NGC 4648
| Galaxy NGC 4648 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Dragon |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 41 m 44.4 s |
| declination | + 74 ° 25 ′ 15 ″ |
| Appearance | |
| Morphological type | SB (rs) 0 / a / LINER |
| Brightness (visual) | 11.9 likes |
| Brightness (B-band) | 12.9 mag |
| Angular expansion | 1.8 ′ × 1.2 ′ |
| Position angle | 70 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Affiliation |
NGC 4750 group LGG 303 |
| Redshift | 0.004717 ± 0.000060 |
| Radial velocity | 1414 ± 18 km / s |
|
Stroke distance v rad / H 0 |
(69 ± 5) · 10 6 ly (21.3 ± 1.5) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | November 22, 1797 |
| Catalog names | |
| NGC 4648 • UGC 7868 • PGC 42595 • MCG + 13-09-029 • 2MASX J12414441 + 7425151 • GC 3181 • H I 274 • h 1410 • ASC J124144.03 + 742515.2 • LDCE 902 NED010 | |
NGC 4648 is an elliptical galaxy with an active nucleus of the Hubble type E3 in the constellation Dragon in the northern sky . It is an estimated 69 million light years away from the Milky Way and about 35,000 light years across.
The object was discovered by William Herschel on November 22, 1797 .