IC 4651

Open cluster IC 4651

Image of the open star cluster IC 4651, created with the MPG / ESO 2.2 m telescope
AladinLite
Constellation	altar
Position equinox : J2000.0
Right ascension	17 ^h 24 ^m 52.0 ^s
declination	-49 ° 56 ′ 36 ″
Appearance
classification	II3m
Physical data
distance	3000 ly
diameter	8 - 9 years
Age	1.2 (± 0.2) billion years
history
Discovered by	James Dunlop
Discovery time	July 28, 1826
Catalog names
IC 4651 • OCl 987 • Mel 169 • Cr 327 •

IC 4651 is an open star cluster of the type II3m in the constellation Altar in the southern sky . IC 4651 has a diameter of 10 ' and an apparent magnitude of +6.90 mag. It is <3000 light years away from the solar system and has a diameter of about 8 to 9 light years . The cluster is a little over 1 billion years old.

The object was discovered on July 28, 1826 by James Dunlop .

Individual evidence