IC 4992
| Galaxy IC 4992 |
|
|---|---|
|
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| AladinLite | |
| Constellation | peacock |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 20 h 23 m 27.85 s |
| declination | -71 ° 33 ′ 53.7 ″ |
| Appearance | |
| Morphological type | SB (s) c? |
| Brightness (visual) | 13.8 mag |
| Brightness (B-band) | 14.5 mag |
| Angular expansion | 2.30 'x 0.2' |
| Position angle | 58 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Affiliation | Pavo group SSRS group 1 NGC 6876 group LGG 432 |
| Redshift | 0.013898 ± 0.000028 |
| Radial velocity | 4167 ± 8 km / s |
|
Stroke distance v rad / H 0 |
(181 ± 13) · 10 6 ly (55.5 ± 3.9) Mpc |
| history | |
| discovery | DeLisle Stewart |
| Discovery date | September 21, 1900 |
| Catalog names | |
| IC 4992 • PGC 64597 • ESO 073-042 • IRAS 20180-7143 • 2MASX J20232785-7133535 • SGC 201810-7143.5 • HIPASS J2024-71 • WISEA J202327.66-713354.0 | |
IC 4992 is a bar-spiral galaxy of the Hubble type SBc in the constellation Peacock in the southern sky . It is estimated to be 181 million light years from the Milky Way and about 130,000 light years across. She is considered a member of the ten galaxies counting NGC 6876 group ( LGG 432 ).
In the same area of the sky are u. a. the galaxies IC 4982 and IC 4985 .
The type IIP supernova SN 2010gw was observed here.
The object was discovered by DeLisle Stewart on September 21, 1900 .