Seyfert's Sextet

Seyfert's Sextet
Observation data (Epoch J2000)
Constellation(s)	Serpens
Right ascension	15h 59m 11.9s
Declination	+20° 45′ 31″
Brightest member	NGC 6027
Number of galaxies	4
Other designations
Serpens Sextet, HCG 79, UGC 10116, VV 115, VII Zw 631
See also: Galaxy groups, Galaxy clusters, List of galaxy clusters

Seyfert's Sextet is a group of galaxies about 190 million light-years away in the constellation Serpens. The group appears to contain six members, but one of the galaxies is a background object and another "galaxy" is actually a separated part of one of the other galaxies. The gravitational interaction among these galaxies should continue for hundreds of millions of years. Ultimately, the galaxies will merge to form a single giant elliptical galaxy.

The group was discovered by Carl Keenan Seyfert using photographic plates made at the Barnard Observatory of Vanderbilt University. When these results were first published in 1951, this group was the most compact group ever identified.

Coordinates: 15^h 59^m 11.9^s, +20° 45′ 31″

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