Ursa Minor Dwarf

Dwarf Spheroidal Galaxy Ursa Minor Dwarf (UGC 9749, DDO 199, A1508), type dE4, in Ursa Minor

[Ursa Minor Dwarf by Mischa Schirmer]

15 : 08.8
+67 : 12
240 kly
Apparent Dimension:
41.0 x 26.0 arc min
10.9 m_v
Abs. Mag:
Discovered by A.G. Wilson in 1954.

The Ursa Minor Dwarf was discovered by A.G. Wilson of Lowell Observatory, who had already discovered dwarf galaxy Leo I some years earlier, on photographic plates from the National Geographic Society - Palomar Observatory Sky Survey (POSS) in the early 1954, together with the Draco Dwarf (Wilson 1955).

Ursa Minor Dwarf is one of the small satellite galaxies of our Milky Way Galaxy, at a distance of about 240,000 light years. It is a dwarf elliptical or dwarf spheroidal galaxy, consisting of an old stellar population only and no significant amount of interstellar matter.

The image in this page was obtained by Mischa Schirmer, obtained July 6-9, 2005 from Roque de los Muchachos, La Palma, with FFC on MM mount and ST-10XME CCD camera, exposed 11:50 (LRGB: L = 60*300s, RGB = (12x11x18)*600s). Also see hires version and higher contrast b/w version - the latter also available in hires.


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Hartmut Frommert
Christine Kronberg

Last Modification: May 29, 2002