Discoveries 1 - 50
Suspected deep sky objects that are, to the best of my knowledge, unknown and undesignated. Most of these were stumbled upon on DSS images while compiling CSOG observing guides. A few asterisms, possibly open clusters and a single galaxy were seen during observing runs.
Before posting, I check multiple images (DSS, SDSS, DECaLS) to rule out artefacts. Once an object is determined to be real I check SIMBAD, NED, HyperLeda (for suspected galaxies), possible planetary nebulae, historical catalogs (for nebulae) and every available catalog in AstroPlanner.
The majority of these objects were reported on the Deep Sky Hunters group.
Whenever it is brought to my attention that an object that I suspected to be unknown / uncataloged / undesignated was indeed recognized before, I will remove it from my list and update the numbering accordingly.
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1
R.A. / Dec. - Constellation
23:32:24.7 +62°06'25" - Cassiopeia
Suspected nature of object
Emission nebula or planetary nebula
Description
A small nebula, approximately 80"×60". Two lobed, surrounding the carbon star DS Cassiopeia. Most prominent to the east-southeast of the star.
Not unlike the - much larger - planetary nebula Sharpless 2-174 - the "Valentine Rose Nebula" in Cepheus.
Date, plate or visually
14 January 2010, plate
2
R.A. / Dec. - Constellation
23:07:15 +60°52'54" - Cepheus
Suspected nature of object
Asterism or open cluster
Description
A small, curved pattern of stars, elongated north-northeast to south-southwest, approximately 2.5'×1.5'. I dub this "the Little Fishhook".
3' South-southwest is the double star Burnham 180 (WDS23072+6050).
Date, plate or visually
31 October 2010, visually
3
R.A. / Dec. - Constellation
05:52:25 -63°49'30" - Dorado
Suspected nature of object
Nebula? Galaxy?
Description
A small, irregular blob, approximately 30"×15". 10° North-northeast of the center of the Large Magellanic Cloud.
Date, plate or visually
2 January 2012, plate
4
R.A. / Dec. - Constellation
04:08:30 +62°27'38" - Camelopardalis
Suspected nature of object
Asterism - part of open cluster
Description
A detached part of the open cluster NGC1502, on the northeastern side, 8'×4'. When I observed this I first assumed it to be separate from the cluster, but this star pattern is a part of it. I dub this the "NGC1502 Stickman".
Date, plate or visually
16 March 2012, visually
5
R.A. / Dec. - Constellation
04:05:00 +62°26'30" - Camelopardalis
Suspected nature of object
Asterism or open cluster
Description
A scattered, moderately detached group, 13'.
20' East-southeast is the open cluster NGC1502.
Date, plate or visually
16 March 2012, plate
6
R.A. / Dec. - Constellation
18:16:24 -18°05'13" - Sagittarius
Nature of object
This was determined to be an open cluster in the Catalog of Newly Identified Star Clusters in GAIA DR2, FoF 935.
Description
A nice condensation of stars, 4', on the western edge of the dark nebula Barnard 93.
To the southwest is Barnard 92, 13' south-southeast is the open cluster Collinder 469.
Date, plate or visually
1 April 2012, plate
7
R.A. / Dec. - Constellation
05:27:07.5 -75°21'00.5" - Mensa
Suspected nature of object
Asterism or open cluster
Description
A small condensation of stars, approximately 50"×35". 5.5° South of the center of the Large Magellanic Cloud.
Date, plate or visually
22 January 2013, plate
8
R.A. / Dec. - Constellation
12:54:28 -09°33'40" - Virgo
Suspected nature of object
Reflection nebula
Description
Surrounding the mag. 4.8 star Psi Virginis, approximately 5'. Most prominent to the southeast of the star.
Not unlike the nebulosity surrounding the star 86 Virginis (nr. 61), almost 13° to the east-southeast.
13' West is the galaxy NGC4770.
Date, plate or visually
10 February 2013, plate
I was able to confirm this nebula in a crude image on 14 April 2015.
9
R.A. / Dec. - Constellation
09:27:48 +12°26'00" - Leo
Suspected nature of object
Asterism
Description
A large scattering of stars I dub "the Churchbell", 35'.
Date, plate or visually
13 February 2013, plate
10
R.A. / Dec. - Constellation
18:31:43 +04°25'50" - Serpens (Cauda)
Suspected nature of object
Asterism or open cluster
Description
An elongated group of stars, 5.5'×2.0' on the border of the constellations of Serpens (Cauda) and Ophiuchus.
5' West-southwest is the carbon star TY Ophiuchi.
