N Centauri
N Centauri is a binary star in the southern constellation of Centaurus. The brighter star is dimly visible to the naked eye with an apparent visual magnitude of 5.26, and it is approximately 304 light years away based on parallax. It has an absolute magnitude of +0.76 and is drifting further away from the Sun with a radial velocity of +27 km/s. It is a candidate member of the Sco OB2 moving group.

The double nature of this system was discovered by German astronomer Carl Rümker in 1835. As of 2016, the companion lay at an angular separation of along a position angle of 289° from the primary. They form a co-moving pair with a projected separation of . The more luminous member is a B-type main-sequence star with a stellar classification of B9V. Its fainter companion is an F-type main-sequence star with a class of F0Vn, where the 'n' suffix indicates that the metal absorption lines in its spectrum are unusual broad ("nebulous") and indicative of rapid rotation. Based upon discrepancies in the proper motion measurements, there are hints of a third member of this system.
Q50053
binary star
Concept
Q8928
constellation
Concept
Q8844
Centaurus
CEL
Q124313
apparent visual magnitude
Concept
Q531
light year
Concept
Q906561
parallax
Concept
Q159653
absolute magnitude
Concept
Q525
Sun
CEL
Q240105
radial velocity
Concept
Q45059
Sco OB2
CEL
Q70272
Carl Rümker
PER
Q1357788
angular separation
Concept
Q2105737
position angle
UNK
Q767432
B-type main-sequence star
Concept
Q25377588
stellar classification
Concept
Q1353952
F-type main-sequence star
Concept
Q212111
absorption line
Concept
Q84629182
N Centauri
CEL
1835-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1835
DATE
2016-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2016
DATE
+5.26^^http://www.w3.org/2001/XMLSchema#decimal
5.26
NUMBER
++0.76^^http://www.w3.org/2001/XMLSchema#decimal
+0.76
NUMBER
++27^^http://www.w3.org/2001/XMLSchema#decimal
+27
NUMBER
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
+9^^http://www.w3.org/2001/XMLSchema#decimal
9
NUMBER
0^^http://www.w3.org/2001/XMLSchema#decimal
0
NUMBER
instance of
constellation
instance of