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Type: galaxy, SBbc
Mag: B=14.3, V=13.5
Size: 0.9′ x 0.9′
NGC 5808 = NGC 5819. In spite of what Dreyer says in his notes to WH's Papers, the galaxy is very nearly between two stars about 6 arcmin apart, just as WH claims. D'Arrest's description ("Forms a triangle with two stars") is also correct -- the triangle is quite flat. D'A's position is pretty good, WH's less so: it is out by a minute of time in RA, and 6.5 arcmin in Dec. But there is no doubt concerning the identity; the stars nail it down.
Synonyms: H III-311
Discovered in 1785 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "vF, S, iR, between two pretty small stars, 6' apart."
Dreyer notes: "d'Arrest and Bigourdan have only seen a nebula (NGC 5819) +1 minute -7' from H's place, but it is not in the middle between two stars 6' apart. Bigourdan has an object in +48 seconds, -3' from H's place, but it is probably only a vF star."
The RNGC (Sulentic and Tifft 1973) notes that this is a nonexistent object. Their coded description reads =5819 S.
The Messier objects
The Bennett objects
The Caldwell list
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