Astronomy:NGC 3842
From HandWiki
Short description: Galaxy in the constellation Leo
| NGC 3842 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 44m 02.2s[1] |
| Declination | 19° 56′ 59.3″[1] |
| Redshift | 0.021068 ± 0.000031[1] |
| Helio radial velocity | 6316 ± 9 km/s[1] |
| Distance | 325 Mly (99.6 Mpc) |
| Group or cluster | Leo Cluster |
| Apparent magnitude (V) | 12.78[1] |
| Characteristics | |
| Type | E[1] |
| Apparent size (V) | 1.4 x 1.0[1] |
| Notable features | brightest member of the Leo Cluster, has a 9.7 billion solar mass black hole |
| Other designations | |
| UGC 6704, PGC 36487, MCG 3-30-72, ZWG 97.95,[1] | |
NGC 3842 is an elliptical galaxy in the constellation of Leo. It was discovered by William Herschel. It is notable for containing one of the largest black holes ever detected, reported to have a mass of 9.7 billion solar masses.[2] It is around 330 million light-years distant from Earth.
NGC 3842 is the brightest member[3] of the Leo Cluster.[4][5]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "NASA/IPAC Extragalactic Database". Results for NGC 3842. http://nedwww.ipac.caltech.edu/.
- ↑ Rincon, Paul (2011-12-05). "Team sees biggest black holes yet". bbc.co.uk. https://www.bbc.co.uk/news/science-environment-16034045.
- ↑ "NGC 3842". http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC%203842.
- ↑ "Are You Ready, Willing, and Abell? - Sky & Telescope" (in en-US). Sky & Telescope. 2017-04-26. http://www.skyandtelescope.com/observing/are-you-ready-willing-and-abell/.
- ↑ "Record massive black holes discovered lurking in monster galaxies" (in en-US). Berkeley News. 2011-12-05. http://news.berkeley.edu/2011/12/05/record-black-holes-bigger-than-our-solar-system/.
External links
Coordinates: 
11h 40m 44.2s, +22° 25′ 46″
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