Discoveries 76 - 100
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 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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76
R.A. / Dec. - Constellation
19:04:24 +25°49'00" - Lyra
Suspected nature of object
Nebula(e) or supernova remnant
Description
Two extremely faint lobes of nebulosity, separated by 12'.
Approximately 12 and 22 minutes of arc, respectively, east of the position of Sharpless 2-85 (which was a suspected plate fault).
The northwestern lobe has a slightly curved shape, is approximately 10'×3' in size and tapers towards the northeast. The southeastern lobe is approximately 3'×1' in size and is oval shaped.
Date, plate or visually
30 December 2021, plate
77
R.A. / Dec. - Constellation
19:49:01.5 +20°09'35" - Vulpecula
Suspected nature of object
Asterism or open cluster
Description
A small group of stars that is not well detached from the surrounding starfield, approximately 3' in size. Brightest star on the northeastern edge is mag. 11.3. The position is 3' northeast of the star that is designated Kohoutek 4-35 (PK 057+02.1).
The results of the Gaia EDR3 analysis by Bruno Alessi were ambiguous; this is more likely to be an asterism than an open cluster.
Date, plate or visually
13 January 2022, plate
78
R.A. / Dec. - Constellation
08:21:26.5 +03°13'00" - Hydra
Suspected nature of object
Asterism or open cluster
Description
A detached group of mag. 12 and fainter stars, 3' north of the galaxy IC2327. Approximately 4'×3' in size. A curved branch of stars is visible directly north-northwest of the group, curving towards the northwest.
Date, plate or visually
25 February 2022, visually
79
R.A. / Dec. - Constellation
21:31:27 +52°37'12" - Cygnus
Suspected nature of object
Reflection nebula
Description
Faint nebulosity surrounding the star SAO33497, component A of the double star Argyle 88 (WDS21315+5237).
Date, plate or visually
5 July 2022, plate
15' DSS POSS2 Blue - 1989
80
R.A. / Dec. - Constellation
21:21:53.5 +52°10'50" - Cygnus
Suspected nature of object
Open cluster
Description
A suspected open cluster involved in the HII region that is listed as No. 6 in the appendix of Kohoutek's 1972 paper 1972A&A….16..291K.
What Kohoutek described as a nebulous nucleus are in fact stars.
Date, plate or visually
6 July 2022, plate
81
R.A. / Dec. - Constellation
17:56:24.7 +18°20'32" - Hercules
Suspected nature of object
Galaxy
Description
A very small and faint galaxy, approximately 2'×1.5' in size. 53 Seconds of arc north of the mag. 7.4 star SAO103327 that is the primary component of the double star STF2245 (WDS17564+1820). Just over 2 minutes of arc to the east-southeast is the galaxy PGC1556550, 5.5 minutes of arc west-northwest is the galaxy pair KPG 526 (NGC6500 & NGC6501).
Date, plate or visually
11 July 2022, plate
82
R.A. / Dec. - Constellation
06:11:52.6 -06°28'36" - Monoceros
Suspected nature of object
Reflection nebula
Description
A relatively bright nebula, surrounding the mag. 9.3 star SAO132945, approximately 1.5'×1.0' in size. 4.5' North of the mag. 5 star SAO132944.
Date, plate or visually
13 July 2022, plate
83
R.A. / Dec. - Constellation
06:10:14.6 -06°27'31" - Monoceros
Suspected nature of object
Reflection nebula
Description
Very small and faint, directly north of the mag. 13.3 star 4UCAC418-012700.
Date, plate or visually
13 July 2022, plate
84
R.A. / Dec. - Constellation
06:12:43.7 -06°15'26" - Monoceros
Suspected nature of object
Nebula or galaxy
Description
An extremely small and very faint, irregular blob.
Date, plate or visually
13 July 2022, plate
85
R.A. / Dec. - Constellation
06:13:37.3 -06°25'02" - Monoceros
Suspected nature of object
Reflection nebula
Description
Extremely small and faint, directly west of the mag. 12.2 star 4UCAC418-013046.
Date, plate or visually
13 July 2022, plate
86
R.A. / Dec. - Constellation
06:14:27.6 -06°21'37" - Monoceros
Suspected nature of object
Reflection nebula
Description
A small wisp to the south-southeast of the mag. 12 star 4UCAC419-012601, best viewed in PanSTARRS.
Date, plate or visually
13 July 2022, plate
87
R.A. / Dec. - Constellation
06:08:42.3 -06°57'43" - Monoceros
Suspected nature of object
Emission nebula
Description
Two lobed and extremely faint, east and west of two faint stars aligned north-northwest to south-southeast, brighter surrounding the north-northwestern star. Best viewed in PanSTARRS.
