Segue 1

RA:

10:07:04

Dec:

+12:47:30

Distance from Sun:

75.0 kly

Distance from Galactic Center:

Apparent Diameter:

4.5 arc min

Brightness:

14.7 mag (vis)

Radial Velocity:

Diameter:

c. 10 ly

Abs. Mag:

c. -2

Discovered by Belokurov et.al. 2006 in the SDSS imaging data.

Discovered in 2006 (Belokurov et.al. 2007), this object was considered a Globular Cluster candidate by Harris (2010), but is now thought to be a dwarf spheroidal galaxy in the Local Group, a satellite of the Milky Way.

.. more to come ..

References:

• V. Berokurov, D.B. Zucker, N.W. Evans, J.T. Kleyna, S. Koposov, S.T. Hodgkin, M.J. Irwin, G. Gilmore, M.I. Wilkinson, M. Fellhauer, D.M. Bramich, P.C. Hewett, S. Vidrir, J.T.A. de Jong, J.A. Smith, H.-W. Rix, E.F. Bell, R.F.G. Wyse, H.J. Newberg, P.A. Mayeur, B. Yanny, C.M. Rockosi, O.Y. Gnedin, D.P. Schneider, T.C. Beers, J.C. Barentine, H. Brewington, J. Brinkmann, M. Harvanek, S.J. Kleinman, J. Krzesinski, D. Long, A. Nitta, S.A. Sneddon, 2007. Cats and Dogs, Hair and a Hero: A Quintet of New Milky Way Companions. Astrophysical Journal, Vol. 654, Issue 2, pp. 897-906 (January 2007) [ADS: 2007ApJ...654..897B] - [Preprint: astro-ph/0608448]