NGC/IC Project Restoration Effort

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NGC5155

 

Basic Information


Location and Magnitude


Right Ascension: 13:28:18.0
Declination: -63:28:0
Constellation: CEN
Visual Magnitude:

Historic Information


Discoverer: Herschel J.
Year of discovery: 1835
Discovery aperture: 18.3

Observational


Summary description: Cl, vRi
Sub-type: *Cloud

Corwin's Notes

===== NGC 5155 is a Milky Way star cloud about 1 degree across, with dust lanes and patches splashed over it. I put it a little southwest of JH's position, but his description ("A portion of the Milky Way broken up into clustering masses of astonishing richness. There must be at least 200 or 300 stars in the field, none greater than 10 m.") idenitfies it securely. This same star cloud may also be NGC 5045 (which see), but that was found in the same sweep (number 596 on 16 June 1835). That makes the identity unlikely, but I suggest it as a remote possibility.

Steve's Notes

===== NGC 5155 18" (4/6/16 - Coonabarabran, 73x and 139x): Superb Milky Way field, the richest region is roughly 20-25' in diameter and stands out reasonably well in the lowest power (64' field). Though amazingly rich in faint stars, it appears as a Milky Way star cloud, and not a cluster. An elongated N-S dark dust cloud (5'x3') to the southeast is prominent (SIMBAD designation [DB2002b] G307.15-1.01). An 8' string of five mag 8.5-11 stars is off the south side and open cluster NGC 5120 is at the southwest edge.