IC 2978

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Galaxy
IC 2978
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IC 2978 [1]
IC 2978
AladinLite
Constellation Big Bear
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 11 h 56 m 23.230 s
declination + 32 ° 02 ′ 19.40 ″
Appearance
Morphological type Sd  
Brightness  (visual) 14.6 mag
Brightness  (B-band) 15.3 mag
Angular expansion 1.1 ′ × 0.4 ′
Position angle 126 °
Surface brightness 13.6 mag / arcmin²
Physical data
Affiliation NGC 3995 group
LGG 259  
Redshift 0.010757 ± 0.000023  
Radial velocity 3225 ± 7 km / s  
Stroke distance
v rad  / H 0 		(144 ± 10)  ·  10 6  ly
(44.2 ± 3.1)  Mpc 
history
discovery Stephane Javelle
Discovery date June 12, 1896
Catalog names
IC  2978 • UGC  6915 • PGC  37515 • CGCG  157-057 • MCG  + 05-28-051 • KUG  1153 + 323 • 2MASX  J11562287 + 3202144 • GALEX ASC J115623.31 + 320220.0 • NSA 87612

IC 2978 is a bar-spiral galaxy of the Hubble type SBcd in the constellation Great Bear in the northern sky . It is estimated to be 144 million light years from the Milky Way and about 45,000 light years across. Together with NGC 3966 , it forms a gravitationally bound galaxy pair and is considered a member of the NGC 3995 group ( LGG 259 ).
In the same area of ​​the sky are u. a. the galaxies NGC 3991 , NGC 3994 , IC 2979 , IC 2981 .

The object was discovered by Stéphane Javelle on June 12, 1896 .

Web links

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e f SEDS : IC 2978
  4. ^ VizieR
  5. ↑ Seligman