HD 79940

 
 
HD 79940 is a single star in the southern constellation of Vela. It has the Bayer designation of k Velorum; "HD 79940" is the identifier from the "Henry Draper Catalogue". This star has a yellow-white hue and is faintly visible to the naked eye as a point light source with an apparent visual magnitude of 4.63. It is located at a distance of approximately 158 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +6 km/s.
There has been some disagreement over the stellar classification of this star. In 1975, S. Maladora found a class of F5III, suggesting an evolved F-type star, matching an earlier (1957) classification by A. de Vaucouleurs. N. Houk assigned it a class of F3/5V in 1979, matching an F-type main-sequence star. It has a high rate of spin with a projected rotational velocity of . This may explain why it was incorrectly classified as a spectroscopic binary in 1972.
There is a faint magnitude 14.50 companion at an angular separation of along a position angle of 126° from the brighter star. This was discovered by T. J. J. See in 1897.