Herschel 400 Catalogue Explained

The Herschel 400 catalogue is a subset of William Herschel's original Catalogue of Nebulae and Clusters of Stars, selected by Brenda F. Guzman (Branchett), Lydel Guzman, Paul Jones, James Morris, Peggy Taylor and Sara Saey of the Ancient City Astronomy Club in St. Augustine, Florida, United States 1980. They decided to generate the list after reading a letter[1] published in Sky & Telescope by James Mullaney of Pittsburgh, Pennsylvania, United States.[2]

In this letter Mr. Mullaney suggested that William Herschel's original catalogue of 2,500 objects would be an excellent basis for deep sky object selection for amateur astronomers looking for a challenge after completing the Messier Catalogue.

The Herschel 400 is a subset of John Herschel's General Catalogue of Nebulae and Clusters published in 1864 of 5,000 objects, and hence also of the New General Catalogue.

The catalogue forms the basis of the Astronomical League's Herschel 400 club. In 1997, another subset of 400 Herschel objects was selected by the Rose City Astronomers of Portland, Oregon as the Herschel II list, which forms the basis of the Astronomical League's Herschel II Program.

Basic facts

Distribution of Herschel 400 objects

Herschel 400 objects that are also Messier objects

The Herschel 400 contains 17 objects that are part of the Messier catalogue:

Messier NGC Common name Notes
M20NGC 6514Trifid Nebula
M33NGC 598Triangulum Galaxy
M47NGC 2422
M48NGC 2548
M51bNGC 5195companion to the Whirlpool Galaxy
M61NGC 4303Swelling Spiral Galaxy
M76NGC 651Little Dumbbell Nebula,
Barbell Nebula (northern portion)
M82NGC 3034Cigar Galaxy
M91NGC 4548
M102?NGC 5866Spindle Galaxyuncertain Messier object designation
M104NGC 4594Sombrero Galaxy
M105NGC 3379
M106NGC 4258
M107NGC 6171Crucifix Cluster
M108NGC 3556Surfboard Galaxy
M109NGC 3992Vacuum Cleaner Galaxy
M110NGC 205

Herschel 400 objects that are also Caldwell objects

The Herschel 400 catalogue pre-dates the Caldwell catalogue by about 15 years. The Caldwell catalogue contains 44 objects that are members of the Herschel 400:[3]

Caldwell NGC Common name
C2NGC 40Bow-Tie Nebula
C6NGC 6543Cat's Eye Nebula
C7NGC 2403
C8NGC 559
C10NGC 663
C12NGC 6946Fireworks Galaxy
C13NGC 457Owl Cluster
C14NGC 869Double Cluster
C15NGC 6826Blinking Planetary
C16NGC 7243
C18NGC 185
C20NGC 7000North America Nebula
C21NGC 4449
C22NGC 7662Blue Snowball
C23NGC 891Silver Sliver Galaxy
C25NGC 2419
C28NGC 752
C29NGC 5005
C30NGC 7331
C32NGC 4631Whale Galaxy
C36NGC 4559
C37NGC 6885
C38NGC 4565Needle Galaxy
C39NGC 2392Eskimo Nebula,
Clown Face Nebula
C40NGC 3626
C42NGC 7006
C43NGC 7814
C44NGC 7479
C45NGC 5248
C47NGC 6934
C48NGC 2775
C50NGC 2244Satellite Cluster
C52NGC 4697
C53NGC 3115Spindle Galaxy
C54NGC 2506
C55NGC 7009Saturn Nebula
C56NGC 246Skull Nebula
C58NGC 2360Caroline's Cluster
C59NGC 3242Ghost of Jupiter
C60NGC 4038brighter of two Antennae Galaxies
C62NGC 247
C64NGC 2362Tau Canis Majoris Cluster
C65NGC 253Sculptor Galaxy,
Silver Coin Galaxy
C66NGC 5694

