HD 90264
HD 90264 is a binary star system in the southern constellation of Carina. It has the Bayer designation of "L Carinae", while "HD 90264" is the star's identifier in the "Henry Draper catalogue". This system has a blue-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.97. It is located at a distance of approximately 402 light years from the Sun based on parallax, and is drifting further away with a radial velocity of around +12 km/s. The system is a member of the Lower Centaurus Crux association of the Sco-Cen Complex.

This system was found to be a close double-lined spectroscopic binary in 1977, consisting of two B-type main-sequence stars. It has a near circular orbit with a period of 15.727 days and a semimajor axis of . They appear to be spin-orbit synchronized. Both stars appear to be deficient in helium. The primary is a helium variable star while the companion is a mercury-manganese star. The variability of both stars aligns favorably with the orbital period.
Q50053
binary star
Concept
Q8928
constellation
Concept
Q10470
Carina
CEL
Q105616
Bayer designation
Concept
Q111130
Henry Draper catalogue
MEDIA
Q124313
apparent visual magnitude
Concept
Q531
light year
Concept
Q525
Sun
CEL
Q906561
parallax
Concept
Q240105
radial velocity
Concept
Q45059
Sco-Cen Complex
CEL
Q50053
spectroscopic binary
Concept
Q767432
B-type main-sequence star
Concept
Q37640
period
Concept
Q21143897
semimajor axis
UNK
Q109144
spin-orbit synchronized
Concept
Q1392904
helium variable
Concept
Q1140275
mercury-manganese star
Concept
Q2715871
HD 90264
CEL
Q2715871
HD 90264
CEL
1977-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1977
DATE
+4.97^^http://www.w3.org/2001/XMLSchema#decimal
4.97
NUMBER
++12^^http://www.w3.org/2001/XMLSchema#decimal
+12
NUMBER
+15.727^^http://www.w3.org/2001/XMLSchema#decimal
15.727
NUMBER
constellation
type of variable star
instance of