Sagittarius Dwarf Elliptical Galaxy (SagDEG)

Dwarf Spheroidal Galaxy SagDEG, type dSph/E7, in Sagittarius

RA:: 18 : 55
Dec:: -30 : 30
Type:: dSph/E7
RV:: + 80 km/s
Distance:: 80 kly
Apparent Dimension:: 190 x 490 arc min
Diameter:: 10 kly
Brightness:
Abs. Mag:
Mass:

Sagittarius Dwarf Elliptical Galxy, SagDEG, or Sagittarius Dwarf Spheroidal Galaxy (Sgr dSph) was discovered in 1994 by R. Ibata, M. Irwin, and G. Gilmore, and is the nearest neighbor to our Milky Way; it is currently undergoing an encounter with "us" which will very probably disrupt this dwarf galaxy. It is of such an extremely low surface brightness that it had previously excaped discovery. Nevertheless, it is quite big (about 10,000 lightyears) and has probably four globular clusters, which will enrich the Milky Way's halo at one time: M54, Arp 2, Terzan 7 and Terzan 8.