NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC2129
Basic Information
Location and Magnitude
Right Ascension: 6:1:6.5
Declination: +23:19:4
Constellation: GEM
Visual Magnitude: 6.7
Historic Information
Discoverer: Herschel W.
Year of discovery: 1784
Discovery aperture: 18.7
Observational
Summary description: Cl, pL, 40 or 50 st 8…15
Sub-type: III3p
Corwin's Notes
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NGC 2129 appears to be a cluster of about 30 stars scattered around two bright
ones near the center. However, neither the UCAC2 proper motions, nor multi-
color photometry (see J. H. Pena and R. Peniche in Rev. Mex. A&A 28, 139,
1994) support the idea that this is a true physical cluster. Instead, it
seems that this is a random clumping of stars at different distances,
accidentally rich enough to pass for a real cluster.
James Kaler's article in S&T, Feb 2005, page 90, called attention to the
purely optical nature of this object.
Steve's Notes
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NGC 2129
17.5" (12/20/95): bright, fairly rich group surrounding two mag 7.5 and 8 stars (SAO 77842 and 77839) oriented N-S. There are about three dozen stars mag 10-14 in an 5' well-detached circular group with several double stars including a faint pair preceding the northern mag 8 star. The southern mag 8 star has a couple of very faint companions.
This group is apparently an asterism based on a 1994 study.