NGC 7755
Galaxy NGC 7755 |
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AladinLite | |
Constellation | sculptor |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 23 h 47 m 51.7 s |
declination | -30 ° 31 ′ 19 ″ |
Appearance | |
Morphological type | SB (r) bc / HII |
Brightness (visual) | 11.7 mag |
Brightness (B-band) | 12.4 mag |
Angular expansion | 3.80 × 2.8 |
Position angle | 20 ° |
Surface brightness | 14.1 mag / arcmin² |
Physical data | |
Redshift | 0.009867 ± 0.000010 |
Radial velocity | 2958 ± 3 km / s |
Stroke distance v rad / H 0 |
(133 ± 9) · 10 6 ly (40.7 ± 2.8) Mpc |
diameter | 150,000 ly |
history | |
discovery | John Herschel |
Discovery date | September 27, 1834 |
Catalog names | |
NGC 7755 • PGC 72444 • ESO 471-G020 • MCG -05-56-014 • IRAS 23452-3048 • 2MASX J23475176-3031195 • SGC 234515-3048.0 • |
NGC 7755 is a bar-spiral galaxy with extensive star formation regions of the Hubble type SBbc in the Sculptor constellation in the southern sky . It is around 133 million light years away from the Milky Way and has a diameter of around 150,000 light years .
The type II supernova SN 2004cx was observed here.
The object was discovered by John Herschel on September 27, 1834 .