HD 81101
HD 81101 is a single star in the southern constellation of Carina. It has the Bayer designation "k Carinae", while "HD 81101" is the star's designation in the "Henry Draper catalogue". The star has a yellow hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.79. It is located at a distance of approximately 225 light years from the Sun based on parallax. This object is drifting further away with a radial velocity of +51 km/s, having come to within of the Sun some 1.4 million years ago.

This is an aging giant star with a stellar classification of G6III, having exhausted the supply of hydrogen at its core then cooled and expanded away from the main sequence. It is two billion years old with 1.95 times the mass of the Sun and has expanded to 11 times the Sun's radius. The star is radiating 65 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,908 K. Being a member of the old disk population, the metallicity of the star's stellar atmosphere is much lower than solar.
Q523
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
Q5875
giant star
Concept
Q25377588
stellar classification
Concept
Q60790215
core
Concept
Q3450
main sequence
Concept
Q180892
mass of the Sun
Concept
Q48440
Sun's radius
Concept
Q843877
luminosity of the Sun
Concept
Q6372
photosphere
Concept
Q854050
effective temperature
Concept
Q217030
metallicity
Concept
Q6311
stellar atmosphere
Concept
Q525
solar
CEL
Q2609003
HD 81101
CEL
Q2609003
HD 81101
CEL
+4.79^^http://www.w3.org/2001/XMLSchema#decimal
4.79
NUMBER
++51^^http://www.w3.org/2001/XMLSchema#decimal
+51
NUMBER
+1.4^^http://www.w3.org/2001/XMLSchema#decimal
1.4
NUMBER
+6^^http://www.w3.org/2001/XMLSchema#decimal
6
NUMBER
+1.95^^http://www.w3.org/2001/XMLSchema#decimal
1.95
NUMBER
+11^^http://www.w3.org/2001/XMLSchema#decimal
11
NUMBER
+65^^http://www.w3.org/2001/XMLSchema#decimal
65
NUMBER
instance of
constellation
instance of
part of