NGC 857

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Galaxy
NGC 857
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NGC 857 [1]
NGC 857
AladinLite
Constellation Chemical furnace
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 02 h 12 m 36.97 s
declination -31 ° 56 ′ 40.6 ″
Appearance
Morphological type SA (rl) 0 ^ +  
Brightness  (visual) 12.4 mag
Brightness  (B-band) 13.4 mag
Angular expansion 1.5 ′ × 1.3 ′
Position angle 92 °
Surface brightness 13.0 mag / arcmin²
Physical data
Affiliation IC 1788 group
LGG 52  
Redshift 0.011695 ± 0.000077  
Radial velocity 3506 ± 23 km / s  
Stroke distance
v rad  / H 0 		(154 ± 11)  ·  10 6  ly
(47.1 ± 3.3)  Mpc 
history
discovery John Herschel
Discovery date November 18, 1835
Catalog names
NGC  857 • PGC  8455 • ESO  415-006 • MCG  -05-06-008 • 2MASX  J02123698-3156404 • SGC  021026-3210.7 • GALEX ASC J021236.91-315643.0 • LDCE 150 NED002 • WISEA J021236.94-315640.5

NGC 857 is a lens-shaped galaxy with extensive star formation regions of the Hubble type S0 in the constellation Fornax in the southern sky . It is an estimated 154 million light years away from the Milky Way and about 65,000 light years in diameter. Together with three other galaxies, it forms the IC 1788 group ( LGG 52 ).

The object was discovered by John Herschel on November 18, 1835 .

Web links

Commons : NGC 857  - collection of images, videos, and audio files

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e f SEDS : NGC 857
  4. ^ VizieR
  5. ↑ Seligman