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Sigma Orionis C (Companion Star) Facts

Sigma Orionis C Facts

Sigma Orionis C's Alternative Names

(Sigma Orionis C) is the Bayer Classification for the star. The Bayer Classification was created by Johann Bayer in the early nineteenth century. The brightest star in the constellation is normally given the Alpha designation although there are exceptions such as Pollux which is Beta Geminorum.

Sigma Orionis C has alternative name(s) :- Sigma Ori C.

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-02 1326C.

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

Location of Sigma Orionis C

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 Sigma Orionis C, the location is 05h 38m 44.117 and -02° 36` 06.29 .

Proper Motion of Sigma Orionis C

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 3.38 milliarcseconds/year towards the north and 5.03 milliarcseconds/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 Sigma Orionis C

Sigma Orionis C Colour and Temperature

Sigma Orionis C has a spectral type of A2Vn C. This means the star is a blue - white main sequence star.

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Additional Sigma Orionis C Facts and Figures

Visual Facts

Primary / Proper / Traditional NameSigma Orionis C
Alternative NamesSigma Ori C, BD-02 1326C
Spectral TypeA2Vn C
Constellation's Main StarNo
Multiple Star SystemYes
Star Type Main Sequence Dwarf Star
GalaxyMilky Way
Right Ascension (R.A.)05h 38m 44.117
Declination (Dec.)-02° 36` 06.29
Proper Motion Dec.3.38 milliarcseconds/year
Proper Motion RA.5.03 milliarcseconds/year
Associated / Clustered StarsSigma Orionis
Sigma Orionis D
Sigma Orionis E

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Related Stars

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