NGC 2984

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Galaxy
NGC 2984 / IC 556
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NGC 2984 & LEDA 213628 (ul) [1] [2] SDSS image
NGC 2984 & LEDA 213628 (ul) SDSS image
AladinLite
Constellation lion
Position
equinox :  J2000.0 , epoch : J2000.0
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 .

Web links

Individual evidence

  1. ↑ Simbad
  2. ^ Aladin Lite
  3. ↑ a b c d NASA / IPAC EXTRAGALACTIC DATABASE
  4. ↑ a b c d e SEDS : IC 556
  5. ↑ Seligman