Girtab

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Double star
girtab
AladinLite
Observation
dates equinoxJ2000.0 , epoch : J2000.0
Constellation Scorpio
Right ascension 17 h 42 m 29.3 s
declination −39 ° 01 ′ 48 ″
Apparent brightness 2.39 likes
Typing
B − V color index (−0.18) 
U − B color index (−0.83) 
Spectral class B1.5 III
Variable star type BCEP 
Astrometry
Radial velocity (−14.0 ± 2.8) km / s
parallax (6.75 ± 0.17)  mas
distance (480)  ly
(150)  pc
Proper movement 
Rec. Share: (−6.05 ± 0.21)  mas / a
Dec. portion: (−25.54 ± 0.13)  mas / a
Physical Properties
Other names
and catalog entries
Cordoba Survey CD −38 ° 12137
Bright Star Catalog HR 6580 [1]
Henry Draper Catalog HD 160578 [2]
Hipparcos catalog HIP 86670 [3]
SAO catalog SAO 209163 [4]
Tycho catalog TYC 7885-2065-1 [5]
2MASS catalog 2MASS J17422928-3901479 [6]
Other names FK5 660

Girtab ( Sumerian for Scorpio ) is the name of the star Kappa Scorpii . Girtab with spectral class B1.5III has an apparent brightness of +2.41 mag, making it one of the 100 brightest stars in the night sky . Its distance to earth is approx. 480 ly.

Web links

Individual evidence

  1. a b c d e f g kap Sco. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on October 13, 2018 .
  2. a b chap Sco. In: VSX. AAVSO, accessed October 13, 2018 .