IC 4

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Galaxy
IC 4
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SDSS recording
SDSS recording
AladinLite
Constellation Pegasus
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 00 h 13 m 26.9 s
declination + 17 ° 29 ′ 11 ″
Appearance
Morphological type Sc:  
Brightness  (visual) 13.1 mag
Brightness  (B-band) 13.8 mag
Angular expansion 1 ′ × 0.9 ′
Position angle 10 °
Surface brightness 12.9 mag / arcmin²
Physical data
Redshift 0.016692 +/- 0.000033  
Radial velocity 5004 +/- 10 km / s  
Stroke distance
v rad  / H 0
(230 ± 16)  x  10 6  ly
(70.6 ± 4.9)  Mpc 
history
discovery Frederick Pechüle
Discovery date September 12, 1893
Catalog names
IC  4 • UGC  123 • PGC  897 • CGCG  456-040 • MCG  + 03-01-29 • IRAS  00108 + 1712 • KUG  0010 + 172 • 2MASX  J00132695 + 1729111 • GALEX ASC J001326.89 + 172911.9 • LDCE 11 NED001

IC 4 is a spiral galaxy of Hubble type Sc in the constellation Pegasus at the northern sky . It is estimated to be 230 million light-years away from the Milky Way and has a diameter of about 65,000 ly
. a. the galaxy NGC 57 .

The object was discovered by Frederick Pechüle on September 12, 1893 .

Web links

Individual evidence

  1. a b c d NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b c d e f SEDS : IC 4
  3. Seligman