Archive:Hoag's Object

Hoag's object is a highly unusual ring galaxy which appears to have a yellow core and a disconnected outer ring. Even more remarkably, another almost identical smaller object can be seen through the ring.

References: Hoag, A. A. (1950), AJ, 55, 170

See also: polar-ring galaxy, NGC 4650A, Cartwheel Galaxy

External links:

• http://heritage.stsci.edu/2002/21/table.html
• http://nedwww.ipac.caltech.edu/level5/Rings/Rings17_2.html
• http://oposite.stsci.edu/pubinfo/PR/2002/21/index.html
• NASA/IPAC Extragalactic Database data for Hoag's object