IC 4999
| Galaxy IC 4999 |
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|---|---|
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| AladinLite | |
| Constellation | Capricorn |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 20 h 23 m 56.3 s |
| declination | -26 ° 00 ′ 54 ″ |
| Appearance | |
| Morphological type | SAB (rs) d: |
| Brightness (visual) | 12.8 mag |
| Brightness (B-band) | 13.5 likes |
| Angular expansion | 1.80 'x 1.1' |
| Position angle | 95 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Affiliation | SSRS group 73 NGC 6907 group LGG 436 |
| Redshift | 0.010526 ± 0.000020 |
| Radial velocity | 3156 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(144 ± 10) · 10 6 ly (44.1 ± 3.1) Mpc |
| history | |
| discovery | Edward E. Barnard |
| Catalog names | |
| IC 4999 • PGC 64613 • ESO 527-021 • MCG -04-48-004 • IRAS 20209-2610 • 2MASX J20235633-2600538 • SGC 202056-2610.6 • HIPASS J2024-25 • LDCE 1397 NED002 | |
IC 4999 is a bar-spiral galaxy of the Hubble type SBc in the constellation Capricornus on the ecliptic . It is estimated to be 144 million light years from the Milky Way and about 75,000 light years in diameter.
Together with NGC 6907 and IC 5005 , it forms the NGC 6907 group or LGG 436 .
The object was discovered by Edward Emerson Barnard .