NGC 4661
Galaxy NGC 4661 |
|
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AladinLite | |
Constellation | centaur |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 12 h 45 m 14.9 s |
declination | -40 ° 49 ′ 27 ″ |
Appearance | |
Morphological type | E +: |
Brightness (visual) | 13.5 likes |
Brightness (B-band) | 14.5 mag |
Angular expansion | 1.2 ′ × 0.4 ′ |
Position angle | 121 ° |
Surface brightness | 12.8 mag / arcmin² |
Physical data | |
Affiliation |
NGC 4645 group LGG 301 |
Redshift | 0.008362 ± 0.000150 |
Radial velocity | 2507 ± 45 km / s |
Stroke distance v rad / H 0 |
(104 ± 8) · 10 6 ly (31.9 ± 2.3) Mpc |
history | |
discovery | John Herschel |
Discovery date | June 5, 1834 |
Catalog names | |
NGC 4660 • 4650B • PGC 42966 • ESO 322-071 • 322-072 • MCG -07-26-039 • 2MASX J12451495-4049272 • SGC 124230-4033.0 • GC 3194 • h 3415 • GALEX ASC J124514.69-404925.3 • LDCE 916 NED063 |
NGC 4661 (also NGC 4650B ) is an elliptical galaxy of the Hubble type E / S0 in the constellation Centaur in the southern sky . It is estimated to be 104 million light years from the Milky Way and about 40,000 light years in diameter.
In the same area of the sky are u. a. the galaxies NGC 4616 , NGC 4622 , NGC 4645 , NGC 4650 .
The object was discovered by John Herschel on June 5, 1834 .
Web links
- NGC 4661. SIMBAD , accessed January 30, 2015 .
- NGC 4661. DSO Browser, accessed January 30, 2015 .
- Auke Slotegraaf : NGC 4661. Deep Sky Observer's Companion, accessed January 30, 2015 .