Discoveries 351 and further
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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385
R.A. / Dec. - Constellation
00:09:24 +58°40'15" - Cassiopeia
Suspected nature of object
Reflection nebula
Description
A relatively large and bright, north-south elongated nebula involving the mag. 7.9 B9 star SAO21137.
11' West-southwest of the reflection nebula Lynds 578.
Date, plate or visually
15 June 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
384
R.A. / Dec. - Constellation
00:06:55.9 +65°37'18.1" - Cassiopeia
Suspected nature of object
Reflection nebula
Description
A very small, extremely faint nebula surrounding the mag. 13.9 star 4UCAC779-000245.
2.5' Southwest of the reflection nebula Struve-Straka 1 and the Herbig-Haro object Parsamian-Petrosyan 1.
Date, plate or visually
14 June 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
383
R.A. / Dec. - Constellation
22:13:35.9 +61°28'35.0" - Cepheus
Suspected nature of object
Reflection nebula
Description
A small nebula directly west of the mag. 11.4 star TYC4263-00128-1.
8' West-northwest of the reflection nebula Struve-Straka 64.
Date, plate or visually
9 June 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
382
R.A. / Dec. - Constellation
14:28:15.4 -02°13'27.6" - Virgo
Suspected nature of object
Galaxy
Description
A very small, faint, north-northwest to south-southeast elongated galaxy, approximately 0.3'×0,1' in size, 50" east-northeast of the mag. 4.9 double star Phi Virginis (STF1846 - WDS14282-0214).
Date, plate or visually
24 April 2025, plate
10' POSS2 Blue - 1
10' POSS2 Blue - 1
10' POSS1 Blue
381
R.A. / Dec. - Constellation
18:10:41.4 -17°36'51.2" - Sagittarius
Suspected nature of object
Reflection nebula
Description
A very small and faint nebula fanning out northwards from the mag. 13.9 star 4UCAC362-130131.
Date, plate or visually
15 April 2025, plate
10' POSS2 Blue
10' PanSTARRS
380
R.A. / Dec. - Constellation
18:12:21.8 -21°03'46.4" - Sagittarius
Suspected nature of object
Reflection nebula
Description
A small, fan-shaped nebula surrounding the mag. 14.1 star 4UCAC345-133000.
Date, plate or visually
14 April 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
379
R.A. / Dec. - Constellation
16:23:32.3 -25°23'48.6" - Scorpius
Suspected nature of object
Reflection nebula
Description
A very small and faint nebula surrounding the mag. 11.7 star TYC6798-00035-1.
Date, plate or visually
4 April 2025, plate
10' POSS2 Blue - 1976
10' POSS2 Blue - 1978
378
R.A. / Dec. - Constellation
16:24:59.1 -25°21'17.6" - Scorpius
Suspected nature of object
Reflection nebula
Description
A small and faint nebula surrounding the mag 8.5 A0 star SAO184372.
Possibly the star intended to be identified as associated with the reflection nebula Struve-Straka 56, that was perhaps incorrectly cataloged as associated with the star HD147702 (SAO184364, 22' to the south-southwest).
Date, plate or visually
4 April 2025, plate
10' POSS2 Blue
10' POSS1 Blue
377
R.A. / Dec. - Constellation
16:03:27 -49°23'43" - Norma
Suspected nature of object
Reflection nebula
Description
A very faint cometary nebula, elongated southwest to northeast, approximately 2'×1' in size.
10' South-southeast of the star Eta Normae.
Date, plate or visually
30 March 2025, plate
10' POSS2 Blue
10' POSS2 Red
10' DECaPS DR2
376
R.A. / Dec. - Constellation
14:17:31.8 -52°11'45.2" - Centaurus
Suspected nature of object
Reflection nebula
Description
A very faint, irregular nebula surrounding the mag. 11.3 star TYC8289-00849-1.
Date, plate or visually
30 March 2025, plate
10' POSS2 Blue
10' DECaPS DR2
375
R.A. / Dec. - Constellation
16:49:15.3 -14°22'09.0" - Ophiuchus
Suspected nature of object
Nebula
Description
A semi-circular nebula directly east of the variable star V1121 Ophiuchi (mag. 11.2-12.2). Involved in the dark nebula Lynds 152.
Date, plate or visually
26 March 2025, plate
10' POSS2 Blue
10' POSS2 Red
10' PanSTARRS
374
R.A. / Dec. - Constellation
20:01:37.6 +24°33'31.0" - Vulpecula
Suspected nature of object
Reflection nebula
Description
A small nebula that fans out directly south of the mag. 9.2 star TYC2145-00688-1.
Date, plate or visually
23 March 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
373
R.A. / Dec. - Constellation
19:29:52.8 +22°42'24" - Vulpecula
Suspected nature of object
Nebula
Description
A relatively bright nebula surrounding the mag. 7.1 K2 star SAO87278.
