HD 91942
HD 91942 is a single variable star in the constellation Carina. It has the Bayer designation "r Carinae", while "HD 91942" is the identifier from the "Henry Draper catalogue". This orange-hued object is visible to the naked eye with an apparent visual magnitude of 4.45. Based on parallax measurements, it is located at a distance of approximately 1,180 light years from the Sun. The star has an absolute magnitude of −3.77, and is drifting further away with a radial velocity of +9.9 km/s.

This object is a massive, aging bright giant with a stellar classification of K3II-IIb. It is a suspected variable star that fluctuates in magnitude by an amplitude of 0.05 in the B-band of the UBV photometric system. With the supply of hydrogen exhausted at its core, it has evolved of the main sequence and cooled and expanded to 156 times the Sun's radius. It is an estimated 36 million years old with eight times the mass of the Sun. It is radiating around 5,500 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 3,983 K.
Q6243
variable star
Concept
Q8928
constellation
Concept
Q10470
Carina
CEL
Q105616
Bayer designation
Concept
Q111130
Henry Draper catalogue
MEDIA
Q124313
apparent visual magnitude
Concept
Q906561
parallax
Concept
Q531
light year
Concept
Q525
Sun
CEL
Q159653
absolute magnitude
Concept
Q240105
radial velocity
Concept
Q5881
bright giant
Concept
Q25377588
stellar classification
Concept
Q6243
variable star
Concept
Q159190
amplitude
Concept
Q129833
UBV photometric system
Concept
Q60790215
core
Concept
Q6472
evolved
Concept
Q3450
main sequence
Concept
Q48440
Sun's radius
Concept
Q180892
mass of the Sun
Concept
Q843877
luminosity of the Sun
Concept
Q6372
photosphere
Concept
Q854050
effective temperature
Concept
Q2608759
HD 91942
CEL
Q2608759
HD 91942
CEL
+4.45^^http://www.w3.org/2001/XMLSchema#decimal
4.45
NUMBER
+3.77^^http://www.w3.org/2001/XMLSchema#decimal
3.77
NUMBER
++9.9^^http://www.w3.org/2001/XMLSchema#decimal
+9.9
NUMBER
+3^^http://www.w3.org/2001/XMLSchema#decimal
3
NUMBER
+0.05^^http://www.w3.org/2001/XMLSchema#decimal
0.05
NUMBER
+36^^http://www.w3.org/2001/XMLSchema#decimal
36
NUMBER
constellation
instance of