Discoveries 401 and further
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.
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401
R.A. / Dec. - Constellation
21:55:03.8 +66°15'14.6" - Cepheus
Suspected nature of object
Reflection nebula
Description
An elongated (reflection) nebula surrounding the mag. 10.4 star TYC4274-02047-1. Approximately 3.0'×1.5' in size.
Date, plate or visually
31 August, plate
10' POSS2 Blue
10' POSS1 Blue
402
R.A. / Dec. - Constellation
05:15:03.4 +32°39'03.0" - Auriga
Suspected nature of object
Reflection nebula
Description
A small (reflection) nebula surrounding the mag. 12.1 star 4UCAC614-019132. Approximately 1.0'×0.8' in size.
East-southeast of the middle of the open cluster Dolidze 16 and 5' west-southwest of the variable and double star 14 Aurigae.
Date, plate or visually
8 September, plate
10' POSS2 Blue - 1
10' POSS2 Blue - 2
