NGC 555
| Galaxy NGC 555 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 27 m 11.8 s |
| declination | -22 ° 45 ′ 44 ″ |
| Appearance | |
| Morphological type | (R:) SB (r) 0 / a |
| Brightness (visual) | 14.4 mag |
| Brightness (B-band) | 15.3 mag |
| Angular expansion | 0.7 ′ × 0.6 ′ |
| Position angle | 13 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.034137 +/- 0.000150 |
| Radial velocity | 10234 ± 45 km / s |
|
Stroke distance v rad / H 0 |
(457 ± 32) · 10 6 ly (140.0 ± 9.8) Mpc |
| history | |
| discovery | Frank Muller |
| Discovery date | 1886 |
| Catalog names | |
| NGC 555 • PGC 5419 • ESO 476-012 • MCG -04-04-014 • 2MASX J01271185-2245439 • SGC 012448-2301.3 • NPM1G -23.0003 • USGC S051 NED01 | |
NGC 555 is a lenticular galaxy of the Hubble type SB0 / a in the constellation Whale south of the ecliptic . It is estimated to be 457 million light years away from the Milky Way and has a diameter of around 50,000 ly.
In the same area of the sky are the galaxies NGC 554 , NGC 556 , NGC 578 , among others .
The object was discovered in 1886 by the American astronomer Frank Muller .