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Alpha Coma Berenices B (Companion Star) Facts

Alpha Coma Berenices B Facts

Alpha Coma Berenices B's Alternative Names

The Id of the star in the Yale Bright Star Catalogue is HR4969. The Id of the star in the Henry Draper catalogue is HD114379. The Gliese ID of the star is GL 501 B . The star was part of the original catalogue devised by German Astronomer Wilheim Gliese of stars located within 20 parsecs of Earth. Star Names

Alpha Coma Berenices B has alternative name(s) :- Alfa Com B.

BD number is the number that the star was filed under in the Durchmusterung or Bonner Durchmusterung, a star catalogue that was put together by the Bonn Observatory between 1859 to 1903. The star's BD Number is BD+18 2697B.

More details on objects' alternative names can be found at Star Names .

Location of Alpha Coma Berenices B

The location of the main sequence star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For Alpha Coma Berenices B, the location is 13h 09m 59.289 and +17° 31` 46.24 .

Proper Motion of Alpha Coma Berenices B

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving 137.80 miliarcseconds/year towards the north and -430.10 miliarcseconds/year east if we saw them in the horizon. . When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.

Physical Properties (Colour) of Alpha Coma Berenices B

Alpha Coma Berenices B has a spectral type of F6V C. This means the star is a blue to white main sequence star.

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Additional Alpha Coma Berenices B Facts and Figures

Visual Facts


Primary / Proper / Traditional NameAlpha Coma Berenices B
Alternative NamesAlfa Com B, HD 114379, HR 4969, BD+18 2697B, Gliese 501 B
Spectral TypeF6V C
Constellation's Main StarNo
Multiple Star SystemYes
Star Type main sequence Dwarf Star
ColourYellow - White
GalaxyMilky Way
ConstellationComa Berenices
Right Ascension (R.A.)13h 09m 59.289
Declination (Dec.)+17° 31` 46.24
Proper Motion Dec.137.80 milliarcseconds/year
Proper Motion RA.-430.10 milliarcseconds/year
Associated / Clustered StarsDiadem

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Sources and Links


Sourcehttp://simbad.u-strasbg.fr/simbad/sim-id?Ident=hd114379

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