Lambda Velorum

from Wikipedia, the free encyclopedia
Star
λ Velorum
AladinLite
Observation
dates equinoxJ2000.0 , epoch : J2000.0
Constellation Sails of the ship
Right ascension 09 h 07 m 59.76 s
declination -43 ° 25 ′ 57.3 ″
Apparent brightness 2.21 (2.14 to 2.30) mag
Typing
B − V color index (+1.65) 
U − B color index (+1.81) 
R − I index (+0.94) 
Spectral class K4 Ib-IIa
Variable star type SR 
Astrometry
Radial velocity (+17.6 ± 0.3) km / s
parallax 5.99 ± 0.11  mas
distance 545 ± 10  ly
167 ± 3  pc
Proper movement 
Rec. Share: (−24.01 ± 0.10)  mas / a
Dec. portion: (13.52 ± 0.09)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name λ Velorum
Cordoba Survey CD −42 ° 4990
Bright Star Catalog HR 3634 [1]
Henry Draper Catalog HD 78647 [2]
Hipparcos catalog HIP 44816 [3]
SAO catalog SAO 220878 [4]
Tycho catalog TYC 7689-2617-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
2MASS catalog 2MASS J09075977-4325571 [6]
Other names Suhail, FK5  345

λ Velorum ( Lambda Velorum , short λ Vel ) is a giant of the spectral class K4 Ib-II. It is a variable whose apparent visual brightness varies between approximately 2.1 and 2.3 mag. This makes it the third brightest star in the constellation Vela. Its parallax of around 6 milli-arcseconds results in a distance of around 170 parsecs. The star is also called Suhail (from Arabic سهيل الوزن, DMG Suhail al-Wazn ), but not to be confused with the star Gamma Velorum, also called Suhail .

Individual evidence

  1. a b c d e f g h lam Vel. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 29, 2018 .
  2. a b c lam Vel. In: VSX. AAVSO, accessed September 11, 2018 .