Date, plate or visually
22 March 2025, plate
10' POSS2 Blue
10' POSS2 Red
10' PanSTARRS
372
R.A. / Dec. - Constellation
18:37:25 -00°21'30" - Serpens (Cauda)
Suspected nature of object
Dark nebula
Description
A tadpole-shaped dark nebula, 4' southwest of the mag. 5.8 A0 star SAO142444.
Date, plate or visually
22 March 2025, plate
15' POSS2 Blue
15' POSS2 Red
371
R.A. / Dec. - Constellation
18:36:22.1 -00°13'44.9" - Serpens (Cauda)
Suspected nature of object
Reflection nebula
Description
A small nebula surrounding the mag. 12.6 star 4UCAC449-081261.
Date, plate or visually
22 March 2025, plate
10' POSS1 Blue
10' POSS2 Blue
10' PanSTARRS
370
R.A. / Dec. - Constellation
18:56:54 +09°31'00" - Aquila
Suspected nature of object
Reflection nebula
Description
An irregular nebula north of the mag. 8.6 A2 star SAO124084.
Date, plate or visually
22 March 2025, plate
10' POSS1 Blue
10' POSS2 Blue
10' PanSTARRS
369
R.A. / Dec. - Constellation
18:29:32.6 -00°13'23.5" - Serpens (Cauda)
Suspected nature of object
Reflection nebula
Description
Surrounding the mag. 11.1 star TYC5099-00024-1.
Date, plate or visually
22 March 2025, plate
10' POSS1 Blue
10' POSS2 Blue
10' PanSTARRS
368
R.A. / Dec. - Constellation
18:29:31.7 +01°08'20.5" - Serpens (Cauda)
Suspected nature of object
Reflection nebula
Description
Surrounding the stars TYC0433-00254-1 (mag. 11.3, west-southwest) and 4UCAC456-079488 (mag. 11.9, east-northeast), aligned west-southwest to east-northeast and separated by 25".
9' Southwest of the reflection nebula Bernes 12 (the "Serpens Reflection Nebula") and 11' Northeast of the reflection nebula Bernes 11.
Date, plate or visually
22 March 2025, plate
10' POSS1 Blue
10' POSS2 Blue
10' PanSTARRS
367
R.A. / Dec. - Constellation
06:19:01.6 +20°35'00.5" - Orion
Suspected nature of object
Reflection nebula
Description
A small and faint nebula surrounding the mag. 11.9 star 4UCAC553-024731. 4' West-northwest of the reflection nebula Sazhen 14.
Date, plate or visually
17 March 2025, plate
10' POSS2 Blue
10' PanSTARRS
366
R.A. / Dec. - Constellation
20:56:29.8 +65°30'32.0" - Cepheus
Suspected nature of object
Galaxy
Description
A small and faint spiral galaxy, approximately 0.7' in size.
Date, plate or visually
16 March 2025, plate
10' POSS2 Blue
10' POSS2 Red
365
R.A. / Dec. - Constellation
09:11:47.9 -45°26'53.2" - Vela
Suspected nature of object
Reflection nebula
Description
A very small and faint, north south-elongated nebula surrouding the mag. 10.9 star TYC8166-00975-1.
North-northwest of the reflection nebula Van den Bergh-Herbst 29B & C and north of Van den Bergh-Herbst 29A.
Date, plate or visually
13 March 2025, plate
10' POSS2 Blue
10' DECaPS2
364
R.A. / Dec. - Constellation
16:04:37 -37°50'15" - Lupus
Suspected nature of object
Reflection nebula
Description
A relatively large and bright nebula, elongated north to south and approximately 10'×8' in size, with filamentary wisps in the northern part.
The stars that are (visually) involved form the asterism Streicher 83.
In the background is the galaxy PGC4615984.
Date, plate or visually
12 March 2025, plate
20' POSS2 Blue - 1
20' POSS2 Blue - 2
20' DECaPS2 - 1
20' DECaPS2 - 2
363
R.A. / Dec. - Constellation
19:04:44.4 -36°50'40.3" - Corona Australis
Suspected nature of object
Reflection nebula
Description
A faint and irregular, east-west elongated nebula directly south of the mag. 8.2 A0 star SAO210888.
Date, plate or visually
11 March 2025, plate
10' POSS2 Blue - 1974
10' POSS2 Blue - 1977
362
R.A. / Dec. - Constellation
05:39:02.8 +34°59'36.5" - Auriga
Suspected nature of object
Reflection nebula
Description
A relatively bright nebula surounding several stars, the brightest of which is 4UCAC625-025815 (mag. 12.7) in the northwestern part of the nebula. Fainter nebulosity fans out towards the southwest.
24' Northeast of the emission nebula Simeis 142.
