NGC 842

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Galaxy
NGC 842
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SDSS recording
SDSS recording
AladinLite
Constellation whale
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 02 h 09 m 50.8 s
declination -07 ° 45 ′ 45 ″
Appearance
Morphological type SAB0 (r)?  
Brightness  (visual) 12.7 mag
Brightness  (B-band) 13.7 mag
Angular expansion 1.6 ′ × 0.8 ′
Position angle 150 °
Surface brightness 12.9 mag / arcmin²
Physical data
Affiliation LGG 044  
Redshift 0.012866 ± 0.000103  
Radial velocity 3857 ± 31 km / s  
Stroke distance
v rad  / H 0
(173 ± 12)  ·  10 6  ly
(52.9 ± 3.7)  Mpc 
history
discovery John Herschel
Discovery date January 8, 1831
Catalog names
NGC  842 • PGC  8258 • MCG  -01-6-55 • 2MASX  J02095079-0745446 • GC  500 • h  203 • LDCE 0138 NED007

NGC 842 is the name of a lenticular galaxy of the Hubble type S0 in the constellation Whale in the New General Catalog . It is an estimated 173 million light years from the Milky Way . Together with NGC 829 , NGC 830 , NGC 788 and IC 183 , it forms the NGC 788 group .

The galaxy was by astronomer John Herschel using on 8 January 1831 of a 18.7-inch - telescope discovered.

Individual evidence

  1. a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b c d e f SEDS : NGC 842
  3. Seligman