IC 4638
Galaxy IC 4638 |
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IC 4638 | |
AladinLite | |
Constellation | Hercules |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 17 h 01 m 13.695 s |
declination | + 33 ° 30 ′ 47.47 ″ |
Appearance | |
Morphological type | E0 |
Brightness (visual) | 14.9 mag |
Brightness (B-band) | 15.6 mag |
Angular expansion | 0.80 'x 0.8' |
Surface brightness | 14.3 mag / arcmin² |
Physical data | |
Redshift | 0.037433 ± 0.000191 |
Radial velocity | 11222 ± 57 km / s |
Stroke distance v rad / H 0 |
(509 ± 36) · 10 6 Lj (156.0 ± 10.9) Mpc |
history | |
discovery | Sherburne W. Burnham |
Discovery date | April 15, 1899 |
Catalog names | |
IC 4638 • PGC 59446 • CGCG 197-026 • MCG + 06-37-021 • 2MASX J17011365 + 3330478 • 2MASS J17011369 + 3330475 • NSA 38899 • SDSS J170113.69 + 333047.4 • WISEA J170113.69 + 333047.5 |
IC 4638 is an elliptical galaxy with the Hubble type E0 in the constellation Hercules in the northern sky . It is estimated to be 509 million light-years from the Milky Way and about 120,000 light-years across.
The object was discovered on April 15, 1899 by Sherburne Wesley Burnham .