NGC 822

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Galaxy
NGC 822
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NGC 822 [1]
NGC 822
AladinLite
Constellation Phoenix
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 02 h 06 m 39.14 s
declination -41 ° 09 ′ 24.3 ″
Appearance
Morphological type E +  
Brightness  (visual) 13.1 mag
Brightness  (B-band) 14.1 mag
Angular expansion 1.1 ′ × 0.6 ′
Position angle 77 °
Surface brightness 12.7 mag / arcmin²
Physical data
Affiliation NGC 862 group
LGG 50  
Redshift 0.018112 ± 0.000063  
Radial velocity 5430 ± 19 km / s  
Stroke distance
v rad  / H 0 		(239 ± 17)  x  10 6  ly
(73.2 ± 5.1)  Mpc 
history
discovery John Herschel
Discovery date September 5, 1834
Catalog names
NGC  822 • PGC  008 055 • ESO  020436-4123.7 • MCG  -07-05-008 • 2MASX  J02063913-4109243 • SGC  020436-4123.7 • GC  490 • h  2461 • • GALEXASC J020639.24-410926.5 LDCE 143 NED003 • WISEA J020639.14 -410924.1

NGC 822 is an elliptical galaxy of Hubble type E5 in the constellation Phoenix on southern sky . It is an estimated 239 million light years from the Milky Way and about 80,000 light years in diameter. Together with NGC 862 and PGC 8028 , it forms the small NGC 862 group ( LGG 50 ).

The object was discovered on September 5, 1834 by the astronomer John Herschel .

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 : NGC 822
  4. ^ VizieR
  5. ↑ Seligman