The Coma Star Cluster in Coma Berenices, designated Melotte 111 after its entry in the catalogue of deep sky objects by P. J. Melotte, is a small but nearby star cluster in our galaxy, containing about 40 brighter stars (magnitude 5 to 10) with a common proper motion. The Hipparcos satellite and infrared color-magnitude diagram fitting have been used to establish a distance to the cluster's center of ~86 pc. The distance established via the independent analyses agree, thereby making the cluster an important rung on the cosmic distance ladder. The open cluster is roughly twice as distant as the Hyades and covers an area of more than 7.5 degrees on the sky. The cluster is approximately 450 million years old. In the FOV of a good field glass most of its stars can be seen simultaneously. The brighter stars of the cluster make out a distinctive "V" shape as seen when Coma Berenices is rising.
It used to represent Leo's tail, but Ptolemy III, in around 240 BC, renamed it for the Egyptian queen Berenice's sacrifice of her hair in a legend.
Famous quotes containing the words coma, star and/or cluster:
“A coma that is a white, interesting country ...”
—John Ashbery (b. 1927)
“I have drunk ale from the Country of the Young
And weep because I know all things now:
I have been a hazel-tree, and they hung
The Pilot Star and the Crooked Plough
Among my leaves in times out of mind....”
—William Butler Yeats (1865–1939)
“the green hells of the sea
Where fallen skies and evil hues and eyeless creatures be;
On them the sea-valves cluster and the grey sea-forests curl,
Splashed with a splended sickness, the sickness of the pearl;”
—Gilbert Keith Chesterton (1874–1936)