Date, plate or visually
13 July 2022, plate
88
R.A. / Dec. - Constellation
06:08:25.7 -06°57'36" - Monoceros
Suspected nature of object
Emission nebula
Description
An extremely faint, north-south elongated wisp. Best viewed in PanSTARRS. 45" West is a star involved in nebulosity, to the east is a small and faint, detached patch.
Date, plate or visually
13 July 2022, plate
89
R.A. / Dec. - Constellation
06:11:58 -05°56'53" - Monoceros
Suspected nature of object
Reflection nebula
Description
South and southeast of the mag. 11.6 star TYC4795-0777-1.
Date, plate or visually
13 July, plate
90
R.A. / Dec. - Constellation
06:59:46.8 -07°38'13" - Monoceros
Suspected nature of object
Reflection nebula
Description
Surrounding the mag. 13.5 star 4UCAC412-022324.
Date, plate or visually
13 July 2022, plate
91A & B
R.A. / Dec. - Constellation
20:19:11 +37°23'45" - Cygnus
Suspected nature of object
Emission and/or reflection nebulae
Description
Two nebulae aligned southwest to northeast, separated by one minute of arc.
Date, plate or visually
18 July 2022, plate
92
R.A. / Dec. - Constellation
23:05:16 +60°05'15" - Cepheus
Suspected nature of object
Emission and/or reflection nebula
Description
Approximately 0.3 minutes of arc in size. On the southern edge is the mag. 16 star 4UCAC751-078693. The stars directly south thereof are involved in faint nebulosity, too.
Date, plate or visually
20 July 2022, plate
93
R.A. / Dec. - Constellation
23:05:22.6 +60°05'34" - Cepheus
Suspected nature of object
Emission and or reflection nebula
Description
A very small nebula that involves the mag. 16 star 4UCAC751-078718. The surrounding stars, visible in the PanSTARRS image, may form a small cluster.
Date, plate or visually
20 July 2022, plate
94
R.A. / Dec. - Constellation
00:08:14 +65°40'13" - Cassiopeia
Suspected nature of object
Reflection nebula
Description
Very small and faint, directly north of the mag. 12.5 star 4UCAC779-000269.
Date, plate or visually
22 July 2022, plate
95
R.A. / Dec. - Constellation
06:14:47.2 +12°19'37" - Orion
Suspected nature of object
Emission nebula and open cluster
Description
Surrounding the mag. 15.5 star 4UCAC512-020909 that is
87" north of the mag. 8.6 star SAO95436 and 2' southwest of the emission nebula Sharpless 2-271.
As is evident on the PanSTARRS image (15'), the sprinkling of stars involved in Sharpless 2-271 forms a cluster (Bica, Dutra, Soares 82). A similar, although smaller concentration of stars can be seen surrounding the star 4UCAC512-020909.
Date, plate or visually
24 July 2022, plate
96
R.A. / Dec. - Constellation
03:56:22.4 +88°29'41" - Ursa Minor
Suspected nature of object
Reflection nebula
Description
An extremely faint, elongated glow close to the mag. 8.7 star SAO552.
The images below, as download from the DSS server and greatly increased in brightness, do not match in orientation.
Date, plate or visually
29 July 2022, plate
15' Blue - 1952
15' Blue - 1997
15' Blue - 1998
15' Red - 1998
97
R.A. / Dec. - Constellation
04:01:41 +68°50'45" - Camelopardalis
Suspected nature of object
Emission and/or reflection nebula
Description
A nebula surrounding the mag. 8 K0 star SAO12986, most prominent to the west of the star. Approximately 1.5' in size.
Date, plate or visually
5 October 2022, plate
15' Blue
15' Red
98
R.A. / Dec. - Constellation
04:20:03 +53°36'45" - Camelopardalis
Suspected nature of object
Emission nebula
Description
A very faint, elongated, irregular nebula. Approximately 3' in size.
On the 1990 POSS2 Red image there is an image artefact 6' west-southwest of the position.
Date, plate or visually
6 October 2022, plate
99
R.A. / Dec. - Constellation
07:17:07.4 +13°49'21" - Gemini
Suspected nature of object
Galaxy
Description
A very small, elongated galaxy. 5' North-northeast of the middle of the open cluster NGC2355.
Date, plate or visually
18 October 2022, plate
100
R.A. / Dec. - Constellation
03:37:40.1 +31°48'37" - Perseus
Suspected nature of object
Galaxy
Description
A very small, elongated galaxy. On the west-southwestern edge of the large and faint emission nebula McDonald 34 that involves the dark nebula Barnard 3.
Date, plate or visually
21 October 2022, plate
