V376 Carinae
V376 Carinae is a binary star system in the southern constellation of Carina. It has the Bayer designation b1 Carinae; "V376 Carinae" is the variable star designation. The system is visible to the naked eye as a faint point of light with a combined apparent magnitude of +4.69. The distance to this system from the Sun is approximately 650 light years based on parallax. It is drifting further away with a radial velocity of +27 km/s.

The magnitude 4.87 primary, designated component A, is a B-type main-sequence star with a stellar classification of B2V. During a search for Beta Cephei variables in the southern sky, it was initially classed as a very short period variable. However, this variability was not confirmed by subsequent observations. Samus et al. (2017) now suspect it is a constant star that was assigned a variable designation in haste. It has an estimated age of 12.5 million years with 7.8 times the mass of the Sun. The star is radiating nearly three thousand times the Sun's luminosity from its photosphere at an effective temperature of 21,150 K.

The companion star, component B, was discovered by Scottish astronomer James Dunlop in 1836. It has a class of B9.5V with an apparent magnitude of +6.58. As of 2010, the secondary had an angular separation of from the primary along a position angle of 76°.
Q50053
binary star
Concept
Q8928
constellation
Concept
Q10470
Carina
CEL
Q105616
Bayer designation
Concept
Q593448
variable star designation
Concept
Q124313
apparent magnitude
Concept
Q525
Sun
CEL
Q531
light year
Concept
Q906561
parallax
Concept
Q240105
radial velocity
Concept
Q767432
B-type main-sequence star
Concept
Q25377588
stellar classification
Concept
Q764463
Beta Cephei variables
CEL
Q180892
mass of the Sun
Concept
Q843877
Sun's luminosity
Concept
Q6372
photosphere
Concept
Q854050
effective temperature
Concept
Q375158
James Dunlop
PER
Q1357788
angular separation
Concept
Q2105737
position angle
UNK
Q657686
V376 Carinae
CEL
Q657686
V376 Carinae
CEL
1836-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1836
DATE
2010-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2010
DATE
+376^^http://www.w3.org/2001/XMLSchema#decimal
376
NUMBER
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+376^^http://www.w3.org/2001/XMLSchema#decimal
376
NUMBER
++4.69^^http://www.w3.org/2001/XMLSchema#decimal
+4.69
NUMBER
++27^^http://www.w3.org/2001/XMLSchema#decimal
+27
NUMBER
+4.87^^http://www.w3.org/2001/XMLSchema#decimal
4.87
NUMBER
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
+2017^^http://www.w3.org/2001/XMLSchema#decimal
2017
NUMBER
+12.5^^http://www.w3.org/2001/XMLSchema#decimal
12.5
NUMBER
+7.8^^http://www.w3.org/2001/XMLSchema#decimal
7.8
NUMBER
+9.5^^http://www.w3.org/2001/XMLSchema#decimal
9.5
NUMBER
++6.58^^http://www.w3.org/2001/XMLSchema#decimal
+6.58
NUMBER
+76^^http://www.w3.org/2001/XMLSchema#decimal
76
NUMBER
constellation
type of variable star
instance of