NGC 4973
| Galaxy NGC 4973 / IC 847 |
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![NGC 4973 with LEDA 2448877 (o) & LEDA 2448354 (ro) [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC4973_-_SDSS_DR14.jpg)
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| NGC 4973 with LEDA 2448877 (o) & LEDA 2448354 (ro) SDSS image | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 13 h 05 m 32.154 s |
| declination | + 53 ° 41 ′ 06.54 ″ |
| Appearance | |
| Morphological type | E / S0 |
| Brightness (visual) | 13.9 likes |
| Brightness (B-band) | 14.9 mag |
| Angular expansion | 0.7 ′ × 0.7 ′ |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 430 |
| Redshift | 0.029737 ± 0.000063 |
| Radial velocity | 8915 ± 19 km / s |
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Stroke distance v rad / H 0 |
(402 ± 28) x 10 6 ly (123.4 ± 8.6) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 14, 1789 |
| Catalog names | |
| NGC 4973 • IC 847 • PGC 45280 • CGCG 270-049 • CGCG 271-005 • MCG + 09-22-006 • 2MASX J13053216 + 5341069 • GC 3410 • H III 781 • GALEX ASC J130532.06 + 534106.2 • LDCE 942 NED001 • NSA 42751 • WISEA J130532.17 + 534106.6 | |
NGC 4973 = IC 847 is a 13.9 mag bright elliptical galaxy of the Hubble type E0 in the constellation Great Bear in the northern sky . It is estimated to be 402 million light years from the Milky Way and about 80,000 light years in diameter .
The galaxies NGC 4967 and NGC 4974 are located in the same area of the sky .
Together with NGC 4967 and NGC 4974 , they were discovered as the brightest members of a small group of six or seven galaxies in a single observation on April 14, 1789 by Wilhelm Herschel with an 18.7-inch reflector telescope, the “Two nebulae [NGC 4973 & NGC 4974] Both vF, S. Place is that of second, the other is 3 'or 4' Sp "noted.