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 & SDSS (for suspected galaxies), the HASH Planetary Nebulae database and other 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 remove it from my list and update the numbering accordingly.
Jump to...
351 - 352 - 353 - 354 - 355 - 356 - 357 - 358 - 359 - 360 - 361 - 362 - 363 - 364 - 365 - 366 - 367 - 368 - 369 - 370 - 371 - 372 - 373 - 374 - 375 - 376 - 377 - 378 - 379 - 380 - 381 - 382 - 383 - 384 - 385 - 386
1-50 - 51-100 - 101-150 - 151-200 - 201-250 - 251-300 - 301-350
351
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
352
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
353
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
354
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
355
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
356
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
357
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
358
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
359
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
360
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
361
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
362
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
363
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
364
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
365
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
366
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
367
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
368
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
369
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
370
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
371
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
372
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
373
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
374
R.A. / Dec. - Constellation
04:13:27.2 +28°16'24.6" - Taurus
Suspected nature of object
Reflection nebula
Description
Surrounding the variable and double star V1096 Tauri.
10' West-northwest of the nebula Bernes 71.
Date, plate or visually
3 July 2025, plate
10' POSS2 Blue
10' POSS2 Red
10' PanSTARRS
375
R.A. / Dec. - Constellation
02:09:25.8 +65°47'27.5" - Cassiopeia
Suspected nature of object
Reflection nebula
Description
A very small, faint, east-west elongated nebula north-northwest of the mag. 10.4 star TYC4045-00313-1.
34" West-southwest is the mag. 9.2 star SAO12148.
Date, plate or visually
17 July 2025, plate
10' POSS2 Blue
10' POSS1 Blue
376
R.A. / Dec. - Constellation
06:31:44.7 -09°33'43.3" - Monoceros
Suspected nature of object
Reflection nebula
Description
Surrounding the mag. 12.2 star TYC5369-01303-1.
8' Southeast is nr. 379, 14' west-southwest is the reflection nebula Dorschner-Gürtler 104.
Date, plate or visually
27 July 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
377
R.A. / Dec. - Constellation
06:31:32.9 -09°25'27.7" - Monoceros
Suspected nature of object
Reflection nebula
Description
A very faint nebula surrounding the mag. 13.9 star 4UCAC403-014282.
8' North-northwest of nr. 378 and 16' north-northeast of the reflection nebula Dorschner-Gürtler 104.
Date, plate or visually
27 July 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
378
R.A. / Dec. - Constellation
06:26:59.2 -10°05'54.5" - Monoceros
Suspected nature of object
Emission nebula
Description
A small, very faint nebula surrounding the mag. 17.8 star USNO310218399.
6' Northwest of the nebula Gyulbudaghian 4-1.
Date, plate or visually
27 July 2025, plate
10' POSS2 Red
10' PanSTARRS
379
R.A. / Dec. - Constellation
02:15:26 +59°14'50" - Cassiopeia
Suspected nature of object
Reflection nebula
Description
A relatively large, faint (reflection) nebula surrounding the mag. 8.4 A3 star SAO23089.
15' South-southeast of the middle of the open cluster Stock 2 (the "V Man Cluster").
Date, plate or visually
3 August 2025, plate
10' POSS2 Blue-1
10' POSS2 Blue-2
10' POSS1 Blue
380
R.A. / Dec. - Constellation
05:44:32.5 -01°21'00.0" - Orion
Suspected nature of object
Emission nebula
Description
A relatively large and bright, fans-shaped (emission) nebula, approximately 3.5'×2.5' in size. On the south-southeastern edge is the mag. 13.3 star 4UCAC444-011189.
50' Southwest is the emission nebula NGC2024 (the "Flame Nebula").
Date, plate or visually
12 August 2025, plate
10' POSS2 Red
10' POSS1 Red
10' PanSTARRS
10' POSS2 Blue
381
R.A. / Dec. - Constellation
18:58:06.7 +01°32'29.5" - Aquila
Suspected nature of object
Reflection nebula
Description
A small, irregular nebula surrounding the mag. 13.7 star 4UCAC458-084111.
5' South of the nebula Apriamaswili 2-1.
Date, plate or visually
8 September 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
382
R.A. / Dec. - Constellation
18:39:07.5 -01°07'30.0" - Serpens (Cauda)
Suspected nature of object
Nebula
Description
A relatively large, faint, irregular nebula south of the mag. 8.9 B9 star SAO142469.
Date, plate or visually
8 September 2025, plate
10' POSS2 Blue
10' POSS1 Blue
10' PanSTARRS
383
R.A. / Dec. - Constellation
00:04:30 +70°49'15" - Cepheus
Suspected nature of object
Reflection nebula
Description
A west-southwest to east-northeast elongated nebula, approximately 5.0'×2.5' in size, to the northwest of the mag. 8.8 A0 star SAO4030. Larger, fainter nebulosity extends southwards.
Date, plate or visually
26 October 2025, plate
15' POSS2 Blue
15' POSS1 Blue
384
R.A. / Dec. - Constellation
19:13:06 +15°01'25" - Aquila
Suspected nature of object
Reflection nebula
Description
A faint, east-west elongated nebula to the west-southwest of the mag. 6.7 K0 star SAO104617. To the east-northeast of the open cluster or asterism Teutsch 149.
Date, plate or visually
4 November 2025, plate
15' POSS2 Blue
15' POSS1 Blue
15' PanSTARRS
385
R.A. / Dec. - Constellation
18:11:12 -19°50'00" - Sagittarius
Suspected nature of object
Reflection nebula
Description
An irregular nebula surrounding the double star Burnham 132 (WDS18112-1951, A mag. 7.0, A4), brightest to the northwest of the star. Approximately 4' in size.
Date, plate or visually
24 November 2025, plate
10' POSS2 Blue
10' POSS1 Blue
386
R.A. / Dec. - Constellation
18:15:53.7 -20°01'20.5" - Sagittarius
Suspected nature of object
Reflection nebula
Description
An east-west elongated nebula southwest of the mag. 9.5 star TYC6272-02515-1. Fainter nebulosity extends northwards and southwards.
Date, plate or visually
24 November 2025, plate
10' POSS2 Blue
10' POSS1 Blue
