Universe Guide

KSI Scorpii A

KSI Scorpii A Facts

  • KSI Scorpii A is a main sequence star that can be located in the constellation of Scorpius. The description is based on the spectral class.
  • KSI Scorpii A is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (F4(V) D) of the star, the star's colour is yellow to white .

KSI Scorpii A's Alternative Names

The Id of the star in the Yale Bright Star Catalogue is HR5978. The Id of the star in the Henry Draper catalogue is HD144070. The Gliese ID of the star is GJ 9540 A. The star was added to the Gliese catalogue in 1970 by Richard van der Riet Woolley hence the GJ prefix rather than GL prefix.Star Names.

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-10 4237A.

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

Location of KSI Scorpii A

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 KSI Scorpii A, the location is 16h 04m 22.115 and -11° 22` 23.42 .

Proper Motion of KSI Scorpii A

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 -34.50 milliarcseconds/year towards the north and -71.50 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 of KSI Scorpii A

KSI Scorpii A Temperature and Colour

Based on the star's spectral type of F4(V) D , KSI Scorpii A's colour and type is yellow to white main sequence star. Based on the star's spectral, the stars temperature is between 6,000.00 and 7,500.00 degrees kelvin.

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Additional KSI Scorpii A Facts and Figures

Visual Facts

Primary / Proper / Traditional NameKSI Scorpii A
Alternative NamesHD 144070, HR 5978, BD-10 4237A, Gliese 9540 A
Spectral TypeF4(V) D
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type Main Sequence Dwarf Star
ColourYellow - White
GalaxyMilky Way
Right Ascension (R.A.)16h 04m 22.115
Declination (Dec.)-11° 22` 23.42
Proper Motion Dec.-34.50000 milliarcseconds/year
Proper Motion RA.-71.50000 milliarcseconds/year

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Estimated Calculated Facts

Calculated Temperature Range6,000.00 - 7,500.00

Sources and Links


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