Leo II

Dwarf Spheroidal Galaxy Leo II (Leo B, UGC 6253, DDO 93, A1111), type dE0 pec, in Leo

Harrington-Wilson 2

RA:: 11 : 13.5
Dec:: +22 : 10
Type:: dE0 pec
RV:
Distance:: 750 kly
Apparent Dimension:: 12.0 x 11.0 arc min
Diameter:
Brightness:: 12.6 mag vis
Abs. Mag:
Mass:

Together with Leo I, dwarf spheroidal galaxy Leo II was discovered in 1950 by R.G. Harrington and A.G. Wilson of the Mt. Wilson and Palomar Observatories on plates of the National Geographic Society - Palomar Sky Survey obtained with the 48-inch Schmidt Telescope on Mt. Palomar (Harrington and Wilson, 1950). According to Wilson (1955), Wilson discovered Leo I and Harrington discovered Leo II.

The image in our webpage was obtained by Chris Schur with his 12.5" f/5 home-made Newtonian, using a SBIG ST7E CCD camera with Enhanced Cooling, from Payson, Arizona at 5150 ft elevation. It is a composite of exposures LRGB, exposure times 60:20:20:36 min.

More information on this image by Chris Schur

Leo II image by Martin Germano, a 135-min exposure on hypered Kodak Tech Pan 2415 with his 14.5-inch f/5 Newtonian, stopped to f/6, of April 2002.

Leo II image by Peter Erdman, an about 15-hour exposure taken with an 8" f/9 system and SBIG ST-10 CCD camera, taken in 2003 from Peter's driveway.

References:

R. G. Harrington and A. G. Wilson, 1950. Two New Stellar Systems in Leo. Publications of the Astronomical Society of the Pacific, Vol. 62, No. 365, p. 118 [ADS: 1950PASP...62..118H]
A.G. Wilson, 1955. Sculptor-Type Systems in the Local Group of Galaxies. Publications of the Astronomical Society of the Pacific, Vol. 67, No. 394, pp. 27-29 (02/1955) [ADS: 1955PASP...67...27W]

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Hartmut Frommert
Christine Kronberg
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Last Modification: June 26, 2003