Koposov I

Koposov I
Observation data
Constellation	Virgo
Right ascension	11^h 59^m 18.05^s^[1]
Declination	+12° 15′ 36.0″^[1]
Distance	157.5 kly (48.3 kpc)^[1]
Apparent magnitude (V)	14.20^[1]
Physical characteristics
Radius	approx. 3 pc (9.8 ly)^[2]

Koposov I is a low-luminosity globular cluster in the constellation Virgo in the halo of the Milky Way galaxy. It was discovered, along with globular cluster Koposov II by S. Koposov et al. in 2007. Koposov I and Koposov II were described by their discoverers as the "lowest luminosity globular clusters orbiting the Milky Way," along with AM 4, Palomar 1, and Whiting 1.^[2]

References

1 2 3 4 "Koposov 1". Spider. Retrieved 15 February 2013.
1 2 Koposov, S.; de Jong, J.T.A.; Belokurov, V.; Rix, H.-W.; Zucker, D.B.; Evans, N.W.; Gilmore, G.; Irwin, M.J.; Bell, E.F. (2007). "The Discovery of Two Extremely Low Luminosity Milky Way Globular Clusters". The Astrophysical Journal. 669: 337–342. arXiv:0706.0019. Bibcode:2007ApJ...669..337K. doi:10.1086/521422.

The Milky Way

Location

Milky Way → Milky Way subgroup → Local Group → Virgo Supercluster → Laniakea Supercluster → Observable universe → Universe
Each arrow (→) may be read as "within" or "part of".

Galactic core

Spiral arms

Satellite galaxies

Magellanic Clouds	Large Magellanic Cloud Small Magellanic Cloud Magellanic Stream Magellanic Bridge

Sagittarius Spheroidal	Sagittarius Stream Boötes II Coma Berenices Messier 54 Palomar 12 Segue 1 Segue 2 Terzan 7

Dwarfs	Boötes I Boötes III Canes Venatici I Canes Venatici II Canis Major Carina Crater 2 Draco Fornax Hercules Leo I Leo II Leo IV Leo V Phoenix Pisces I Pisces II Sculptor Sextans Triangulum II Ursa Major I Ursa Major II Ursa Minor Virgo I

Other	Monoceros Ring Virgo Stream Koposov I Koposov II Segue 3 Willman 1

Andromeda–Milky Way collision

Astronomy portal

Coordinates: 11^h 59^m 18.05^s, +12° 15′ 36.0″

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