NGC 2947

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Galaxy
NGC 2947 / IC 547 / IC 2494
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NGC 2947 DSS.jpg
AladinLite
Constellation Water snake
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 09 h 36 m 05.8 s
declination -12 ° 26 ′ 12 ″
Appearance
Morphological type SAB (r) bc  
Brightness  (visual) 12.4 mag
Brightness  (B-band) 13.2 mag
Angular expansion 1.5 '× 1.4'
Position angle 25 °
Surface brightness 13.1 mag / arcmin²
Physical data
Redshift 0.009356 ± 0.000020  
Radial velocity 2805 ± 6 km / s  
Stroke distance
v rad  / H 0
(117 ± 8)  x  10 6  ly
(35.9 ± 2.5)  Mpc 
history
discovery Francis P. Leavenworth
Discovery date May 6, 1886
Catalog names
NGC  2947 • IC  547 • IC 2494 • PGC  27309 • MCG  -02-25-004 • IRAS  09336-1212 • 2MASX  J09360583-1226120 • GALEX ASC J093605.83-122611.5 • LDCE 657 NED003

NGC 2947 = IC 547 = IC 2494 is a bar-spiral galaxy of the Hubble type SBbc in the constellation Hydra south of the ecliptic . It is estimated to be 117 million light years from the Milky Way and about 50,000 light years in diameter.

The property was discovered by Francis Preserved Leavenworth on May 6, 1886 .

Web links

Individual evidence

  1. a b c d NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b c d e f SEDS : NGC 2947
  3. Seligman