Date, plate or visually
14 April, visually
11
R.A. / Dec. - Constellation
21:26:54 +43°27'40" - Cygnus
Suspected nature of object
Asterism or open cluster
Description
A scattered group of stars, centrally poor and richer in the western part, approximately 8.5'. 90" West-southwest of the center is the mag. 8.2 star SAO50856.
14' South is the double star h1646 (WDS21273+4315).
Date, plate or visually
4 August 2013, visually
12
R.A. / Dec. - Constellation
07:16:35 -24°36'11" - Canis Major
Suspected nature of object
Reflection nebula or dark nebula
Description
Elongated north-northeast to south-southwest, 4.0'×1.5'.
8' South-southeast is the galaxy PGC20564.
Date, plate or visually
14 September 2013, plate
13
R.A. / Dec. - Constellation
07:17:15.2 -24°31'15" - Canis Major
Suspected nature of object
Reflection nebula
Description
Extremely small and faint, 30"×20".
Date, plate or visually
14 September 2013, plate
14
R.A. / Dec. - Constellation
07:17:02.7 -24°21'24" - Canis Major
Suspected nature of object
Reflection nebula
Description
Extremely small and faint, 50"×35".
Date, plate or visually
14 september 2013, plate
15
R.A. / Dec. - Constellation
07:18:10 -23°57'35" - Canis Major
Suspected nature of object
Planetary nebula or reflection nebula
Description
Extremely faint, curved shape, 7'.
Date, plate or visually
14 September 2013, plate
16
R.A. / Dec. - Constellation
19:44:23 +23°35'05" - Vulpecula
Suspected nature of object
Reflection nebula
Description
Surrounding the mag. 12.6 star 4UCAC568-094537, 45"×30", most prominent to the southeast of the star.
Date, plate or visually
15 September 2013, plate
17
R.A. / Dec. - Constellation
19:45:01.3 +23°44'55" - Vulpecula
Suspected nature of object
Dark nebula
Description
Elongated north to south, 8.0'×0.5'.
Date, plate or visually
19 September 2013, plate
18
R.A. / Dec. - Constellation
19:46:26.2 +23°51'20" - Vulpecula
Suspected nature of object
Reflection nebula
Description
Elongated northeast to southwest, 100", surrounding the mag. 8.7 star SAO87699.
Date, plate or visually
19 September 2013, plate
19
R.A. / Dec. - Constellation
20:04:56 +34°00'40" - Cygnus
Suspected nature of object
Asterism or open cluster
Description
A scattered group, elongated northeast to southwest, 6.0'×3.5', with a pentagon shaped pattern of stars on the southwestern edge.
7' South-southwest is the open cluster Berkeley 84.
Date, plate or visually
27 September 2013, visually
20
R.A. / Dec. - Constellation
20:03:12 +31°59'00" - Cynus
Suspected nature of object
Asterism or open cluster
Description
A scattered group, 10'×8', surrounding the small open cluster Kronberger 54.
5' West-southwest is the mag. 6.5 star SAO69307.
Date, plate or visually
27 September 2013, visually
21
R.A. / Dec. - Constellation
23:19:48 +25°58'30" - Pegasus
Suspected nature of object
Asterism or open cluster
Description
A scattered group, 13'.
3' Northeast of the center is the galaxy MCG+04-55-000 (PGC71094), 5' east-northeast of the center is PGC71116, 9' northwest is MCG+04-55-002 (PGC71056).
Date, plate or visually
22 September 2014, visually
22
R.A. / Dec. - Constellation
23:11:00 +11°02'15" - Pegasus
Suspected nature of object
Asterism or open cluster
Description
A small, scattered group, elongated northeast to southwest, 4'×2'.
7' West-southwest is the galaxy NGC7500.
Date, plate or visually
9 november 2014, plate
23
R.A. / Dec. - Constellation
03:43:12 +39°12'00" - Perseus
Suspected nature of object
Dark nebulae
Description
Three small dark nebulae in a row, aligned east-southeast to west-northwest, approximately 8' in length.
Date, plate or visually
20 November 2014, plate
24
R.A. / Dec. - Constellation
03:42:06 +39°42'00" - Perseus
Suspected nature of object
Reflection nebula or dark nebula
Description
Extremely faint, irregular nebulosity in a northwest-southeast elongated, curved shape, 14'.
Best viewed in DSS2 Red - image color reversed.
Date, plate or visually
20 November 2014, plate
25
R.A. / Dec. - Constellation
03:45:30 +39°07'40" - Perseus
Suspected nature of object
Dark nebula(e) and/or emission nebula
Description
Two suspected small dark nebulae, approximately 3', aligned southwest to northeast. The southwestern nebula is the larger one, possibly an emission nebula.
Directly northeast of the northeastern nebula is the double star Milburn 16 (WDS03457+3908).
