NGC/IC Project Restoration Effort

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NGC3460

 

Basic Information


Location and Magnitude


Right Ascension: 10:54:48.6
Declination: +17:37:17
Constellation: LEO
Visual Magnitude: 12.7

Historic Information


Discoverer: Mitchell
Year of discovery: 1854
Discovery aperture: 72.0

Observational


Summary description: pB, R, no * nr (?? = h 793)
Sub-type: S?

Corwin's Notes

===== NGC 3460 and N3461 were first seen as a pair by LdR in 1854, then again in April of 1878. In March of that year, he says "Setting for this, I found an eS Cl with a * 12m in Pos 175.1 deg, Dist 305.0 arcsec." There is nothing in the area which matches this description as the star south-southeast of the galaxy is only 4 arcmin away, while that south-southeast of IC 656 (a triple star, which see) is over 6 arcmin distant. In LdR's 1880 monograph, Dreyer lists all the observations under the GC number for NGC 3457 (GC 2256 = h 793; which see), but as I note there, it's not clear that NGC 3460 was the object JH and his Mr. Bailey saw. Swift picked up the galaxy in 1885; it is the 9th nebula of more than a thousand which he catalogued as "novae." Given the difference in his RA and JH's (23 seconds), both he and Dreyer can be forgiven for thinking he had found a new nebula. Since there is no question about the identity of NGC 3461 -- it is the faint galaxy about 5.5 arcmin north-northeast of the brighter galaxy -- and since LdR saw the two as a pair twice, it makes sense to retain the number NGC 3460 for the bright object. I'm not so sure what to do about the number NGC 3457 (which see for more) -- it could belong to the brighter galaxy, or it could be for the triple star along with IC 656.

Steve's Notes

===== NGC 3460 See observing notes for NGC 3457.