NGC 3997
| Galaxy NGC 3997 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | lion |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 57 m 48.2 s |
| declination | + 25 ° 16 ′ 14 ″ |
| Appearance | |
| Morphological type | SBb pec / HII |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.0 mag |
| Angular expansion | 1.6 ′ × 0.7 ′ |
| Position angle | 141 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 260 |
| Redshift | 0.015914 +/- 0.000017 |
| Radial velocity | 4771 +/- 5 km / s |
|
Stroke distance v rad / H 0 |
(212 ± 15) · 10 6 ly (65.0 ± 4.6) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | February 19, 1827 |
| Catalog names | |
| NGC 3997 • UGC 6942 • PGC 37629 • CGCG 127-114 • MCG + 04-28-102 • IRAS 11552 + 2532 • | |
NGC 3997 is a merging bar-spiral galaxy of the Hubble-type SBb / P in the constellation Leo on the ecliptic . It is an estimated 212 million light years from the Milky Way . Together with five other galaxies, it forms the NGC 3997 group ( LGG 260 ).
The object was discovered by John Herschel on February 19, 1827 .
NGC 3997 group ( LGG 260 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| NGC 3997 | PGC 37629 | 212 |
| NGC 3993 | PGC 37619 | 215 |
| NGC 3989 | PGC 37599 | 209 |
| IC 746 | PGC 37440 | 223 |
| PGC 37511 | CGCG 127-109 | |
| PGC 37703 | MCG + 04-28-109 |