Number of objects by type in the Herschel 400

Type of object Number
of objects
Galaxies231
Globular clusters 34
Nebulae 6
Star clusters 99
Star clusters and nebulae 5
Planetary nebulae 24
1
Total 400

Number of Herschel 400 objects in each constellation

ConstellationNo. of objects
6
4
3
1
6
5
5
1
17
4
ConstellationNo. of objects
16
7
13
24
3
1
10
3
5
3
ConstellationNo. of objects
10
2
5
3
23
10
1
1
3
14
ConstellationNo. of objects
15
8
5
10
2
13
2
18
2
3
ConstellationNo. of objects
2
1
4
2
1
46
1
50
6

Herschel 400 objects

Key

1–100

Messier or
Caldwell ID		NGC numberCommon nameImageObject typeDistance (kly)ConstellationApparent magnitude
C2NGC 40Bow-Tie NebulaPlanetary Nebula3.5Cepheus11
–NGC 129 Open Cluster6.0Cassiopeia6.5
–NGC 136 Open Cluster18.6Cassiopeia11
–NGC 157 Galaxy75,000Cetus10.4
C18NGC 185 Galaxy2,300Cassiopeia9.2
M110NGC 205 Galaxy2,200Andromeda8
–NGC 225  Open Cluster2.1Cassiopeia7
C56NGC 246Skull NebulaPlanetary Nebula1.6Cetus8
C62NGC 247 Galaxy6,800Cetus8.9
C65NGC 253Sculptor Galaxy
Silver Coin Galaxy		Galaxy9,800Sculptor7.1
–NGC 278 Galaxy38,500Cassiopeia10.9
–NGC 288 Globular Cluster28.7Sculptor8.1
–NGC 381 Open Cluster3.8Cassiopeia9
–NGC 404 Galaxy10,000Andromeda10.1
–NGC 436 Open Cluster13.0Cassiopeia8.8
C13NGC 457ET Cluster
Owl Cluster		Open Cluster9Cassiopeia6.4
–NGC 488 Galaxy90,000Pisces10.3
–NGC 524 Galaxy90,000Pisces10.6
C8NGC 559 Open Cluster3.7Cassiopeia9.5
–NGC 584 Galaxy60,000Cetus10.4
–NGC 596 Galaxy65,000Cetus10.9
M33NGC 598Triangulum GalaxyGalaxy2,590Triangulum5.7
–NGC 613 Galaxy67,000Sculptor10
–NGC 615 Galaxy70,000Cetus11.5
–NGC 637 Open Cluster7Cassiopeia8.2
M76NGC 650/651Little Dumbbell Nebula
Cork Nebula		Planetary Nebula3.4Perseus12
–NGC 654 Open Cluster7.8Cassiopeia6.5
–NGC 659 Open Cluster8.2Cassiopeia7.9
C10NGC 663 Open Cluster7.2Cassiopeia7.1
–NGC 720 Galaxy80,000Cetus10.2
C28NGC 752 Open Cluster1Andromeda5.7
–NGC 772 Galaxy130,000Aries10.3
–NGC 779 Galaxy59,000Cetus11
C14NGC 869Η Persei of Double ClusterOpen Cluster7.3Perseus4
C14NGC 884χ Persei of Double ClusterOpen Cluster7.4Perseus4
C23NGC 891 Galaxy31,000Andromeda10
–NGC 908 Galaxy56,000Cetus10.2
–NGC 936 Galaxy60,000Cetus10.1
–NGC 1022 Galaxy65,000Cetus11.4
–NGC 1023 Galaxy30,000Perseus9.5
–NGC 1027 Open Cluster3.1Cassiopeia6.7
