HD 73389
HD 73389 is a binary star system in the constellation Carina. It has the Bayer designation e2 Carinae; "HD 73389" is the identifier from the "Henry Draper Catalogue". This system is visible to the naked eye as a point of light with a combined apparent visual magnitude of +4.84. Based on parallax measurements, it is located at a distance of approximately 225 light years from the Sun. The system is drifting further away with a radial velocity of +25.6 km/s.

The visual magnitude 5.08 primary, component A, is an aging K-type giant star with a stellar classification of K0III. With the supply of hydrogen at its core exhausted, it has cooled and expanded to 11 times the Sun's radius. It is radiating 64 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,903 K. The secondary companion, component B, has a visual magnitude of 8.02 and is located at an angular separation of along a position angle of 207° from the primary, as of 2015.
Q50053
binary 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
Q240105
radial velocity
Concept
Q25377588
K-type
Concept
Q5875
giant star
Concept
Q25377588
stellar classification
Concept
Q60790215
core
Concept
Q48440
Sun's radius
Concept
Q843877
luminosity of the Sun
Concept
Q6372
photosphere
Concept
Q854050
effective temperature
Concept
Q124313
visual magnitude
Concept
Q1357788
angular separation
Concept
Q2105737
position angle
UNK
Q2609779
HD 73389
CEL
Q2609779
HD 73389
CEL
2015-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2015
DATE
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
++4.84^^http://www.w3.org/2001/XMLSchema#decimal
+4.84
NUMBER
++25.6^^http://www.w3.org/2001/XMLSchema#decimal
+25.6
NUMBER
+5.08^^http://www.w3.org/2001/XMLSchema#decimal
5.08
NUMBER
0^^http://www.w3.org/2001/XMLSchema#decimal
0
NUMBER
+11^^http://www.w3.org/2001/XMLSchema#decimal
11
NUMBER
+64^^http://www.w3.org/2001/XMLSchema#decimal
64
NUMBER
+8.02^^http://www.w3.org/2001/XMLSchema#decimal
8.02
NUMBER
constellation
instance of