NGC 217

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Galaxy
NGC 217
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LEDA 3368365, LEDA 2800505 (ro) & LEDA 2800509 [1] (u) SDSS holder
LEDA 3368365 , LEDA 2800505 (ro) & LEDA 2800509 (u) SDSS mount
AladinLite
Constellation whale
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 00 h 41 m 33.9 s
declination -10 ° 01 ′ 17 ″
Appearance
Morphological type S0 / a: / sp  
Brightness  (visual) 12.6 mag
Brightness  (B-band) 13.5 likes
Angular expansion 2.8 ′ × 0.6 ′
Position angle 115 °
Surface brightness 13.0 mag / arcmin²
Physical data
Affiliation Abell 85
NGC 151 group
LGG 8  
Redshift 0.013262 ± 0.000033  
Radial velocity 3976 ± 10 km / s  
Stroke distance
v rad  / H 0 		(180 ± 13)  x  10 6  ly
(55.2 ± 3.9)  Mpc 
history
discovery Wilhelm Herschel
Discovery date November 28, 1785
Catalog names
NGC  217 • PGC  2482 • MCG  -02-02-085 • IRAS  00390-1017 • 2MASX  J00413390-1001169 • GC  114 • H  II 480 • h  48 • GALEX ASC J004133.70-100116.0 • NSA 153631

NGC 217 is a lenticular galaxy of the Hubble type S0 / a in the constellation Whale south of the ecliptic . It is an estimated 180 million light-years from the Milky Way and about 145,000 light-years across.
In the same area of ​​the sky is u. a. the galaxy NGC 195 .

The object was discovered on November 28, 1785 by the German-British astronomer Wilhelm Herschel .

Web links

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e SEDS : NGC 217
  4. ↑ Seligman