Universe Guide

17 Draconis B (Companion Star) Facts

17 Draconis B Facts

  • 17 Draconis B is a main sequence star that can be located in the constellation of Draco. The description is based on the spectral class.
  • 17 Draconis B is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (A1Vnn C) of the star, the star's colour is blue - white .

17 Draconis B's Alternative Names

The Id of the star in the Henry Draper catalogue is HD150118.

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

Location of 17 Draconis 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 17 Draconis B, the location is 16h 36m 14.0608620128 and +52° 55` 27.086523950 .

Radial Velocity and Proper Motion of 17 Draconis 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 31.43 milliarcseconds/year towards the north and -16.07 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 -18.00000 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 17 Draconis B

17 Draconis B Colour and Temperature

Based on the star's spectral type of A1Vnn C , 17 Draconis 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 17 Draconis B Facts and Figures

Visual Facts

Primary / Proper / Traditional Name17 Draconis B
Alternative NamesHD 150118
Spectral TypeA1Vnn C
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type Main Sequence Dwarf Star
GalaxyMilky Way
Right Ascension (R.A.)16h 36m 14.0608620128
Declination (Dec.)+52° 55` 27.086523950
Proper Motion Dec.31.43200 milliarcseconds/year
Proper Motion RA.-16.07100 milliarcseconds/year
Radial Velocity-18.00000 km/s
Associated / Clustered Stars17 Draconis
17 Draconis 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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