NGC 7766
Galaxy NGC 7766 |
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NGC 7768, LEDA 1798869 (o), NGC 7766 (m), LEDA 1797966 (u) | |
AladinLite | |
Constellation | Pegasus |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 23 h 50 m 55.9 s |
declination | + 27 ° 07 ′ 35 ″ |
Appearance | |
Morphological type | C. |
Brightness (visual) | 15.5 mag |
Brightness (B-band) | 16.5 mag |
Angular expansion | 0.5 'x 0.2' |
Position angle | 43 ° |
Surface brightness | 12.9 mag / arcmin² |
Physical data | |
Redshift | 0.027159 ± 0.000173 |
Radial velocity | 8142 ± 52 km / s |
Stroke distance v rad / H 0 |
(372 ± 26) x 10 6 ly (114.0 ± 8.0) Mpc |
history | |
discovery | Ralph Copeland |
Discovery date | October 9, 1872 |
Catalog names | |
NGC 7766 • PGC 72611 • CGCG 477-018 • MCG + 04-56-017 • 2MASX J23505589 + 2707347 • GALEX ASC J235055.89 + 270736.7 • HOLM 818D |
NGC 7766 is a compact galaxy of Hubble type C in the constellation Pegasus at the northern sky . It is an estimated 372 million light years away from the Milky Way and about 55,000 light years in diameter. Together with NGC 7765 , NGC 7767 and NGC 7768 , it forms the galaxy group Holm 818 .
The object was discovered by Ralph Copeland on October 9, 1872 .