NGC 4681
| Galaxy NGC 4681 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | centaur |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 47 m 28.8 s |
| declination | -43 ° 20 ′ 05 ″ |
| Appearance | |
| Morphological type | SA (s) a |
| Brightness (visual) | 12.7 mag |
| Brightness (B-band) | 13.5 likes |
| Angular expansion | 1.4 ′ × 1.2 ′ |
| Position angle | 166 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation |
IC 3370 group LGG 298 |
| Redshift | 0.011051 ± 0.000140 |
| Radial velocity | 3313 ± 42 km / s |
|
Stroke distance v rad / H 0 |
(140 ± 10) · 10 6 ly (42.9 ± 3.1) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | March 15, 1836 |
| Catalog names | |
| NGC 4681 • PGC 43166 • ESO 268-040 • MCG -07-26-046 • IRAS 12446-4303 • 2MASX J12472882-4320051 • SGC 124443-4303.7 • GC 3211 • h 3421 • GALEX ASC J124728.79-432003.6 • LDCE 916 NED071 | |
NGC 4681 is a 12.7 mag bright spiral galaxy of the Hubble type Sab in the constellation Centaur in the southern sky . It is an estimated 140 million light-years away from the Milky Way and about 65,000 light-years across.
The object was discovered on March 15, 1836 by John Herschel with an 18-inch reflector telescope, who described it as "pF, S, R, gbM, 15 arcseconds".