NGC 690

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Galaxy
NGC 690
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NGC 690 [1] SDSS image
NGC 690 SDSS image
AladinLite
Constellation whale
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 01 h 47 m 48.08 s
declination -16 ° 43 ′ 19.2 ″
Appearance
Morphological type SAB (s) c:  
Brightness  (visual) 14.5 mag
Brightness  (B-band) 15.2 mag
Angular expansion 1.2 ′ × 0.8 ′
Position angle 145 °
Surface brightness 14.3 mag / arcmin²
Physical data
Redshift 0.017212 ± 0.000033  
Radial velocity 5160 ± 10 km / s  
Stroke distance
v rad  / H 0
(230 ± 16)  x  10 6  ly
(70.6 ± 4.9)  Mpc 
history
discovery Francis P. Leavenworth
Discovery date November 9, 1885
Catalog names
NGC  690 • PGC  6587 • MCG  -03-05-021 • 2MASX  J01474807-1643198 • SGC  014524-1658.2 • 2MASS J01474804-1643193 • WISEA J014748.11-164317.3 •

NGC 690 is a barred spiral galaxy of the Hubble type SBc in the constellation Whale south of the ecliptic . It is estimated to be 230 million light years from the Milky Way and about 80,000 light years in diameter .

The object was discovered on November 9, 1885 by the American astronomer Francis Preserved Leavenworth .

Web links

Individual evidence

  1. ^ Aladin Lite
  2. a b c d NASA / IPAC EXTRAGALACTIC DATABASE
  3. a b c d e f SEDS : NGC 690
  4. Seligman