NGC 4567 and NGC 4568

NGC 4567 and NGC 4568
The Siamese Twins with NGC 4567 (top) and NGC 4568 (bottom)
Observation data (J2000.0 epoch)
Constellation	Virgo
Right ascension	12h 36m 34.3s
Declination	+11° 14′ 17″
Distance	59.4 Mly (18.2 Mpc)[1]
Type	SA(rs)bc / SA(rs)bc
Apparent dimensions (V)	4.6' × 2.1'
Apparent magnitude (V)	+10.9
Notable features	colliding galaxies
Other designations
NGC 4567/8, UGC 7776
See also: Galaxy, List of galaxies

NGC 4567 and NGC 4568 (nicknamed the Siamese Twins or the Butterfly Galaxies) are a set of spiral galaxies about 60 million light-years away^[1] in the constellation Virgo. They were both discovered by Friedrich Wilhelm Herschel in 1784. They are part of the Virgo cluster of galaxies. Only one supernova (SN 2004cc) was observed in the Siamese Twins.

These galaxies may be in the process of colliding and merging with each other. They were named "Siamese Twins" because they look like they're connected.

See also

• Antennae Galaxies
• Eyes Galaxies

References

1. ^ ^{a b} "Distance Results for NGC 4568". NASA/IPAC Extragalactic Database. http://nedwww.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+4568. Retrieved 2010-05-01. 

External links

• Spiral Galaxies NGC 4568 and NGC 4567
• The Siamese Twins