NGC 3155
Galaxy NGC 3155 / NGC 3194 |
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NGC 3155 | |
AladinLite | |
Constellation | Dragon |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 10 h 17 m 39.85 s |
declination | + 74 ° 20 ′ 50.6 ″ |
Appearance | |
Morphological type | S? |
Brightness (visual) | 12.9 mag |
Brightness (B-band) | 13.8 mag |
Angular expansion | 1.0 '× 0.5' |
Position angle | 41 ° |
Surface brightness | 12.0 mag / arcmin² |
Physical data | |
Affiliation | NGC 3147 group LGG 193 |
Redshift | 0.009820 ± 0.000010 |
Radial velocity | 2944 ± 3 km / s |
Stroke distance v rad / H 0 |
(137 ± 9) · 10 6 ly (42.1 ± 2.9) Mpc |
history | |
discovery | Wilhelm Herschel |
Discovery date | April 2, 1801 |
Catalog names | |
NGC 3155 • NGC 3194 • UGC 5538 • PGC 30064 • CGCG 351-012 • MCG + 12-10-026 • IRAS 10133 + 7436 • 2MASX J10173987 + 7420504 • GC 2033 • H III 965 • h 676 • GALEX ASC J101739.79 +742052.6 • LDCE 719 NED002 |
NGC 3155 = NGC 3194 is a galaxy in the constellation Dragon in the northern sky . It is estimated to be 137 million light years from the Milky Way and about 40,000 light years across. It is a member of the NGC 3147 group of four galaxies ( LGG 193 ).
In the same area of the sky are u. a. the galaxies NGC 3144 and NGC 3147 .
The object was discovered on April 2, 1801 by the German-British astronomer Wilhelm Herschel , which later led to the entry NGC 3194 . Since Wilhelm Herschel's position information for this observation night was affected by major systematic errors, the object was recorded by John Herschel as a new object on September 2, 1828 and later led to the entry NGC 3155 .