–NGC 1052 Galaxy63,000Cetus10.6
–NGC 1055 Galaxy52,000Cetus10.6
–NGC 1084 Galaxy65,000Eridanus10.6
–NGC 1245 Open Cluster9.8Perseus8.4
–NGC 1342 Open Cluster2.2Perseus6.7
–NGC 1407 Galaxy75,000Eridanus9.8
–NGC 1444 Open Cluster3.8Perseus6.6
–NGC 1501Oyster NebulaPlanetary Nebula5.8Camelopardalis13
–NGC 1502 Open Cluster2.7Camelopardalis5.7
–NGC 1513 Open Cluster4.9Perseus8.4
–NGC 1528 Open Cluster2.5Perseus6.4
–NGC 1535 Planetary Nebula6.5Eridanus10
–NGC 1545 Open Cluster2.3Perseus6.2
–NGC 1647 Open Cluster1.8Taurus6.4
–NGC 1664 Open Cluster3.9Auriga7.6
–NGC 1788 Nebula1.3Orion9.0
–NGC 1817 Open Cluster6.4Taurus7.7
–NGC 1857 Open Cluster4.5Auriga7
–NGC 1907 Open Cluster4.5Auriga8.2
–NGC 1931 Open Cluster and Nebula7Auriga11.3
–NGC 1961 Galaxy175,000Camelopardalis11.1
–NGC 1964 Galaxy65,000Lepus10.8
–NGC 1980 Open Cluster1.4Orion6
–NGC 1999 Nebula1.5Orion–
–NGC 2022 65pxPlanetary Nebula6.1Orion12
–NGC 2024Flame NebulaNebula0.9 – 1.5Orion10
–NGC 2126 Open Cluster4.4Auriga10
–NGC 2129 Open Cluster7.2Gemini6.7
–NGC 2158 Open Cluster11Gemini8.6
–NGC 216937 ClusterOpen Cluster3.6Orion5.9
–NGC 2185 Nebula2.9Monoceros–
–NGC 2186 Open Cluster7.3Orion8.7
–NGC 2194 Open Cluster10Orion8.5
–NGC 2204 Open Cluster8.6Canis Major8.6
–NGC 2215 Open Cluster3.1Monoceros8.4
–NGC 2232 Open Cluster1.3Monoceros3.9
C50NGC 2244Satellite ClusterOpen Cluster4.9Monoceros4.8
–NGC 2251 Open Cluster5.5Monoceros7.3
–NGC 2264Christmas Tree Cluster
Cone Nebula		Open Cluster and Nebula2.6Monoceros3.9
–NGC 2266 Open Cluster11Gemini10
–NGC 2281 Open Cluster1.8Auriga5.4
–NGC 2286 Open Cluster7.6Monoceros7.5
–NGC 2301 Open Cluster2.8Monoceros6
–NGC 2304 Open Cluster13.6Gemini10
–NGC 2311 Open Cluster7.4Monoceros10
–NGC 2324 Open Cluster17.2Monoceros8.4
–NGC 2335 Open Cluster5.6Monoceros7.2
–NGC 2343 Open Cluster3.7Monoceros6.7
–NGC 2353 Open Cluster4.1Monoceros7.1
–NGC 2354 Open Cluster4.3Canis Major6.5
–NGC 2355 Open Cluster5.4Gemini10
C58NGC 2360Caroline's ClusterOpen Cluster4Canis Major7.2
C64NGC 2362Tau Canis Majoris ClusterOpen Cluster and Nebula5.1Canis Major4.1
–NGC 2371/2372 Planetary Nebula4.4Gemini13
C39NGC 2392Eskimo Nebula
Clown Face Nebula		Planetary Nebula4Gemini10
–NGC 2395 AsterismN/AGemini8
C7NGC 2403 Galaxy14,000Camelopardalis8.4
C25NGC 2419 Globular Cluster275Lynx10.4

