NGC 4693
| Galaxy NGC 4693 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Dragon |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 47 m 09.2 s |
| declination | + 71 ° 10 ′ 34 ″ |
| Appearance | |
| Morphological type | Scd |
| Brightness (visual) | 13.3 mag |
| Brightness (B-band) | 14.0 mag |
| Angular expansion | 2.4 ′ × 0.5 ′ |
| Position angle | 34 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation |
NGC 4750 group LGG 303 |
| Redshift | 0.005571 ± 0.000013 |
| Radial velocity | 1670 ± 4 km / s |
|
Stroke distance v rad / H 0 |
(81 ± 6) · 10 6 ly (24.7 ± 1.7) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 7, 1793 |
| Catalog names | |
| NGC 4693 • UGC 7962 • PGC 43141 • CGCG 335-023 • MCG + 12-12-018 • IRAS F12452 + 7126 • 2MASX J12470913 + 7110341 • GC 3223 • H III 906 • HIJASS J1246 + 71 • LDCE 902 NED011 • HOLM 460A | |
NGC 4693 is a 13.3 likes bright spiral galaxy of Hubble type Scd in the constellation kite on the northern sky. It is estimated to be 81 million light years from the Milky Way and about 55,000 light years in diameter.
The object was discovered on April 7, 1793 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as “vF, E, 2 ′ long, 0.5 ′ broad”.