IC 1785

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Galaxy
IC 1785
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IC 1785 & IC 1784 [1]
IC 1785 & IC 1784
AladinLite
Constellation triangle
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 02 h 16 m 21.041 s
declination + 32 ° 39 ′ 59.49 ″
Appearance
Morphological type E.  
Brightness  (visual) 14.7 mag
Brightness  (B-band) 15.7 mag
Angular expansion 0.90 'x 0.4'
Position angle 144 °
Surface brightness 13.7 mag / arcmin²
Physical data
Affiliation IC 1784 group
LGG 55  
Redshift 0.015869 ± 0.000157  
Radial velocity 4757 ± 47 km / s  
Stroke distance
v rad  / H 0 		(218 ± 15)  x  10 6  ly
(66.7 ± 4.7)  Mpc 
history
discovery Stéphane Javelle
Discovery date January 20, 1898
Catalog names
IC  1785 • PGC  8682 • CGCG  504-044 • MCG  + 05-06-021 • 2MASX  J02162102 + 3239594 • KPG 61B • LDCE 157 NED002 • NSA 131561 • WISEA J021621.00 + 323959.5

IC 1785 is an elliptical galaxy of the Hubble type E / S0 in the constellation Triangle in the northern sky . It is around 218 million light years away from the Milky Way and has a diameter of around 550,000 light years. Together with IC 1784 it forms the gravitationally bound galaxy pair KPG 61 and it is considered a member of the IC 1784 group ( LGG 55 ).
In the same area of ​​the sky is u. a. the galaxy IC 1789 .

The object was discovered by Stéphane Javelle on January 20, 1898 .

See also

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 : IC 1785
  4. ^ VizieR
  5. ↑ Seligman