Draco II
Extremely faint candidate satellite galaxy of the Milky Way
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Draco II / Leavens 4 is a dwarf satellite galaxy orbiting the Milky Way discovered by the Pan-STARRS1 3π survey in 2015.[3] Currently, it is both one of the nearest and dimmest galaxies known to astronomers. Analysis of its stars' distribution in color–magnitude space show that Draco II is approximately 13.5 billion years old.[2]
Right ascension15h 52m 47.6s[1]
Declination+64° 33′ 55″[1]
| Draco II / Laevens 4 | |
|---|---|
Photograph of the Draco II satellite galaxy. | |
| Observation data (J2000 epoch) | |
| Constellation | Draco |
| Right ascension | 15h 52m 47.6s[1] |
| Declination | +64° 33′ 55″[1] |
| Distance | 70.1±1.3 kly (21.5±0.4 kpc)[2] |
| Absolute magnitude (V) | −0.8+0.4 −1[2] |
| Characteristics | |
| Type | dSph |
| Mass/Light ratio | 2.7+0.5 −0.8[3] M☉/L☉ |
| Size | 324 ly |
| Other designations | |
| Lae 4, Dra II | |