NGC 4251

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Galaxy
NGC 4251
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NGC 4251 [1]
NGC 4251
AladinLite
Constellation Berenike's hair
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 12 h 18 m 08.249 s
declination + 28 ° 10 ′ 31.41 ″
Appearance
Morphological type SB0?  
Brightness  (visual) 10.7 mag
Brightness  (B-band) 11.6 mag
Angular expansion 3.6 'x 1.5'
Position angle 100 °
Surface brightness 12.4 mag / arcmin²
Physical data
Affiliation NGC 4274 group
LGG 279  
Redshift 0.003556 ± 0.000017  
Radial velocity (1066 ± 5) km / s  
Stroke distance
v rad  / H 0 		(47 ± 3)  x  10 6  ly
(14.5 ± 1.0)  Mpc 
history
discovery William Herschel
Discovery date April 11, 1785
Catalog names
NGC  4251 • UGC  7338 • PGC  39492 • CGCG  158-060 • MCG  + 05-29-050 • 2MASX  J12180830 + 2810310 • GC  2836 • H  I 89 • h  1171 • 2MASS J12180833 + 2810312 • LDCE 867 NED098 • NSA 161428

NGC 4251 is a lenticular galaxy of the Hubble type SB0 in the constellation Coma Berenices in the northern sky . It is an estimated 47 million light years away from the Milky Way and about 50,000 light years in diameter. Together with 18 other galaxies, it forms the NGC 4274 group ( LGG 279 ).
In the same area of ​​the sky are u. a. the galaxies NGC 4211 , IC 777 , IC 3165 , IC 3168 .

The object was discovered by Wilhelm Herschel on April 11, 1785 .

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 4251
  4. ^ VizieR
  5. ↑ Seligman