IC 2744

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Galaxy
IC 2744
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IC 2744 [1]
IC 2744
AladinLite
Constellation Big Bear
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 11 h 21 m 42.506 s
declination + 34 ° 21 ′ 46.06 ″
Appearance
Morphological type S0?  
Brightness  (visual) 14.5 mag
Brightness  (B-band) 15.5 mag
Angular expansion 0.50 '× 0.5'
Surface brightness 12.9 mag / arcmin²
Physical data
Affiliation WBL 325
Abell 1228  
Redshift 0.035474 ± ​​0.000028  
Radial velocity 10,635 ± 8 km / s  
Stroke distance
v rad  / H 0 		(475 ± 33)  ·  10 6  ly
(145.6 ± 10.2)  Mpc 
history
discovery Stéphane Javelle
Discovery date May 22, 1903
Catalog names
IC  2744 • PGC  34833 • CGCG  185-045 • MCG  + 06-25-052 • 2MASX  J11214248 + 3421455 • NSA 139245 • USGC U379 NED04 • WISEA J112142.51 + 342146.0

IC 2744 is a lenticular galaxy of the Hubble type S0 in the constellation Great Bear in the northern sky . It is an estimated 475 million light years from the Milky Way and about 70,000 light years in diameter .
The galaxies IC 2735 , IC 2738 , IC 2751 are located in the same area of ​​the sky .

The object was discovered on May 22, 1903 by the French astronomer Stéphane Javelle .

See also

Web links

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e SEDS : IC 2744
  4. ↑ Seligman