Date, plate or visually
20 November 2014, plate
26
R.A. / Dec. - Constellation
03:47:45 +39°47'00" - Perseus
Suspected nature of object
Dark nebula
Description
A very small, faint patch of nebulosity, 100"×70".
Date, plate or visually
20 November 2014, plate
27
R.A. / Dec. - Constellation
13:49:40 -30°53'00" - Centaurus
Suspected nature of object
Asterism or open cluster
Description
A small, poor and scattered group, moderately detached, 7'×5', approximately 25 stars.
8' West-northwest is the galaxy PGC86310.
Date, plate or visually
11 January 2015, plate
28
R.A. / Dec. - Constellation
18:40:31 -03°54'00" - Scutum
Suspected nature of object
Asterism or open cluster
Description
A small, north-northwest to south-southeast elongated group of stars of mag. 11.3 and fainter, 6'×'2'. On the border of the constellations of Scutum and Serpens (Cauda).
13' Southeast is the open cluster Dolidze 32.
Date, plate or visually
15 January 2015, plate
29
R.A. / Dec. - Constellation
20:04:04 +40°38'50" - Cygnus
Suspected nature of object
Asterism or open cluster
Description
Elongated northeast to southwest, 8'×'6. On the northwestern edge is the mag. 7.7 star SAO49141.
3' North-northeast is a group of stars designated TC 2004+4041. 20' East is the open cluster Cluster Dolidze-Dzimselejsvili 10.
Date, plate or visually
16 January 2015, plate
30
R.A. / Dec. - Constellation
16:28:46 +38°11'00" - Hercules
Suspected nature of object
Asterism or open cluster
Description
A scattered group, 14'. Northeast of the open cluster Dolidze-Dzimselejsvili 5.
Date, plate or visually
16 January 2015, plate
31
R.A. / Dec. - Constellation
08:59:31 +35°35'55" - Lynx
Suspected nature of object
Asterism or open cluster
Description
A scattered, north-south elongated group, 12'×9'.
12' Northeast are the galaxies NGC2719 & NGC2719A, 17' northwest is the double star Couteau 1897 (WDS08585+3548).
Date, plate or visually
13 April 2015, visually
32
R.A. / Dec. - Constellation
07:27:36 -18°29'40" - Puppis
Nature of object
This was determined to be an open cluster in the Catalog of Newly Identified Star Clusters in GAIA DR2, FoF 289.
Description
A small group, 5', surrounding the double star South 550 (WDS07276-1830). On the border of the constellations of Puppis & Canis Major.
Date, plate or visually
1 November 2015, plate
33
R.A. / Dec. - Constellation
12:29:08 -59°49'20" - Crux
Suspected nature of object
Asterism or open cluster
Description
A small group, 2'.
4' West is the open cluster Hogg 14.
Date, plate or visually
15 November 2015, plate
34
R.A. / Dec. - Constellation
02:24:38 +61°33'15" - Cassiopeia
Nature of object
This was determined to be an open cluster, at a distance of approximately 8800 light-years.
Description
A moderately detached group of faint stars, 5.5'×4.5'. Most prominently in POSS2 Red & IR, compared to Blue - old cluster?
7' East is the double star STF257 (WDS02257+6133).
Date, plate or visually
19 November 2015, plate
35
R.A. / Dec. - Constellation
16:14:54 -25°28'37" - Scorpius
Suspected nature of object
Reflection nebula
Description
Surrounding the double star Skiff 1313 (WDS16149-2529) is irregular nebulosity, approximately 3'. The position of this star + suspected nebula is 1.3° west of the nebula Cederblad 130 surrounding the star Sigma Scorpii, itself close to the Antares Nebula and Rho Ophiuchi complex.
Date, plate or visually
1 December 2015, plate
36
R.A. / Dec. - Constellation
19:13:46.5 +27°15'10" - Lyra
Suspected nature of object
Asterism or open cluster
Description
A scattered group, 4'.
4' North-northwest is the carbon star V553 Lyrae
Date, plate or visually
27 August 2017, visually
37
R.A. / Dec. - Constellation
05:02:48 +50°34'00" - Auriga
Suspected nature of object
Asterism or open cluster
Description
A scattered group, 5.5'×4.5'. On the northern edge is the mag. 8.5 star SAO24974.
7' East-northeast is the carbon star EL Aurigae.
Date, plate or visually
14 January 2018, visually
38
R.A. / Dec. - Constellation
05:58:13.2 +28°23'05" - Taurus
Suspected nature of object
Asterism or open cluster
Description
Elongated, 4'×2'.
5' North is the carbon star CGCS1118.
