NGC 387
| Galaxy data from NGC 387 |
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|---|---|
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| The galaxy NGC 387 surrounded by the galaxies NGC 383 , NGC 382 and NGC 386 (clockwise), SDSS image | |
| AladinLite | |
| Constellation | fishes |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 01 h 07 m 33.0 s |
| declination | + 32 ° 23 ′ 28 ″ |
| Appearance | |
| Morphological type | E. |
| Brightness (visual) | 15.5 mag |
| Brightness (B-band) | 16.5 mag |
| Angular expansion | 0.4 ′ × 0.4 ′ |
| Surface brightness | 13.6 mag / arcmin² |
| Physical data | |
| Redshift | 0.015701 ± 0.000077 |
| Radial velocity | 4707 ± 23 km / s |
|
Stroke distance v rad / H 0 |
(217 ± 15) · 10 6 ly (66.6 ± 4.7) Mpc |
| history | |
| discovery | Lawrence Parsons |
| Discovery date | December 10, 1873 |
| Catalog names | |
| NGC 387 • PGC 3987 • 2MASX J01073307 + 3223282 • Arp 331 • GC 5149 • GALEX ASC J010732.91 + 322328.2 • NSA 128592 | |
NGC 387 is an elliptical galaxy from the Hubble type E0 in the constellation fish on the ecliptic . It is estimated to be 217 million light years from the Milky Way and about 25,000 light years across.
Together with NGC 375 , NGC 379 , NGC 380 , NGC 382 , NGC 383 , NGC 384 , NGC 385 , NGC 386 and NGC 388 , it forms the galaxy chain Arp 331 .
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This group of galaxies belongs to the class chains of galaxies .
The object was discovered on December 10, 1873 by the Irish astronomer Lawrence Parsons .
literature
- Jeff Kanipe and Dennis Webb: The Arp Atlas of Peculiar Galaxies - A Chronicle and Observer's Guide " , Richmond 2006, ISBN 978-0-943396-76-7