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physical object > natural object > celestial body > collection of stars > collection of galaxies > galaxy cluster > galaxy group > compact group |
compact group comparison table |
Subject | has number of galaxie | has definition | is part of | has brightest member |
---|---|---|---|---|
Seyfert's Sextet | 6 | A compact group of galaxies surrounding NGC 6027. It has both spiral and irregular members. | Serpens | NGC 6027 |
Stephan's Quartet | 4 | |||
Stephan's Quintet | 5 | A highly disturbed cluster of five peculiar galaxies (NGC 7317, NGC 7318A, NGC 7318B, NGC 7319, NGC 7320) in Pegasus which seem to exhibit gaseous connecting bridges. Four have large redshifts (of the order of 5700-6700 km s-1), but the fifth member (NGC 7320) has a much smaller redshift (800 km s-1). Discovered in 1877 by M. E. Stephan. | Pegasus |
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