Coma Berenices (Pronounciation:Co-ma Bare-en-ees, Abbrev:Com, Latin:Comae Berenices) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Coma Berenices takes up 386.475 sq. degrees of the night sky which equates to 0.94% of the night sky. Coma Berenices is the 42nd largest in terms of size in the night sky.
The constellation name means Berenices Hair .
There are 3 stars that make up the main constellation. The hipparcos satellite scanned and detailed 1076 stars. There are 38 stars that can be seen with the naked eye in the constellation on a very clear night sky.
Coma Berenices is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Coma Berenices is a northern hemispheric constellation which means it can't be seen easily or at all from the southern hemisphere.
The distance to Coma Berenices is not calculable because all the stars that make up the constellation are at various distances. The best answer for distance to Coma Berenices is to calculate the average distance of the stars.
There are 8 deep space objects that were identified by Charles Messier in this constellation. There are no non-Messier deep space objects in this constellation that are covered at present on this site.
The image at the top right of this page was generated using Night Vision, a free to use and download application by Brian Simspon.
The caveat of these stars are that they are catalogued on this site. If you know of a star that is nearer or further then do let me know in the comments and I'll add it to the site. The stars mentioned are from the Hipparcos catalogue or have been added because of their special status.
The nearest star to Earth is HIP 63721 which is roughly about 15.06 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 107146 which is about 89.56 Light Years.
The furthest star that is located in the constellation is HIP 65527 and it is 326163.3 light years away from the Sun. The furthest figure is derived from either the 1997 or 2007 Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong.
The brightest star in Coma Berenices is Beta Comae Berenices and is located about 357.28 light years from the Sun. The star has a apparent magnitude of 4.23 but an absolute magnitude of 4.43 when the star is viewed from a distance of 10 Parsecs or 32.6 Light Years. The star is only recognised as being Beta Comae Berenices rather than having Alpha status.
The dimmest star that can be seen in Coma Berenices with the naked eye is 39 Comae Berenices. The dim star has an apparent magnitude of 6. The dimmest star that a person is able to see with their naked eye is 6.0 magnitude based on the table in the reference. Ref: University of Michigan.
There are 13 Meteor Showers that occur during the year within this constellation based on information gathered from Adam Mickiewicz University (Poland). The list below are major ones and which I have a date period for.
|Name||Activity||Peak Activity||Closest Star|
|May Alpha Comae Berenicids||3rd May|
|Coma Berenicids||Dec 8-Jan 23||Dec. 18-Jan. 6|
The following list contains the stars that make up the constellation. For a larger list of stars in the entire constellation area, please visit the For a list of named stars, that is stars that don't start HD or HIP, please visit Coma Berenices Star List page.
|Name||Bayer||Distance (Lt.Yr.)||Right Ascension||Declination||Spectral Type||Colour|
|Diadem||Alpha Comae Berenices||58.14||13h 09m 59.55||+17d 31` 44.8||F5V||Yellow/White|
|Beta Comae Berenices||Beta Comae Berenices||29.78||13h 11m 52.92||+27d 52` 33.7||G0V||Yellow|
|Gamma Comae Berenices||Gamma Comae Berenices||167.26||12h 26m 56.33||+28d 16` 07.0||K2IIICN+...||Orange|
|Is a Zodiac Sign||No|
|Brightest Star||Beta Comae Berenices|
|Area||386.475 sq. deg.|
|Percentage of Night Sky||0.94%|
|Site Exoplanet Count||11|
|Meteor Shower Count||13|
|Nearest Star||HIP 63721|
|Nearest Star with Exoplanet(s)||HD 107146|
|Brightest Star||Beta Comae Berenices|
|Dimmest Star||39 Comae Berenices|
|Furthest Star||HIP 65527|
|Bright Star Count||38|
|Hipparcos Star Count||1076|
|Main Star Count||3|
|Messier Deep Space Object Count||8|
|Bordering / Neighbouring / Surrounding Constellations||Bootes|
*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.
|BlackEye Galaxy (M64, NGC4826)||Spiral Galaxy||22,000-26,000 kly||+21:41||12h 56m 7|
|Dragonfly 44||Galaxy||330 Million||+26d 48` 35||13h 00m 58|
|IC 4107||Low Surface Brightness Galaxy||+21 59 50||13 02 41m 8|
|Messier 100 (NGC4321)||Spiral Galaxy||55000000||+15:49||12h 22m 9|
|Messier 53 (NGC5024)||Globular Cluster||58000||+18:10||13h 12m 9|
|Messier 85 (NGC4382)||Spiral Galaxy||56,000-64,000 kly||+18:11||12h 25m 4|
|Messier 88 (NGC4501)||Spiral Galaxy||39,000-56,000 kly||+14:25||12h 32m 0|
|Messier 91 (NGC4548)||Spiral Galaxy||47,000-79,000 kly||+14:30||12h 35m 4|
|Messier 98 (NGC4192)||Spiral Galaxy||44400000||+14:54||12h 13m 8|
|Messier 99 (NGC4254)||Spiral Galaxy||44,700-55,700 kly||+14:25||12h 18m 8|
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