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The flying dragon and "non-existent" NGC7054


gorann

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When I uploaded my HaRGB image of the very faint Sh2-114 The Flying Dragon Nebula to Astrobin, the plate solving did not recognize the nebula. Maybe the Sh2 objects are not in the Astrometry database? However, it "finds" an object called NGC7054, which I cannot see in the image. So I googled it and found it in the Deutch Wikipedia where the little information there is there says: "NGC 7054 is een niet-bestaand object in het sterrenbeeld Zwaan. Het hemelobject werd in 1872 ontdekt door de Franse astronoom Édouard Jean-Marie Stephan." Or translated by google translator:

"NGC 7054 is a non-existent object in the constellation of Swan. The celestial object was discovered in 1872 by the French astronomer Édouard Jean-Marie Stephan."

Does anyone know anything about this obejct and how can an object in the NGC catalogue be "non-existent"? Did Édouard Jean-Marie Stephan just imagine it?

I attach my image and a screen dump of the Astrobin page

 

 

20180930 Sh2-114 ASI E150 RGB PS3(+Saturation) +Ha blend redPS42smallSign.jpg

Skärmavbild 2018-10-14 kl. 11.58.59.png

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9 hours ago, Mognet said:

This could explain it https://cseligman.com/text/atlas/ngc70a.htm#7054 NGC7054 is probably a misidentification of NGC7080

Thanks, you solved it! It explains it all as it says:

NGC 7054 (= NGC 7080 = PGC 66861)
Discovered (Sep 6, 1863) by Albert Marth (and later listed as NGC 7080)
Also observed (Aug 31, 1872) by Édouard Stephan (and later listed as NGC 7054)
A 12th-magnitude spiral galaxy (type SBb?) in Vulpecula (RA 21 30 01.9, Dec +26 43 06)

Historical Identification: Per Dreyer, NGC 7054 (= GC 5991, Stephan list IV (#4), 1860 RA 21 15 11, NPD 51 25.2) is "very faint, very small, round, faint star involved".
Discovery Notes: Previously thought to be a lost or nonexistent object, but recently shown to be an observation of NGC 7080 with a misidentified comparison star; to be fleshed out when the Historical Identification is taken care of.
 
It would be a good idea to remove it then from the Astrometry plate solving base as nothing exists it that particular location.
 
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