Kappa Velorum

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Double star
κ Velorum
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Sails of the ship
Right ascension 09 h 22 m 6.82 s
declination −55 ° 00 ′ 38.4 ″
Apparent brightness 2.47 mag
Typing
B − V color index −0.18 
U − B color index −0.75 
R − I index −0.19 
Spectral class B2 IV
Astrometry
Radial velocity (21.9 ± 3.9) km / s
parallax (5.70 ± 0.30)  mas
distance (570 ± 30)  ly
(175 ± 9)  pc  
Visual absolute brightness M vis −4 likes
Proper movement 
Rec. Share: (−11.40 ± 0.32)  mas / a
Dec. portion: (+11.52 ± 0.27)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name κ Velorum
Cordoba Survey CD −54 ° 2757
Bright Star Catalog HR 3734 [1]
Henry Draper Catalog HD 81188 [2]
Hipparcos catalog HIP 45941 [3]
SAO catalog SAO 236891 [4]
Tycho catalog TYC 8588-4200-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
2MASS catalog 2MASS J09220681-5500386 [6]
Other names FK5  353 • CPD −54 ° 2219
annotation
  1. ↑ Estimated from apparent brightness and distance.

κ Velorum ( Kappa Velorum , κ Vel for short ) is a spectroscopic binary star with an apparent visual brightness of 2.5 mag and an orbital period of about 117 days. The star system lies in the constellation Vela and is about 570  light years away. κ Velorum has the historical proper name Markab (sometimes also written Markeb to distinguish it from other stars of the same name ).

The star is only a few degrees from the southern celestial pole of Mars, so it could be considered the southern polar star of Mars.

See also

Web links

literature

Individual evidence

  1. ↑ a b c Hipparcos catalog (ESA 1997)
  2. ↑ a b c Bright Star Catalog
  3. ↑ Pulkovo radial velocities for 35493 HIP stars
  4. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)