Dwingeloo 2
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| Dwingeloo 2 | |
| Observation data (J2000 epoch) | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 02h 54m 08.47s |
| Declination | +59° 00' 19.1" |
| Distance | 9.8 Mly[1] |
| Type | IAm |
| Apparent magnitude (V) | 20.5 |
| Notable features | Companion of Dwingeloo 1 |
| See also: Galaxy, List of galaxies | |
Dwingeloo 2 is a small irregular galaxy, located almost 10 million light-years away from the Earth. Dwingeloo 2 orbits Dwingeloo 1, much like NGC 5195 orbits the Whirlpool Galaxy (M51).
Dwingeloo 2 was first detected at radio wavelengths from the 21 cm emission line of neutral atomic hydrogen (known to astronomers as HI) in the course of follow-up observations after the discovery of Dwingeloo 1. Dwingeloo 1 and Dwingeloo 2 are thought to be members of the Maffei 1 group, a group of galaxies adjacent to the Local Group.
[edit] External links
[edit] References
- ^ Karachentsev, I. D. (2005). "The Local Group and Other Neighboring Galaxy Groups". Astronomical Journal 129 (1): 178-188.
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