NGC 2175

NGC 2175 = Ced 67a = LBN 854 = Sh 2-252 = Cr 84
06 09 39.5 +20 29 15
Size 40x30

17.5": See description for N2174.  Although the scattered group of stars 
involved with the HII region is identified as N2175,  the NGC description (from 
Auwers and Bruhns) does not refer to a cluster but rather a "*8m in neb (Auw No 
21)".  The position given is 10' south of N2174 and 16 tsec east.  But in the IC 
2 notes and correction, Dreyer gives a correction in RA from Bigourdan to 06 01 
32.  This places N2175 at 06 09 52 +20 29.1 (2000) and is just 1' south of the 
brightest section of the nebula (about 3' ENE of mag 8 SAO 78049).

- by Steve Gottlieb

NGC 2175 is a very large roughly circular emission nebula which also includes 
NGC 2174 and IC 2159 (both of which see), and a star cluster which has 
inherited the NGC number, though there is no mention of it in the discovery 
notes.  The nebula is centered on SAO 078049, though the brightest knot (which
Bigourdan took for N2175; hence, the ``corrected'' RA in the IC2 Notes) is 
about three arcmin to the west-northwest.  Auwers's note makes it clear that 
NGC 2175 is much more than just the knot:  he gives dimensions of 25 arcmin by
8 arcmin, and specifically adopts the position of Lalande 11668 = SAO 078049 
as that for the object.  I have followed his lead. - Dr. Harold G. Corwin, Jr.

As with all corrections to the NGC and IC Catalogues, there is a certain margin
for error, even though the evidence supporting the correction may be strong and
compelling. It is with this in mind that we ask the user to use this information
as 'Most Probable', but never to assume the correction is 'Absolute'.  All
published corrections are based on an exhaustive 'paper chase' of the historical
record back to the original discoverer's published notes/papers, and are
therefore based upon the historical accuracy (or inaccuracy) of those particular
notes/papers. In short, Caveat Emptor! - Robert E. Erdmann, Jr.