NGC/IC Project Restoration Effort

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NGC6412

 

Basic Information


Location and Magnitude


Right Ascension: 17:29:36.9
Declination: +75:42:17
Constellation: DRA
Visual Magnitude: 11.8

Historic Information


Discoverer: Herschel W.
Year of discovery: 1797
Discovery aperture: 18.7

Observational


Summary description: globular, cL, R, vgbM, rr
Sub-type: SBc

Steve's Notes

===== NGC 6412 48" (10/22/11): at 375x appeared bright, large, round, 2' diameter. Broad concentration with a large, brighter 30" core, hint of spiral structure in the halo though it was difficult to trace the arms. An HII knot or companion was easily seen superimposed at the edge of the halo on the north side (37" from center) and appeared faint, small, oval, ~12"x8". A mag 13.5 star lies 1' SW and a mag 16 star is 1.8' SW; both stars are collinear with the core. A bright mag 11.3 star lies 2' SE. Listed by Arp as a spiral with a "low surface brightness companion on arms", but the "companion" may be an HII region. 17.5" (7/9/88): moderately bright, irregularly round, 2.0' diameter, diffuse halo, weak even concentration to a brighter core. A mag 13.5 star is at the SW edge 1.1' from center. A string of three equally spaced stars begins with a mag 11 star 2' SE and includes two bright stars; mag 8.3 SAO 8824 4.1' S and mag 9.3 SAO 8821 7.6' SSW. 8" (8/5/83): very faint, small, diffuse. Located north of two mag 8 stars in field.