Crater 2 Dwarf Galaxy

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Crater 2
Observation data (J2000.0 epoch)
ConstellationCrater[1]
Right ascension11h 49m 14.400s
177.310°±0.03°[1]
Declination−18° 24′ 46.80″
−18.413°±0.03°[1]
Distance383,000 ly (117.5 kpc)[1]
Apparent magnitude (V)20.35±0.02 mag[1]
Absolute magnitude (V)−8.2±0.1 mag[1]
Characteristics
TypedSph[1]
Apparent size (V)62.4 (rh=31.2 ± 2.5)[1]
6,950 ly (2,132 pc)
rh=1066pc ± 84pc[1]
Notable features4th largest satellite
galaxy to Milky Way[1]
See also: Galaxy, List of galaxies

Crater 2 is a dwarf galaxy discovered orbiting the Milky Way,[1] located approximately 380,000 ly from Earth.[2] Crater 2 was identified in imaging data from the VST ATLAS survey.[2]

The galaxy has a half-light radius of ∼1100 pc, making it the fourth largest satellite of the Milky Way.[1] It has an angular size about double of that of the moon.[2][3]

See also[edit]

References[edit]

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 Torrealba, G.; Koposov, S. E.; Belokurov, V.; Irwin, M. (2016). "The feeble giant. Discovery of a large and diffuse Milky Way dwarf galaxy in the constellation of Crater". Monthly Notices of the Royal Astronomical Society 459 (3): 2370-2378. arXiv:1601.07178. Bibcode 2016MNRAS.459.2370T. doi:10.1093/mnras/stw733.
  2. 2.0 2.1 2.2 Lua error in Module:Citation/CS1 at line 379: attempt to call method 'match' (a nil value).
  3. Lua error in Module:Citation/CS1 at line 379: attempt to call method 'match' (a nil value).


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