NGC 4661

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Galaxy
NGC 4661
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AladinLite
Constellation centaur
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 12 h 45 m 14.9 s
declination -40 ° 49 ′ 27 ″
Appearance
Morphological type E +:  
Brightness  (visual) 13.5 likes
Brightness  (B-band) 14.5 mag
Angular expansion 1.2 ′ × 0.4 ′
Position angle 121 °
Surface brightness 12.8 mag / arcmin²
Physical data
Affiliation NGC 4645 group
LGG 301  
Redshift 0.008362 ± 0.000150  
Radial velocity 2507 ± 45 km / s  
Stroke distance
v rad  / H 0
(104 ± 8)  ·  10 6  ly
(31.9 ± 2.3)  Mpc 
history
discovery John Herschel
Discovery date June 5, 1834
Catalog names
NGC  4660 • 4650B  • PGC  42966 • ESO  322-071 • 322-072 • MCG  -07-26-039 • 2MASX  J12451495-4049272 • SGC  124230-4033.0 • GC  3194 • h  3415 • GALEX ASC J124514.69-404925.3 • LDCE 916 NED063

NGC 4661 (also NGC 4650B ) is an elliptical galaxy of the Hubble type E / S0 in the constellation Centaur in the southern sky . It is estimated to be 104 million light years from the Milky Way and about 40,000 light years in diameter.

In the same area of ​​the sky are u. a. the galaxies NGC 4616 , NGC 4622 , NGC 4645 , NGC 4650 .

The object was discovered by John Herschel on June 5, 1834 .

Web links

Individual evidence

  1. a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b c d e SEDS : NGC 4661
  3. ^ VizieR
  4. Seligman