NGC 4987
| Galaxy NGC 4987 |
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|---|---|
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| SDSS | |
| AladinLite | |
| Constellation | Hunting dogs |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 07 m 59.0 s |
| declination | + 51 ° 55 ′ 45 ″ |
| Appearance | |
| Morphological type | E. |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.2 ′ × 0.7 ′ |
| Position angle | 35 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.015761 +/- 0.000080 |
| Radial velocity | 4725 +/- 24 km / s |
|
Stroke distance v rad / H 0 |
(215 ± 15) x 10 6 ly (66.0 ± 4.6) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 26, 1789 |
| Catalog names | |
| NGC 4987 • UGC 8216 • PGC 45502 • CGCG 271.13 • MCG + 09-22-015 • 2MASX J13075908 + 5155450 • GC 3424 • H II 815 • h 1542 • GALEX ASC J130759.07 + 515546.4 | |
NGC 4987 is a 13.4 mag bright elliptical galaxy of the Hubble type "E4" in the constellation Hounds in the northern sky . It is estimated to be 215 million light years from the Milky Way and about 75,000 ly in diameter.
The object was discovered on April 26, 1789 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "F, vS, stellar".