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Dwingeloo 2 - Wikipedia, the free encyclopedia

Dwingeloo 2

From Wikipedia, the free encyclopedia

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

  1. ^ Karachentsev, I. D. (2005). "The Local Group and Other Neighboring Galaxy Groups". Astronomical Journal 129 (1): 178-188. 


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