NGC 1657

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Galaxy
NGC 1657
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NGC 1657 [1]
NGC 1657
AladinLite
Constellation Eridanus
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 04 h 46 m 07.26 s
declination -02 ° 04 ′ 38.2 ″
Appearance
Morphological type SAB (rs) bc  
Brightness  (visual) 13.8 mag
Brightness  (B-band) 14.6 mag
Angular expansion 1.2 ′ × 0.8 ′
Position angle 150 °
Surface brightness 13.3 mag / arcmin²
Physical data
Affiliation WBL 108  
Redshift 0.014357 ± 0.000007  
Radial velocity 4304 ± 2 km / s  
Stroke distance
v rad  / H 0 		(189 ± 13)  ·  10 6  ly
(57.9 ± 4.1)  Mpc 
history
discovery Édouard Stephan
Discovery date December 21, 1881
Catalog names
NGC  1657 • UGC  3156 • PGC  15958 • CGCG  394-005 • MCG  + 00-13-004 • 2MASX  J04460725-0204381 ​​• HIPASS J0446-02 • WISEA J044607.28-020438.0

NGC 1657 is a faint barred spiral galaxy of the Hubble type SBbc in the constellation Eridanus in the southern sky . It is an estimated 189 million light years from the Milky Way and about 65,000 light years across .

In the same area of ​​the sky are u. a. the galaxies NGC 1653 , NGC 1654 , NGC 1661 .

The object was discovered by Édouard Stephan on December 21, 1881 .

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 1657
  4. ↑ Seligman