101–200

Messier or
Caldwell ID		NGC numberCommon nameImageObject typeDistance (kly)ConstellationApparent magnitude
–NGC 2420 Open Cluster–Gemini8.3
–NGC 2421 Open Cluster–Puppis8.3
M47NGC 2422 Open Cluster1.6Puppis4.4
–NGC 2423 Open Cluster–Puppis6.7
–NGC 2438 Planetary Nebula2.9Puppis10
–NGC 2440 Planetary Nebula4Puppis11
–NGC 2479 Open Cluster–Puppis10
–NGC 2482 Open Cluster–Puppis7.3
–NGC 2489 Open Cluster–Puppis7.9
C54NGC 2506 Open Cluster10Monoceros7.6
–NGC 2509 Open Cluster9.5Puppis9
–NGC 2527 Open Cluster–Puppis6.5
–NGC 2539 Open Cluster4.4Puppis6.5
M48NGC 2548 Open Cluster1.5Hydra5.8
–NGC 2567 Open Cluster–Puppis7.4
–NGC 2571 Open Cluster–Puppis7
–NGC 2613 Galaxy50,000Pyxis10.4
–NGC 2627 Open Cluster6.63Pyxis8
–NGC 2655 Galaxy63,000Camelopardalis10.1
–NGC 2681 Galaxy50,000Ursa Major10.3
–NGC 2683 Galaxy16,000Lynx9.7
–NGC 2742 Galaxy–Ursa Major11.7
–NGC 2768 Galaxy65,000Ursa Major10
C48NGC 2775 Galaxy55,000Cancer10.3
–NGC 2782 Galaxy70,000-110,000Lynx11.5
–NGC 2787 Galaxy25,000Ursa Major10.8
–NGC 2811 Galaxy–Hydra11.3
–NGC 2841 Galaxy31,000Ursa Major9.3
–NGC 2859 Galaxy23,000Leo Minor10.7
–NGC 2903 Galaxy20,500Leo8.9
–NGC 2950 Galaxy49,800Ursa Major11
–NGC 2964 Galaxy60,800Leo11.3
–NGC 2974 Galaxy89,000Sextans10.8
–NGC 2976 Galaxy12,000Ursa Major10.2
–NGC 2985 Galaxy70,100Ursa Major10.5
M82NGC 3034Cigar GalaxyGalaxy11,000Ursa Major8.4
–NGC 3077 Galaxy12,000Ursa Major9.9
–NGC 3079 Galaxy50,000Ursa Major10.6
C53NGC 3115Spindle GalaxyGalaxy22,000Sextans9.2
–NGC 3147 Galaxy130,000Draco10.7
–NGC 3166 Galaxy57,000-75,000Sextans10.6
–NGC 3169 Galaxy57,000-75,000Sextans10.5
–NGC 3184 Galaxy25,000Ursa Major9.8
–NGC 3190 Galaxy80,000Leo11
–NGC 3193 Galaxy80,000Leo10.9
–NGC 3198 Galaxy45,000Ursa Major10.4
–NGC 3226 Galaxy58,700Leo11.4
–NGC 3227 Galaxy58,700Leo10.8
C59NGC 3242Ghost of JupiterPlanetary Nebula1Hydra9
–NGC 3245 Galaxy–Leo Minor10.8
–NGC 3277 Galaxy–Leo Minor11.7
–NGC 3294 Galaxy–Leo Minor11.7
–NGC 3310 Galaxy50,000Ursa Major10.9
–NGC 3344 Galaxy22,500Leo Minor10
–NGC 3377 Galaxy35,000Leo10.2
M105NGC 3379 Galaxy38,000Leo9.3
–NGC 3384 Galaxy35,000Leo10
–NGC 3395 Galaxy–Leo Minor12.1
–NGC 3412 Galaxy–Leo10.6
–NGC 3414 Galaxy–Leo Minor10.8
–NGC 3432 Galaxy–Leo Minor11.3
–NGC 3486 Galaxy27,000Leo Minor10.3
–NGC 3489 Galaxy29,000Leo10.3
–NGC 3504 Galaxy–Leo Minor11.1
–NGC 3521 Galaxy30,000Leo8.9
M108NGC 3556 Galaxy45,000Ursa Major10.1
–NGC 3593 Galaxy20,000Leo11
–NGC 3607 Galaxy–Leo10
–NGC 3608 Galaxy–Leo11
–NGC 3610 Galaxy70,000Ursa Major10.8
–NGC 3613 Galaxy–Ursa Major12
–NGC 3619 Galaxy–Ursa Major13
–NGC 3621 Galaxy22,000Hydra10
C40NGC 3626 Galaxy86,000Leo10.9
–NGC 3628 Galaxy35,000Leo9.5
–NGC 3631 Galaxy35,000Ursa Major10.4
–NGC 3640 Galaxy75,400Leo10.3
–NGC 3655 Galaxy–Leo11.6
–NGC 3665 Galaxy85,600Ursa Major10.8
–NGC 3675 <---NGC3675 spiral galaxy in Schulman telescope--->Galaxy50,000Ursa Major11
–NGC 3686 Galaxy53,000Leo11.4
–NGC 3726 Galaxy45,000Ursa Major10.4
–NGC 3729 Galaxy65,700Ursa Major11.4
–NGC 3810 Galaxy51,200Leo10.8
–NGC 3813 Galaxy–Ursa Major11.7
–NGC 3877 Galaxy50,000Ursa Major12
–NGC 3893 Galaxy51,400Ursa Major11
–NGC 3898 Galaxy–Ursa Major10.8
–NGC 3900 Galaxy–Leo11.4
–NGC 3912 Galaxy–Leo13
–NGC 3938 Galaxy43,000Ursa Major10.4
–NGC 3941 Galaxy40,000Ursa Major11
–NGC 3945 Galaxy–Ursa Major10.6
–NGC 3949 Galaxy50,000Ursa Major11
–NGC 3953 Galaxy56,000Ursa Major10.1
–NGC 3962 Galaxy–Crater10.6
–NGC 3982 Galaxy67,000Ursa Major12
M109NGC 3992 Galaxy55,000Ursa Major9.8
–NGC 3998 Galaxy–Ursa Major10.6
–NGC 4026 Galaxy52,000Ursa Major12

