D Centauri
D Centauri is a double star in the southern constellation of Centaurus. The system is faintly visible to the naked eye as a point of light with a combined apparent magnitude of +5.31; the two components are of magnitude 5.78 and 6.98, respectively. It is located at a distance of approximately 610 light years from the Sun based on parallax, and is drifting further away with a radial velocity of ~10 km/s.

The dual nature of this star was announced by C. Rumker in 1837. As of 2015, the pair had an angular separation of along a position angle of 242°. This orange-hued double has a combined stellar classification of K3III, matching an aging giant star that has exhausted the supply of hydrogen at its core. In 1984, C. J. Corbally found a class of K4IIIab for the primary and K2IIIb for the fainter secondary.
Q13890
double star
Concept
Q8928
constellation
Concept
Q8844
Centaurus
CEL
Q124313
apparent magnitude
Concept
Q531
light year
Concept
Q525
Sun
CEL
Q906561
parallax
Concept
Q240105
radial velocity
Concept
Q70272
C. Rumker
PER
Q1357788
angular separation
Concept
Q2105737
position angle
UNK
Q25377588
stellar classification
Concept
Q5875
giant star
Concept
Q60790215
core
Concept
None
C. J. Corbally
UNK
Q1091491
D Centauri
CEL
1837-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1837
DATE
2015-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2015
DATE
1984-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1984
DATE
++5.31^^http://www.w3.org/2001/XMLSchema#decimal
+5.31
NUMBER
+5.78^^http://www.w3.org/2001/XMLSchema#decimal
5.78
NUMBER
+6.98^^http://www.w3.org/2001/XMLSchema#decimal
6.98
NUMBER
+10^^http://www.w3.org/2001/XMLSchema#decimal
10
NUMBER
+3^^http://www.w3.org/2001/XMLSchema#decimal
3
NUMBER
+4^^http://www.w3.org/2001/XMLSchema#decimal
4
NUMBER
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
constellation
instance of