NGC/IC Project Restoration Effort

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NGC6864

 

Basic Information


Location and Magnitude


Right Ascension: 20:6:4.8
Declination: -21:55:15
Constellation: SGR
Visual Magnitude: 8.6

Historic Information


Discoverer: Mechain
Year of discovery: 1780
Discovery aperture: 3.0

Observational


Summary description: globular, B, pL, R, vmbMBN, rr
Sub-type: I

Steve's Notes

===== NGC 6864 17.5" (7/14/93): bright, moderately large, 3' diameter, round, very bright striking core 30" diameter, very mottled. Several extremely faint 15th mag stars pop in and out of view with averted vision in the outer halo. A mag 14 star is in the inner region just NE of core. The cluster almost reaches four mag 12.5-13 stars, which cradle the globular on the south and NE sides, and a fainter star is off the NW side. This cluster is quite concentrated and is the only Shapley-Sawyer class I globular in the Messier catalogue. 13.1" (8/25/82): bright intense core surrounded by a fainter halo that is slightly mottled but with no obvious resolution. 15x50 IS binoculars (9/26/11): easily picked up as a very small, round glow with a bright, nearly stellar center and a small fainter halo.