NGC 2984
Galaxy NGC 2984 / IC 556 |
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NGC 2984 & LEDA 213628 (ul) SDSS image | |
AladinLite | |
Constellation | lion |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 09 h 43 m 40.380 s |
declination | + 11 ° 03 ′ 39.10 ″ |
Appearance | |
Morphological type | S0? |
Brightness (visual) | 13.4 mag |
Brightness (B-band) | 14.4 mag |
Angular expansion | 0.7 ′ × 0.7 ′ |
Surface brightness | 12.5 mag / arcmin² |
Physical data | |
Redshift | 0.020768 ± 0.000067 |
Radial velocity | 6226 ± 20 km / s |
Stroke distance v rad / H 0 |
(273 ± 19) x 10 6 ly (83.7 ± 5.9) Mpc |
history | |
discovery | Wilhelm Herschel |
Discovery date | March 15, 1784 |
Catalog names | |
NGC 2984 • IC 556 • UGC 5200 • PGC 27838 • CGCG 063-053 • MCG + 02-25-025 • 2MASX J09434038 + 1103387 • GC 1912 • H III 34 • h 633 • NSA 157407 • LDCE 667 NED007 • WISEA J094340. 38 +110338.9 |
NGC 2984 = IC 556 is a lens-shaped galaxy of the Hubble-type S0 in the constellation Leo at the ecliptic . It is estimated to be 273 million light years from the Milky Way and about 60,000 light years across.
The galaxies IC 552 and IC 557 are located in the same area of the sky .
The object was discovered on March 15, 1784 by the astronomer Wilhelm Herschel .