NGC 984
| Galaxy NGC 984 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Aries |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 34 m 43.1 s |
| declination | + 23 ° 24 ′ 47 ″ |
| Appearance | |
| Morphological type | SA0 + / AGN |
| Brightness (visual) | 13.6 mag |
| Brightness (B-band) | 14.5 mag |
| Angular expansion | 2 ′ × 1.2 ′ |
| Position angle | 120 ° |
| Surface brightness | 14.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.014517 ± 0.000030 |
| Radial velocity | 4352 ± 9 km / s |
|
Stroke distance v rad / H 0 |
(198 ± 14) · 10 6 ly (60.7 ± 4.3) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | December 13, 1871 |
| Catalog names | |
| NGC 984 • UGC 2059 • PGC 9819 • CGCG 484-010 • MCG + 04-07-012 • 2MASX J02344313 + 2324472 • NVSS J023443 + 232446 | |
NGC 984 is a lenticular galaxy with an active nucleus of the Hubble type S0 / a in the constellation Aries on the ecliptic . It is estimated to be 198 million light-years away from the Milky Way and has a diameter of about 115,000 ly.
In the same area of the sky there are u. a. the galaxy IC 1809 .
The galaxy was discovered on December 13, 1871 by the astronomer Édouard Stephan .
Web links
Commons : NGC 984 - collection of images, videos, and audio files
