NGC 87
Galaxy data from NGC 87 |
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Roberts Quartet consisting of NGC 87 (top right), NGC 88 (middle), NGC 89 (bottom) and NGC 92 (top left). | |
AladinLite | |
Constellation | Phoenix |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 00 h 21 m 14.3 s |
declination | -48 ° 37 ′ 42 ″ |
Appearance | |
Morphological type | IBm pec HII |
Brightness (visual) | 14.1 mag |
Brightness (B-band) | 14.7 mag |
Angular expansion | 0.9 ′ × 0.7 ′ |
Position angle | 171 ° |
Surface brightness | 13.4 mag / arcmin² |
Physical data | |
Affiliation | Roberts Quartet |
Redshift | 0.011391 ± 0.000077 |
Radial velocity | 3415 ± 23 km / s |
Stroke distance v rad / H 0 |
(150 ± 10) x 10 6 ly (45.9 ± 3.2) Mpc |
history | |
discovery | JFW Herschel |
Discovery date | September 30, 1834 |
Catalog names | |
NGC 87 • PGC 1357 • ESO 194-8 • SGC 001848-4854.4 • GC 43 • h 2316 • AM 0018-485 |
NGC 87 is an irregular galaxy in the constellation Phoenix . It is about 150 million light years away from the Milky Way , with a diameter of about 35,000 light years. NGC 87 is part of a group of galaxies called the Roberts Quartet , which also includes NGC 88 , NGC 89, and NGC 92 .
discovery
The galaxy NGC 87 was discovered on September 30, 1834 by the British astronomer John Frederick William Herschel .