Date, plate or visually
5 February 2018, visually
39
R.A. / Dec. - Constellation
11:09:47 +61°23'30" - Ursa Major
Suspected nature of object
Asterism or open cluster
Description
A scattered group, 10'×8'.
4' West is the galaxy MCG+10-16-069 (PGC33801), 7' east-southeast is NGC3543.
Date, plate or visually
8 February 2018, visually
40
R.A. / Dec. - Constellation
00:16:07 +17°19'00" - Pisces
Suspected nature of object
Asterism or open cluster
Description
A scattered group, elongated north to south, 10'×8'.
8' East is the galaxy NGC57, 13' south-southeast is the double star Greaves 18 (WDS00159+1706)
Date, plate or visually
7 October 2018, visually
41
R.A. / Dec. - Constellation
14:23:41.1 +06°36'11.8" - Virgo
Suspected nature of object
Galaxy? Group of galaxies? Nebula?
Description
A very small and faint, irregular blob, 10"×6".
50" West of the galaxies PGC51413 & PGC51412 that are part of the galaxy group Holmberg 639, with the primary component NGC5599 3' to the southeast.
This object was investigated in April 2019 with the integral-field spectroscopic mode of the IMACS system on one of the Magellan telescopes in Chile. Initial results were inconclusive.
Date, plate or visually
4 December 2018, plate
42
R.A. / Dec. - Constellation
08:18:54 -29°45'00" - Puppis
Suspected nature of object
Reflection nebula
Description
Suspected extremely faint reflection nebula associated with open cluster NGC2571, most prominent to the southwest of cluster in a northwest to southeast elongated patch. Best viewed on POSS2 Blue plate.
Date, plate or visually
10 January 2019, plate
43
R.A. / Dec. - Constellation
11:25:11.4 -09°49'18.2" - Crater
Suspected nature of object
Galaxy? Nebula? Voorwerp?
Description
A very small and faint, irregular, undetermined blob, 17"×9".
3' Southeast of the galaxy NGC3672.
Date, plate or visually
24 January 2019, plate
44
R.A. / Dec. - Constellation
21:26:40 +46°49'00" - Cygnus
Suspected nature of object
Asterism
Description
Horseshoe shaped, 9 stars mag. 8.5 and greater, elongated northwest to southeast, 16'×13'.
Date, plate or visually
25 January 2019, plate
45
R.A. / Dec. - Constellation
03:10:16 +45°53'30" - Perseus
Suspected nature of object
Asterism or open cluster
Description
A small group, 6'×5'. On the north-northeastern edge is the mag. 7.3 star SAO38620.
7' Northwest is the carbon star V409 Persei.
Date, plate or visually
28 January 2019, visually
46
R.A. / Dec. - Constellation
01:23:20.6 +33°20'45" - Pisces
Suspected nature of object
Galaxy or multiple galaxies
Description
Irregular clumps of matter, 0.5'×0.4'.
7' Southeast is the galaxy NGC507 (part of Arp 229), 4' south-southwest is the mag. 7.7 star SAO54647 (mag. 7.7).
This may be previously recognised galaxy, or a radio source.
Date, plate or visually
4 April 2019, plate
47
R.A. / Dec. - Constellation
00:01:27.9 +31°31'22" - Pegasus
Suspected nature of object
Galaxy
Description
Elongated north to south, 0.4'×0.2'.
24" South is the galaxy 2MASS00012763+3130574, 5' south is the galaxy group Arp 112.
Date, plate or visually
5 April 2019, plate
48
R.A. / Dec. - Constellation
11:56:37.1 -19°31'12" - Corvus
Suspected nature of object
Galaxy? Nebula? Voorwerp?
Description
Approximately 0.5'×0.2' in size.
25" East is the mag. 15.2 star 4UCAC353-064078, 4' west-southwest is the galaxy MCG-03-31-002 (PGC37513) in the constellation of Crater.
Date, plate or visually
14 April 2019, plate
49
R.A. / Dec. - Constellation
23:42:52.2 +18°36'29.2" - Pegasus
Suspected nature of object
Galaxies
Description
Irregular galaxy, 80" southwest of nr. 50.
4' Northeast are the galaxies MCG+03-60-021 & MCG+03-60-022 (PGC72202 & PGC72203, Holmberg 815).
Date, plate or visually
15 April 2019, plate
50
R.A. / Dec. - Constellation
23:42:55.7 +18°37'29.6" - Pegasus
Suspected nature of object
Galaxies
Description
Irregular galaxy, 80" northeast of nr. 49.
3' Northeast are the galaxies MCG+03-60-021 & MCG+03-60-022 (PGC72202 & PGC72203, Holmberg 815).
Date, plate or visually
15 April 2019, plate