201–300

Messier or
Caldwell ID		NGC numberCommon nameImageObject typeDistance (kly)ConstellationApparent magnitude
–NGC 4027 Galaxy68,000Corvus11.1
–NGC 4030 Galaxy75,000Virgo12
–NGC 4036 Galaxy62,000Ursa Major10.6
C60/C61NGC 4038/4039Antennae GalaxiesGalaxy83,000Corvus10.7
–NGC 4041 Galaxy70,000Ursa Major11.1
–NGC 4051 Galaxy45,000Ursa Major10.3
–NGC 4085 Galaxy50,000Ursa Major12.3
–NGC 4088 Galaxy50,000Ursa Major10.5
–NGC 4102 Galaxy69,000Ursa Major12
–NGC 4111 Galaxy45,000Canes Venatici10.8
–NGC 4143 Galaxy–Canes Venatici12
–NGC 4147 Globular Cluster60Coma Berenices10.3
–NGC 4150 Galaxy–Coma Berenices11.7
–NGC 4151 Galaxy62,000Canes Venatici10.4
–NGC 4179 Galaxy–Virgo10.9
–NGC 4203 Galaxy50,000Coma Berenices10.7
–NGC 4214 Galaxy10,000Canes Venatici9.7
–NGC 4216 Galaxy40,000Virgo10
–NGC 4245 Galaxy–Coma Berenices11.4
–NGC 4251 Galaxy–Coma Berenices12
M106NGC 4258 Galaxy25,000Canes Venatici8.3
–NGC 4261 Galaxy95,000Virgo10.3
–NGC 4273 Galaxy–Virgo11.9
–NGC 4274 Galaxy45,000Coma Berenices10.4
–NGC 4278 Galaxy55,100Coma Berenices10.2
–NGC 4281 Galaxy–Virgo11.3
–NGC 4293 Galaxy54,000Coma Berenices11
M61NGC 4303 Galaxy60,000Virgo9.7
–NGC 4314 Galaxy40,000Coma Berenices10.5
–NGC 4346 Galaxy–Canes Venatici12
–NGC 4350 Galaxy–Coma Berenices11.1
–NGC 4361 Planetary Nebula–Corvus10
–NGC 4365 Galaxy–Virgo11
–NGC 4371 Galaxy–Virgo10.8
–NGC 4394 Galaxy40,000Coma Berenices10.9
–NGC 4414 Galaxy62,000Coma Berenices10.3
–NGC 4419 Galaxy–Coma Berenices11.1
–NGC 4429 Galaxy55,000Virgo10.2
–NGC 4435The EyesGalaxy52,000Virgo10.9
–NGC 4438The EyesGalaxy52,000Virgo10.1
–NGC 4442 Galaxy–Virgo10.5
–NGC 4448 Galaxy45,000Coma Berenices11.1
C21NGC 4449 Galaxy10,000Canes Venatici9.4
–NGC 4450 Galaxy50,000Coma Berenices10.1
–NGC 4459 Galaxy50,000Coma Berenices10.4
–NGC 4473 Galaxy50,000Coma Berenices10.2
–NGC 4477 Galaxy55,000Coma Berenices10.4
