D Centauri
12h14m 02.697s[1]
−45° 43′ 26.10″[1]
Characteristics
K3III[4] (K4IIIab + K2IIIb)[5]
U−B color index
+1.82/1.19[5]
B−V color index
A
Radial velocity (Rv)
+10.27±0.68[6] km/s
Proper motion (μ)
RA: −37.186[6] mas/yr
Dec.: 6.606[6] mas/yr
Parallax (π)
Absolute magnitude (MV)
−0.88[2]
B
Proper motion (μ)
RA: −33.604[7] mas/yr
Dec.: 5.434[7] mas/yr
Parallax (π)
Details
A
B
Luminosity
Database references
D Centauri is a double star in the southern constellationofCentaurus.[8] The system is faintly visible to the naked eye as a point of light with a combined apparent magnitude of +5.31;[2] the two components are of magnitude 5.78 and 6.98, respectively.[3] 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.[6]
The dual nature of this star was announced by C. Rumker in 1837. As of 2015, the pair had an angular separationof2.70″ along a position angle of 242°.[3] This orange-hued double has a combined stellar classification of K3III,[4] 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.[5]
Other
Other
