NGC 4198
Galaxy NGC 4198 |
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SDSS recording | |
AladinLite | |
Constellation | Big Bear |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 12 h 14 m 22.0 s |
declination | + 56 ° 00 ′ 41 ″ |
Appearance | |
Morphological type | S0 / a / LINER |
Brightness (visual) | 13.6 mag |
Brightness (B-band) | 14.5 mag |
Angular expansion | 1 ′ × 0.6 ′ |
Position angle | 130 ° |
Surface brightness | 13.2 mag / arcmin² |
Physical data | |
Redshift | 0.031178 ± 0.000117 |
Radial velocity | 9347 ± 35 km / s |
Stroke distance v rad / H 0 |
(421 ± 30) x 10 6 ly (129.2 ± 9.1) Mpc |
history | |
discovery | William Herschel |
Discovery date | April 14, 1789 |
Catalog names | |
NGC 4198 • IC 778 • UGC 7246 • PGC 39090 • CGCG 269-045 • MCG + 09-20-123 • 2MASX J12142200 + 5600410 • GC 2792 • H II 793 • h 1139 • GALEX ASC J121422.06 + 560040.1 |
NGC 4198 = IC 778 is a lenticular galaxy with an active nucleus of the Hubble type S0 / a in the constellation Great Bear in the northern sky . It is estimated to be 421 million light years from the Milky Way and about 125,000 light years across .
The galaxy NGC 4172 is located in the same area of the sky .
The object was discovered by Wilhelm Herschel on April 14, 1789 .