NGC/IC Project Restoration Effort

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NGC2509

 

Basic Information


Location and Magnitude


Right Ascension: 8:0:47.8
Declination: -19:3:2
Constellation: PUP
Visual Magnitude: 9.3

Historic Information


Discoverer: Herschel W.
Year of discovery: 1783
Discovery aperture: 18.7

Observational


Summary description: Cl, B, pRi, lC, st S
Sub-type: II1p

Corwin's Notes

===== NGC 2509. See NGC 2319.

Steve's Notes

===== NGC 2509 18" (3/2/08): beautiful cluster of 80-100 stars at 175x, highlighted by a dense 2-2.5' clump of fainter stars resolved over some remaining haze. Double or multiple stars are at the NE and NW corners of this central knot. At 220x the SE corner of the clump is very rich in faint stars with averted! The brightest star is at the SW side with a string of mag 10-11 stars extending outside of the cluster to the SE from of this star. The cluster is situated ~6' NW of mag 8.8 HD 66034. 17.5" (3/12/94): 50 stars resolved in a 6'x5' region outlined by a perfect parallelogram. The majority of the stars, though, lie in a prominent dense clump along the NW side of the parallelogram and includes a nice double star. The NE vertex of the parallelogram is a double star with components mag 13/13.5 at 12". The parallelogram has no concentration and the interior southern portion has only a couple of faint stars. Mag 8.6 SAO 153720 lies roughly 6' SE and a bright wide double star consisting of a mag 10.5/12 pair at 26" is 4' NNE of the parallelogram.