Leo II | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Leo |
Right ascension | 11h 13m 29.2s [1] |
Declination | +22° 09′ 17″ [1] |
Redshift | 0.000264 (79 ± 1 km/s) [1] |
Distance | 690 ± 70 kly (210 ± 20 kpc)[2] [3] |
Apparent magnitude (V) | 12.6 [1] |
Characteristics | |
Type | E0 pec [1] |
Apparent size (V) | 12.0 x 11.0 arcmin [1] |
Other designations | |
PGC 34176, DDO 93 |
Leo II (or Leo B) is a dwarf spheroidal galaxy about 690,000 light-years away in the constellation Leo. It is one of 24 known satellite galaxies of the Milky Way.[4] Leo II is thought to have a core radius of 178 ± 13 pc and a tidal radius of 632 ± 32 pc.[5] It was discovered in 1950 by Robert George Harrington and Albert George Wilson, from the Mount Wilson and Palomar Observatories in California.