NGC 5042
| Galaxy NGC 5042 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Water snake |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 15 m 31.0 s |
| declination | -23 ° 59 ′ 03 ″ |
| Appearance | |
| Morphological type | SBc |
| Brightness (visual) | 11.8 mag |
| Brightness (B-band) | 12.5 mag |
| Angular expansion | 4.2 ′ × 2.2 ′ |
| Position angle | 22 ° |
| Surface brightness | 14.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.004637 ± 0.000007 |
| Radial velocity | 1390 ± 2 km / s |
|
Stroke distance v rad / H 0 |
(56 ± 4) · 10 6 ly (17.3 ± 1.2) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | March 25, 1836 |
| Catalog names | |
| NGC 5042 • UGCA 340 • PGC 46126 • ESO 508-031 • MCG -04-31-043 • IRAS 13127-2343 • 2MASX J13153130-2358565 • SGC 131247-2343.2 • GC 3463 • h 3477 • HIPASS J1315-23 • LDCE 964 NED001 | |
NGC 5042 is an 11.8 mag bright bar-spiral galaxy of the Hubble type SBc in the constellation of the Water Snake south of the ecliptic . It is estimated to be 56 million light years from the Milky Way and about 75,000 ly in diameter.
The object was discovered on March 25, 1836 by John Herschel with an 18-inch reflector telescope, who described it as "F, L, R, vgvlbM, a star 9th mag 1 ′ north, precedes 10 seconds".