IC 1785
Galaxy IC 1785 |
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IC 1785 & IC 1784 | |
AladinLite | |
Constellation | triangle |
Position equinox : J2000.0 , epoch : J2000.0 |
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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 .