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1 Arietis B (Companion Star) Facts

1 Arietis B Facts

  • 1 Arietis B is a main sequence star that can be located in the constellation of Aries. The description is based on the spectral class.
  • 1 Arietis B is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (A31V C) of the star, the star's colour is blue - white .

1 Arietis B's Alternative Names

The Id of the star in the Henry Draper catalogue is HD11155.

Flamsteed designations are named after the creator, Sir John Flamsteed. Sir John named the stars in the constellation with a number and its latin name, this star's Flamsteed designation is 1 Arietis B. The Flamsteed name can be shortened to 1 Ari B.

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

Location of 1 Arietis 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 1 Arietis B, the location is 01h 50m 08.625 and +22° 16` 28.38 .

Radial Velocity and Proper Motion of 1 Arietis B

Proper Motion

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 -15.00 milliarcseconds/year towards the north and -14.30 milliarcseconds/year east if we saw them in the horizon.

Radial Velocity

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is 1.00000 km/s . 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 of 1 Arietis B

1 Arietis B Temperature and Colour

Based on the star's spectral type of A31V C , 1 Arietis B's colour and type is blue - white main sequence star. Based on the star's spectral, the stars temperature is between 7,500.00 and 10,000.00 degrees kelvin.

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Additional 1 Arietis B Facts and Figures

Visual Facts


Primary / Proper / Traditional Name1 Arietis B
Alternative Names1 Ari B, HD 11155, 1 Ari B
Spectral TypeA31V C
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type Main Sequence Dwarf Star
ColourBlue
GalaxyMilky Way
ConstellationAries
Right Ascension (R.A.)01h 50m 08.625
Declination (Dec.)+22° 16` 28.38
Proper Motion Dec.-15.00000 milliarcseconds/year
Proper Motion RA.-14.30000 milliarcseconds/year
Radial Velocity1.00000 km/s
Associated / Clustered Stars1 Arietis
1 Arietis A

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Calculated Facts


Calculated Temperature Range7,500.00 - 10,000.00

Related Stars


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