–NGC 4478 Galaxy50,000Virgo11.2
–NGC 4485 Galaxy25,000Canes Venatici12
–NGC 4490 Galaxy25,000Canes Venatici9.8
–NGC 4494 Galaxy45,000Coma Berenices9.9
–NGC 4526 Galaxy108,000Virgo9.6
–NGC 4527 Galaxy50,000Virgo10.4
–NGC 4535 Galaxy55,000Virgo9.8
–NGC 4536 Galaxy55,000Virgo10.4
–NGC 4546 Galaxy45,600Virgo10.3
M91NGC 4548 Galaxy60,000Coma Berenices10.2
–NGC 4550 Galaxy50,000Virgo11.6
C36NGC 4559 Galaxy32,000Coma Berenices9.9
C38NGC 4565Needle GalaxyGalaxy42,000Coma Berenices9.6
–NGC 4570 Galaxy55,000Virgo10.9
M104NGC 4594Sombrero GalaxyGalaxy50,000Virgo8.3
–NGC 4596 Galaxy55,000Virgo10.5
–NGC 4618 Galaxy30,000Canes Venatici10.8
C32NGC 4631Whale GalaxyGalaxy22,000Canes Venatici9.3
–NGC 4636 Galaxy53,000Virgo9.6
–NGC 4643 Galaxy–Virgo10.6
–NGC 4654 Galaxy55,000Virgo10.5
–NGC 4656Hockey Stick GalaxyGalaxy30,000Canes Venatici10.4
–NGC 4660 Galaxy63,000Virgo11
–NGC 4665 Galaxy58,000Virgo12
–NGC 4666 Galaxy80,000Virgo10.8
–NGC 4689 Galaxy55,000Coma Berenices10.9
C52NGC 4697 Galaxy76,000Virgo9.3
–NGC 4698 Galaxy55,000Virgo10.7
–NGC 4699 Galaxy65,000Virgo9.6
–NGC 4725 Galaxy41,000Coma Berenices9.2
–NGC 4753 Galaxy60,000Virgo9.9
–NGC 4754 Galaxy55,000Virgo10.6
–NGC 4762 Galaxy60,000Virgo10.2
–NGC 4781 Galaxy–Virgo12
–NGC 4800 Galaxy95,000Canes Venatici12
–NGC 4845 Galaxy47,000Virgo12
–NGC 4856 Galaxy–Virgo10.4
–NGC 4866 Galaxy80,000Virgo11
–NGC 4900 Galaxy–Virgo11.5
–NGC 4958 Galaxy–Virgo10.5
–NGC 4995 Galaxy–Virgo11
C29NGC 5005 Galaxy69,000Canes Venatici9.8
–NGC 5033 Galaxy38,000-60,000Canes Venatici10.1
–NGC 5054 Galaxy–Virgo11
–NGC 5195Messier 51bGalaxy25,000Canes Venatici9.6
C45NGC 5248 Galaxy74,000Boötes10.2
–NGC 5273 Galaxy–Canes Venatici11.6
–NGC 5322 Galaxy80,000Ursa Major10
–NGC 5363 Galaxy63,600Virgo10.2
–NGC 5364 Galaxy55,000Virgo10.4
–NGC 5466 Globular Cluster52Boötes9.1
–NGC 5473 Galaxy–Ursa Major11.4
–NGC 5474 Galaxy21,000Ursa Major10.9

