Dwarf Spheroidal Galaxy Draco Dwarf (UGC 10822, DDO 208, A1719),
type dE0 pec,
Discovered by A.G. Wilson in 1954.
- 17 : 20.1
- +57 : 55
- dE0 pec
- -31 km/s
- 280 kly
- Apparent Dimension:
- 51.0 x 31.0 arc min
- 9.9 m_v
- Abs. Mag:
The Draco Dwarf was discovered by Albert 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 1954, together with the
Ursa Minor Dwarf
(Wilson 1955). It was subsequently investigated by
Walter Baade and Henrietta H. Swope (1961) who found
over 260 variables (including 5 RR Lyrae stars), and by
Paul W. Hodge (1964) who analysed the distribution of
The Draco Dwarf is one of the faintest galaxies known. As a dwarf elliptical
or dwarf spheroidal galaxy, it contains only an old population of stars and
no significant amount of interstellar matter. It is one of the small
satellite galaxies of our Milky Way Galaxy, at a
distance of about 280,000 light years.
- W. Baade and H.H. Swope, 1961.
The Draco System, a Dwarf Galaxy.
Astronomical Journal, Vol. 66, No. 7, pp. 300-347 (09/1961)
- Paul W. Hodge, 1964.
Distribution of stars in the Draco dwarf galaxy.
Astronomical Journal, Vol. 69, No. 10, pp. 853-857 (12/1964)
- A.G. Wilson, 1955.
Sculptor-Type Systems in the Local Group of Galaxies.
Publications of the Astronomical Society of the Pacific, Vol. 67, No. 394,
pp. 27-29 (02/1955)
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Last Modification: May 26, 2002