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RA: 16h 22m 10.1s
Dec: −01° 30′ 53″
Ch: MSA:1301, U2:246, SA:15
Ref: NGC/IC, SIMBAD, Corwin
Type: galaxy, E
Mag: B=13.8, V=12.9
Size: 1′ x 1′
NGC 6172 = IC 1213. Stephan's position is 10 minutes of time too large due to a misprint in his paper in AN 2661. The position for his comparison star is correctly given, however, and identifies it as SAO 141069. Once the correction is made, it's clear that N6172 is IC 1213. RC3 is correct for a change.
Bailey, examining a Bruce plate (Harvard Annals, Vol 72, No 2), describes it as "not seen; double star near this position."
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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