301–400

Messier or
Caldwell ID		NGC numberCommon nameImageObject typeDistance (kly)ConstellationApparent magnitude
–NGC 5557 Galaxy–Boötes11.1
–NGC 5566 Galaxy65,000Virgo10.5
–NGC 5576 Galaxy–Virgo10.9
–NGC 5631 Galaxy–Ursa Major13
–NGC 5634 Globular Cluster88Virgo9.6
–NGC 5676 Galaxy100,000Boötes10.9
–NGC 5689 Galaxy–Boötes11.9
C66NGC 5694 Globular Cluster113Hydra10.2
–NGC 5746 Galaxy95,000Virgo10.6
–NGC 5846 Galaxy93,000Virgo10.2
M102?NGC 5866Spindle GalaxyGalaxy50,000Draco10
–NGC 5897 Globular Cluster24Libra8.6
–NGC 5907 Galaxy55,000Draco10.4
–NGC 5982 Galaxy123,000Draco11.1
–NGC 6118 Galaxy83,000Serpens12
–NGC 6144 Globular Cluster–Scorpius9.1
M107NGC 6171 Globular Cluster20Ophiuchus8.1
–NGC 6207 Galaxy30,000Hercules11.6
–NGC 6217 Galaxy67,000Ursa Minor11.2
–NGC 6229 Globular Cluster100Hercules9.4
–NGC 6235 Globular Cluster–Ophiuchus10.2
–NGC 6284 Globular Cluster50Ophiuchus9
–NGC 6287 Globular Cluster30Ophiuchus9.2
–NGC 6293 Globular Cluster31-52Ophiuchus8.2
–NGC 6304 Globular Cluster19Ophiuchus8.4
–NGC 6316 Globular Cluster35Ophiuchus9
–NGC 6342 Globular Cluster28Ophiuchus9.9
–NGC 6355 Globular Cluster31Ophiuchus9.6
–NGC 6356 Globular Cluster50Ophiuchus8.4
–NGC 6369Little Ghost NebulaPlanetary Nebula2Ophiuchus13
–NGC 6401 Globular Cluster24Ophiuchus9.5
–NGC 6426 Globular Cluster67Ophiuchus11.2
–NGC 6440 Globular Cluster28Sagittarius9.7
–NGC 6445Box NebulaPlanetary Nebula–Sagittarius13
–NGC 6451 Open Cluster–Scorpius8
M20NGC 6514Trifid NebulaOpen Cluster and Nebula2Sagittarius6.3
–NGC 6517 Globular Cluster–Ophiuchus10.3
–NGC 6520 Open Cluster–Sagittarius8
–NGC 6522 Globular Cluster25Sagittarius8.6
–NGC 6528 Globular Cluster26Sagittarius9.5
–NGC 6540 Open Cluster17Sagittarius9.3
C6NGC 6543Cat's Eye NebulaPlanetary Nebula3Draco9
–NGC 6544 Globular Cluster10Sagittarius8.3
–NGC 6553 Globular Cluster20Sagittarius8.3
–NGC 6568 Open Cluster–Sagittarius9
–NGC 6569 Globular Cluster35Sagittarius8.7
–NGC 6583 Open Cluster–Sagittarius10
–NGC 6624 Globular Cluster26Sagittarius8.3
–NGC 6629 Planetary Nebula–Sagittarius12
–NGC 6633 Open Cluster1Ophiuchus4.6
–NGC 6638 Globular Cluster–Sagittarius9.2
–NGC 6642 Globular Cluster26Sagittarius8.8
–NGC 6645 Open Cluster–Sagittarius9
–NGC 6664 Open Cluster–Scutum7.8
–NGC 6712 Globular Cluster22.5Scutum8.2
–NGC 6755 Open Cluster4.6Aquila7.5
–NGC 6756 Open Cluster6.3Aquila11
