NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC3231

Basic Information

Location and Magnitude

Right Ascension: 10:26:57.8
Declination: +66:48:45
Constellation: UMA
Visual Magnitude:

Historic Information

Discoverer: Herschel J.
Year of discovery: 1832
Discovery aperture: 18.3

Observational

Summary description: Cl, cL, P, lC, st 10…12
Sub-type: OCL

Corwin's Notes

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NGC 3231 may be a sparce cluster, but is more likely a random collection of
stars.  JH's description is exact:  "A cluster of 20 stars more or less, 10,
11, and 12 m, scattered over a space 10' diam.  A star 7 m s."  This shows 
that it is considerably more than Brian Skiff's "2.5' diamond-shaped *ism of 
seven *s, m11-14."

JH's position is for the brightest star on the western edge of the group.  The
center is about 30 seconds on east.
  
Also see NGC 4512.

Steve's Notes

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NGC 3231

18" (3/5/05): 16 stars are visible in an 8' region.  The stars are distributed into two groups oriented NW-SE.  The northwest group stands out more distinctly as it is a bit richer and more compact (~2.5' diameter) and contains a mag 11.5/13 pair at 18".  The sparser SE group also contains a mag 13 pair at 17".  At the SE edge of the 225x field (9' SE of the NW grouping) is mag 7.9 HD 90318.  Listed as an asterism in the RNGC.