V343 Carinae
V343 Carinae is a blue-white star or star system in the southern constellation of Carina. It has the Bayer designation "d Carinae", while "V343 Carinae" is a variable star designation. The star is visible to the naked eye with an apparent visual magnitude of 4.31. The distance to this object is approximately 1,440 light years based on parallax. It is drifting further away with a radial velocity of +13 km/s.

This star was originally thought to be a Beta Cephei variable and a suspected eclipsing binary with an orbital period of 133.92 days. It is now considered as probably constant. Measurements indicate that at most it is a microvariable star with an amplitude of 0.0041 in visual magnitude and a period of 0.42029 cycles per day. Eggleton and Tokovinin (2008) catalogued this as a single star, albeit with some uncertainty. However, Chini et al. (2012) listed it as a single-lined spectroscopic binary system.

The visible component of V343 Carinae has a stellar classification of B1.5III, matching a massive blue giant. It has 12.5 times the mass of the Sun and is an estimated 16 million years old. The star is radiating 6,323 times the Sun's luminosity from its photosphere at an effective temperature of 27,600 K. It has a visual magnitude 13.3 companion at an angular separation of along a position angle of 339°, as of 2010.
Q523
star
Concept
Q8928
constellation
Concept
Q10470
Carina
CEL
Q105616
Bayer designation
Concept
Q593448
variable star designation
Concept
Q124313
apparent visual magnitude
Concept
Q531
light year
Concept
Q906561
parallax
Concept
Q240105
radial velocity
Concept
Q764463
Beta Cephei variable
CEL
Q50053
eclipsing binary
Concept
Q37640
orbital period
Concept
Q159190
amplitude
Concept
Q50053
spectroscopic binary
Concept
Q25377588
stellar classification
Concept
Q5855
blue giant
Concept
Q180892
mass of the Sun
Concept
Q843877
Sun's luminosity
Concept
Q6372
photosphere
Concept
Q854050
effective temperature
Concept
Q1357788
angular separation
Concept
Q2105737
position angle
UNK
Q2403934
V343 Carinae
CEL
Q2403934
V343 Carinae
CEL
Q2403934
V343 Carinae
CEL
2010-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2010
DATE
+343^^http://www.w3.org/2001/XMLSchema#decimal
343
NUMBER
+343^^http://www.w3.org/2001/XMLSchema#decimal
343
NUMBER
+4.31^^http://www.w3.org/2001/XMLSchema#decimal
4.31
NUMBER
++13^^http://www.w3.org/2001/XMLSchema#decimal
+13
NUMBER
+0.004^^http://www.w3.org/2001/XMLSchema#decimal
0.004
NUMBER
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+0.420^^http://www.w3.org/2001/XMLSchema#decimal
0.420
NUMBER
+29^^http://www.w3.org/2001/XMLSchema#decimal
29
NUMBER
+2008^^http://www.w3.org/2001/XMLSchema#decimal
2008
NUMBER
+2012^^http://www.w3.org/2001/XMLSchema#decimal
2012
NUMBER
+343^^http://www.w3.org/2001/XMLSchema#decimal
343
NUMBER
+1.5^^http://www.w3.org/2001/XMLSchema#decimal
1.5
NUMBER
+12.5^^http://www.w3.org/2001/XMLSchema#decimal
12.5
NUMBER
+16^^http://www.w3.org/2001/XMLSchema#decimal
16
NUMBER
+13.3^^http://www.w3.org/2001/XMLSchema#decimal
13.3
NUMBER
instance of
constellation
type of variable star
instance of