–NGC 6781 Planetary Nebula–Aquila12
–NGC 6802 Open Cluster–Vulpecula8.8
–NGC 6818Little Gem NebulaPlanetary Nebula–Sagittarius10
–NGC 6823 Open Cluster6Vulpecula7.1
C15NGC 6826Blinking PlanetaryPlanetary Nebula2.2Cygnus10
–NGC 6830 Open Cluster–Vulpecula7.9
–NGC 6834 Open Cluster7Cygnus7.8
–NGC 6866 Open Cluster3.9Cygnus7.6
–NGC 6882 Open Cluster–Vulpecula8.1
C37NGC 6885 Open Cluster2Vulpecula6
–NGC 6905Blue Flash NebulaPlanetary Nebula7.5Delphinus12
–NGC 6910 Open Cluster–Cygnus7.4
C47NGC 6934 Globular Cluster57Delphinus8.9
–NGC 6939 Open Cluster3.9Cepheus7.8
–NGC 6940 Open Cluster2.5Vulpecula6.3
C12NGC 6946Fireworks GalaxyGalaxy18,000Cepheus8.9
C20NGC 7000North America NebulaNebula2Cygnus–
C42NGC 7006 Globular Cluster135Delphinus10.6
–NGC 7008Fetus NebulaPlanetary Nebula3Cygnus13
C55NGC 7009Saturn NebulaPlanetary Nebula1.4Aquarius8
–NGC 7044 Open Cluster–Cygnus11
–NGC 7062 Open Cluster–Cygnus8.3
–NGC 7086 Open Cluster–Cygnus8.4
–NGC 7128 Open Cluster–Cygnus9.7
–NGC 7142 Open Cluster6.2Cepheus9.3
–NGC 7160 Open Cluster–Cepheus6.1
–NGC 7209 Open Cluster3.8Lacerta6.7
–NGC 7217 Galaxy50,000Pegasus10.2
C16NGC 7243 Open Cluster3Lacerta6.4
–NGC 7296  Open Cluster–Lacerta10
C30NGC 7331 Galaxy47,000Pegasus9.5
–NGC 7380Wizard NebulaOpen Cluster and Nebula7.2Cepheus7.2
–NGC 7448 Galaxy79,500Pegasus11.7
C44NGC 7479 Galaxy106,000Pegasus11
–NGC 7510 Open Cluster11Cepheus7.9
–NGC 7606 Galaxy98,500Aquarius10.8
C22NGC 7662Blue SnowballPlanetary Nebula3.2Andromeda9
–NGC 7686 Open Cluster–Andromeda5.6
–NGC 7723 Galaxy91,500Aquarius11.1
–NGC 7727 Galaxy76,000Aquarius10.7
–NGC 7789Caroline's RoseOpen Cluster7.6Cassiopeia6.7
–NGC 7790 Open Cluster11Cassiopeia8.5
C43NGC 7814 Galaxy49,000Pegasus10.5

See also

External links

Notes and References

  1. Mullaney . James . Letter to Sky & Telescope . 235 . . April 1976 . https://web.archive.org/web/20071001004725/https://pqasb.pqarchiver.com/skyandtelescope/access/887262721.html?dids=887262721&FMT=CITE&FMTS=CITE&date=Apr+1976&author=James+Mullaney&desc=Letter . dead . 2007-10-01 . 2006-08-24 . subscription required.
  2. Web site: Herschel 400 Club . 2006-08-24 . The Astronomical League.
  3. Book: O'Meara, Stephen James . The Caldwell Objects . . 2002 . 0-521-82796-5.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Herschel 400 Catalogue".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.