HCG 87
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HCG 87 |
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Observation data (Epoch ) |
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Constellation(s): | Capricornus |
Right ascension: | 20h 48m 11.9ss[1] |
Declination: | -19° 50′ 35″[1] |
Number of galaxies: | ~5 |
Brightest member: | |
Other designations | |
See also: Galaxy groups and clusters, List of galaxy clusters |
HCG 87 is a compact group of galaxies listed in the Hickson Compact Group Catalogue. This group is about 400 million light-years away[citation needed] in the constellation Capricornus.
[edit] Members
Name | Type[2] | R.A. (J2000)[2] | Dec. (J2000)[2] | Redshift (km/s)[2] | Apparent Magnitude[2] |
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HCG 87a | S0 pec | 20h 48m 15.0s | -19° 50′ 58″ | 8443 ± 14 | 15.3 |
HCG 87b | SA(r)0 pec | 20h 48m 10.9s | -19° 51′ 23″ | 8740 ± 20 | 15.4 |
HCG 87c | Sb | 20h 48m 12.0s | -19° 49′ 56″ | 8914 ± 7 | 16.1 |
HCG 87d | Sd | 20h 48m 12.8s | -19° 50′ 46″ | 10200 ± 160 | 17.8 |
[edit] External links
- NASA APOD: Galaxy Group HCG 87 - July 31, 2003
- Close-ups of HCG 87
- Galactic Clusters
- Studies of Hickson Compact Groups