NGC 4978
| Galaxy NGC 4978 |
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|---|---|
![NGC 4978 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC4978_-_SDSS_DR14.jpg)
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| NGC 4978 SDSS image | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 13 h 07 m 50.530 s |
| declination | + 18 ° 24 ′ 55.80 ″ |
| Appearance | |
| Morphological type | S0 / a |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.1 mag |
| Angular expansion | 1.5 ′ × 0.8 ′ |
| Position angle | 142 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.021582 ± 0.000147 |
| Radial velocity | 6470 ± 44 km / s |
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Stroke distance v rad / H 0 |
(289 ± 20) x 10 6 ly (88.5 ± 6.2) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | March 23, 1827 |
| Catalog names | |
| NGC 4978 • UGC 8212 • PGC 45494 • CGCG 101-004 • MCG + 03-34-002 • 2MASX J13075053 + 1824560 • GC 3415 • h 1535 • GALEX ASC J130750.53 + 182456.4 • NSA 117994 • WISEA J130750.53 + 182455.8 | |
NGC 4978 is a 13.2 mag bright lens-shaped galaxy of the Hubble-type S0 / a in the constellation Haar der Berenike in the northern sky . It is estimated to be 289 million light years from the Milky Way and about 130,000 light years in diameter . The galaxy is considered a member of the Coma cluster of galaxies .
The object was discovered by John Herschel on March 23, 1827 .
Web links
- NGC 4978. SIMBAD , accessed February 23, 2015 .
- NGC 4978. DSO Browser, accessed February 23, 2015 .
- Auke Slotegraaf : NGC 4978. Deep Sky Observer's Companion, accessed on February 23, 2015 .