Dwarf Spheroidal Galaxy Andromeda I (PGC 2666), type dE3 pec ?,
Andromeda 1, or And I, is a dwarf spheroidal galaxy, and a companion of the
Andromeda Galaxy M31, situated roughly 3.5 degrees
south and slightly east of the great neighbor, corresponding to a projected
distance of about 150,000 ly. From us, it is slightly more distant than the
great galaxy, according to van den Bergh 2000.
- 00 : 45.7
- +38 : 00
- dE3 pec ?
- 3000 kly
- Apparent Dimension:
- 2.5 x 2.5 arc min
- Abs. Mag:
And I was discovered by Sidney van der Bergh on photographic plates taken in
1970 and 1971 with the Palomar 48-inch (1.2-meter) Schmidt telescope, together
with And II, And III, and the
presumable non- or background galaxy And IV
(van den Bergh 1972).
Our image was obtained by
Martin Germano. It is a 125-min exposure on hypered Kodak Tech Pan 2415,
taken through his 14.5-inch f/5 Newtonian telescope in September 2001.
Martin writes: "This dwarf elliptical Galaxy in Andromeda is really faint!
Just a small scattering of faint dots near the center of this image."
- Peter Riepe and Harald Tomsik,.
Die späroiden Zwerggalaxien des M31-Systems
[The Spheroidal Dwarf Galaxies of the M31 System].
interstellarum No. 30, Oct 2003, pp. 42-45 (in German).
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Last Modification: July 25, 2001