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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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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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