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Mag: B=?, V=?
Size: 0.575′ x 0.371′
NGC 4823 is one of three galaxies discovered by Wilhelm Tempel south of N4825. His paper in AN 2439 announcing the discovery (of these and many others) is not very helpful. It says only "Quite close to the south [of N4825] are three more faint nebulae." The NGC positions must have been among those that he sent privately to Dreyer (cf. Dreyer's comment on page 11 of the NGC) -- and they seem to be only approximate (N4823's NGC position is actually quite close to N4825). Here are the data (all for 1950):
NGC Skiff NGC RA Dec Object RA Dec 4820 12 54 23 -13 27.3 1 12 54 22.9 -13 26 57 4823 12 54 29 -13 24.3 3 12 54 48.0 -13 25 44 4825 12 54 33 -13 23.9 --- 12 54 34.6 -13 23 42 4829 12 54 45 -13 28.3 2 12 54 46.8 -13 28 04
So, we have three galaxies and three NGC numbers that obviously refer to the galaxies (there are no others nearby). Matching things up by position alone -- Tempel's descriptions are the same for all the galaxies -- leads to the identifications that I suggest in the table. These are different from my initial identifications for ESGC. They require only that the RA of N4823 be out by 20 seconds, whereas my first guesses demand declination changes for both N4823 and N4829. I've adopted these for the final version of ESGC.
The RNGC (Sulentic and Tifft 1973) notes that this is a nonexistent object. Their coded description reads NF S.
The Messier objects
The Bennett objects
The Caldwell list
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