Coma Berenices
From Wikipedia, the free encyclopedia.
| Coma Berenices | |
| Abbreviation | Com |
| Genitive | Comae Berenices |
| Meaning in English | Berenice's Hair |
| Right ascension | 12.76 h |
| Declination | 21.83° |
| Visible to latitude | Between 90° and -16° |
| On meridian | 9 p.m., May 15 |
| Area - Total | Ranked 42nd 386 sq. deg. |
| Number of stars with apparent magnitude < 3 | 0 |
| Brightest star - Apparent magnitude | Diadem 4.3 |
| Meteor showers |
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| Bordering constellations | |
| Table of contents |
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2 Notable deep sky objects 3 History and Mythology 4 Galaxies in Coma Berenices |
Notable features
The brightest star in Coma Berenices (α Comae Berenices) is named Diadem; it represents the gem in Berenice's crown.
β Comae Berenices is a little brighter than our Sun, which gives us an idea of how faint the Sun would appear seen from only 27 light years away.
Notable deep sky objects
Most of Coma Berenices' stars constitute an open cluster which is not listed in most catalogues because it is spread over a huge region, more than 5 degrees across, near γ Comae Berenices. This cluster is sometimes called Melotte 111.
History and Mythology
This constellation, originally an asterism, is associated with a charming legend. It is one of the few constellations (with Scutum) to owe its name to a historical figure, in this case Queen Berenice II of Egypt, wife of Ptolemy III Euergetes (fl. 246 BC - 221 BC), the king under whom Alexandria became an important cultural center.
Circa 243 BC, the king undertook a dangerous expedition against the Assyrians, who had murdered his sister. Berenice swore to the goddess Aphrodite to sacrifice her famous long hair, of which she was extremely proud, if her husband returned safely. He did, and she had her hair cut and placed it in the goddess' temple.
By the next morning the hair had disappeared. To appease the furious king and queen (and save the lives of the temple priests), the court astronomer, Conon, announced that the offering had so pleased the goddess that she had placed it in the sky. He indicated a cluster of stars that at the time were identified as Leo's tail, but which have since been called Berenice's Hair.
Galaxies in Coma Berenices