Date, plate or visually
7 March 2025, plate
10' POSS1 Blue
10' POSS1 Blue
10' PanSTARRS
361
R.A. / Dec. - Constellation
05:59:55.6 +32°06'44.0" - Auriga
Suspected nature of object
Nebula
Description
A very small and faint nebula southeast of the mag. 11.7 star TYC2410-01712-1.
2' West-northwest of the nebula Gyulbudaghian-Magakian 3-6 and 11' northwest of the nebula Struve-Straka 48.
Date, plate or visually
15 February 2025, plate
10' POSS2 Blue
10' POSS2 Red
10' PanSTARRS
360
R.A. / Dec. - Constellation
05:37:43.6 +31°50'45.3" - Auriga
Suspected nature of object
Reflection nebula
Description
A faint and irregular, northeast-southwest elongated nebula surrounding the mag. 12.4 star 4UCAC610-022208. Approximately 1.0'×0.5' in size.
8.5' South of the reflection nebula NGC1985 and 13' west of the reflection nebula Van den Bergh 45.
Date, plate or visually
9 February 2025, plate
15' POSS2 Blue
15' POSS1 Blue
359
R.A. / Dec. - Constellation
05:46:52.5 +25°03'47.0" - Taurus
Suspected nature of object
Nebula
Description
Irregular nebulous wisps, 25" northeast of the galaxy CAP 0543+25.
Date, plate or visually
31 December 2024, plate
10' POSS2 Blue
10' POSS2 Red
10' POSS2 IR
10' PanSTARRS
358
R.A. / Dec. - Constellation
22:10:41 +55°33'45" - Cepheus
Suspected nature of object
Nebula
Description
A faint, irregular, wasp-tailed nebula, elongated northwest to southeast. 7' Northwest of the planetary nebula PN G101.5-00.6 and 10' north of the open cluster NGC7226.
Date, plate or visually
9 November 2024, plate
15' POSS2 Blue
15' POSS2 Red
15' PanSTARRS
357
R.A. / Dec. - Constellation
04:52:31 +07°42'00" - Orion
Suspected nature of object
?
Description
A group of nebulous wisps, approximately 15' in size.
Date, plate or visually
25 October 2024, plate
30' POSS2 Red
30' DESI Legacy DR10
356
R.A. / Dec. - Constellation
01:34:32.2 -50°34'18.0" - Phoenix
Suspected nature of object
?
Description
Blue clumps and wisps (on DESI Legacy imagery), elongated north-northeast to south-southwest, west of the galaxy PGC465139 and east of the larger galaxy PGC465179.
Possibly a Voorwerp or a Blue blob.
Date, plate or visually
23 October 2024, plate
5' DESI Legacy DR10
5' GALEX
5' POSS2 IR
5' POSS2 Red
5' POSS2 Blue
355
R.A. / Dec. - Constellation
16:11:21.5 -48°30'45.0" - Norma
Suspected nature of object
Emission nebula
Description
A relatively bright, half-circle nebula, approximately 4.0'×2.5' in size. 32' North-northeast of the emission nebula Stromlo 51.
Date, plate or visually
5 October 2024, plate
15' POSS2 Red
15' DECaPS DR2
354
R.A. / Dec. - Constellation
16:10:57.8 -48°32'42.3" - Norma
Suspected nature of object
Emission nebula
Description
Surrounding the mag. 13.6 star 4UCAC208-117980. 29' North-northeast of the emission nebula Stromlo 51.
Date, plate or visually
5 October 2024, plate
10' POSS2 Red
10' DECaPS DR2
353
R.A. / Dec. - Constellation
16:10:11 -48°31'30" - Norma
Suspected nature of object
Emission nebula
Description
A very faint, irregular, north-south elongated nebula, approximately 4.5'×2.0' in size. 30' North of the emission nebula Stromlo 51.
Date, plate or visually
5 October 2024, plate
15' POSS2 Red
15' DECaPS DR2
352
R.A. / Dec. - Constellation
18:17:38.3 -19°47'30" - Sagittarius
Suspected nature of object
Reflection nebula
Description
7' South of the middle of the nebula IC1284, surrounding the stars TYC6273-00517-1 (south-southeast, mag. 11.2) and TYC6273-00439-1 (north-northwest, mag. 12.3), aligned south-southeast to north-northeast and separated by 34".
Date, plate or visually
11 September 2024, plate
10' POSS1 Blue
10' PanSTARRS
351
R.A. / Dec. - Constellation
18:17:00 -18°42'00" - Sagittarius
Suspected nature of object
Emission nebula
Description
A small and very faint, possibly two-lobed nebula on the western edge of the open cluster Turner 4 and 3' south-southeast of the nebula Sharpless 1-37. 12' South of the middle of the star cloud Messier 24 (IC4715, the "Sagittarius Star Cloud").
Date, plate or visually
6 September 2024, plate
10' POSS2 Red
10' POSS1 Red
