fog | Maia Nebula | Reflection fog | NGC 1432 | |
| Merope nebula | Merope Nebula | Reflection fog | NGC 1435 | |
| Omega Centauri | Omega Centauri | Globular clusters | NGC 5139 | Bayer name , originally classified as a star |
| Omicron Velorum Pile | Omicron Velorum Cluster | Open star cluster | IC 2391 | |
| κ crucis cluster | κ Crucis Cluster | Open star cluster | NGC 4755, Melotte 114 |
More astronomical lists
According to catalog
According to object type
Literature and films
- Michael Feiler, Philip Noack: Deep Sky Reiseatlas , Oculum-Verlag, ISBN 978-3938469712
- Mark A. Garlick, The Great Atlas of the Universe , 2006, Franckh-Kosmos-Verlag, ISBN 978-3-44010553-5
- Atlas of the Messier objects by Oculum-Verlag
- Deep Sky travel guide from Oculum-Verlag
- dtv atlas on astronomy
- Kosmos Sky Guide from Kosmos-Verlag
- Stars and Space - specialist journal for astronomy
- Interstellarum - Journal of Practical Astronomy
- Space Watch - TV show as part of Space Night from May 1998 to December 2003
Footnotes
- ^ A b Mark A. Garlick: The great atlas of the universe , 2006; Page 154
- ↑ Archived copy ( Memento of the original from May 14, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Pages 174 and 180
- ↑ [1]
- ↑ [2]
- ↑ [3]
- ↑ Kevin Krisciunas, Bill Yenne: Atlas of the Universe , 1992; Page 103
- ↑ a b c d e f g h i j k l m n Michael Feiler, Philip Noack: Deep Sky Reiseatlas , 2008; Chapter 2
- ↑ a b c d e f g Michael Feiler, Philip Noack: Deep Sky Reiseatlas , 2008; Chapter 7
- ↑ a b Michael Feiler, Philip Noack: Deep Sky Reiseatlas , 2008; Chapter 6
- ↑ a b c d e Michael Feiler, Philip Noack: Deep Sky Reiseatlas , 2008; Chapter 1
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 178
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 155
- ↑ a b c d e f g h i j Mark A. Garlick: The great atlas of the universe , 2006; Page 139
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 148
- ↑ a b c d e Michael Feiler, Philip Noack: Deep Sky Reiseatlas , 2008; Chapter 5
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Sky map page 209
- ^ A b c Mark A. Garlick: The great atlas of the universe , 2006; Page 176
- ^ A b Mark A. Garlick: The great atlas of the universe , 2006; Page 149
- ↑ Archived copy ( Memento of the original from May 14, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 183
- ^ A b Mark A. Garlick: The great atlas of the universe , 2006; Page 143
- ↑ [4]
- ^ A b Mark A. Garlick: The great atlas of the universe , 2006; Page 165
- ↑ a b Kevin Krisciunas, Bill Yenne: Atlas of the universe , 1992; page 6
- ^ A b Mark A. Garlick: The great atlas of the universe , 2006; Page 178 and sky map page 209
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 177
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Sky map page 208
- ↑ Michael Feiler, Philip Noack: Deep Sky Reiseatlas , 2008; Chapter 17
- ↑ a b c d e f g h i j k l Mark A. Garlick: The great atlas of the universe , 2006; Page 174
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 193
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Pages 174 and 178
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 169
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 167
- ↑ Michael Feiler, Philip Noack: Deep Sky Reiseatlas , 2008; Chapter 4
- ↑ [5]
- ^ Mark A. Garlick: The great atlas of the universe , 2006; Page 168