N Centauri

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N Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
A
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.26[2]
B
Right ascension Template:RA[3]
Declination Template:DEC[3]
Apparent magnitude (V) 7.49[2]
Characteristics
Spectral type B9V + F0Vn[4][5]
B−V Template:Engvar Script error: No such module "val".[2]
Astrometry
A
Radial velocity (Rv)Script error: No such module "val".[2] km/s
Proper motion (μ) RA: −38.997[1] mas/yr
Dec.: −26.863[1] mas/yr
Parallax (π)10.7449±0.0882 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+0.76[2]
Details
A
Mass3.04[6] Template:Solar mass
Radius2.458[6] Template:Solar radius
Luminosity70.18[2] Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val".[7] cgs
TemperatureScript error: No such module "val".[7] K
Rotational velocity (v sin i)205[7] km/s
Age66[7] Myr
B
MassScript error: No such module "val".[8] Template:Solar mass
RadiusScript error: No such module "val".[8] Template:Solar radius
Luminosity6.43[9] Template:Solar luminosity
Surface gravity (log g)4.29[10] cgs
Temperature7,354[9] K
Metallicity [Fe/H]Script error: No such module "val".[8] dex
AgeScript error: No such module "val".[8] Gyr
Other designations
Template:Odlist[11]
A: Template:Odlist[11]
B: Template:Odlist[12]
Database references
SIMBADA
B

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N Centauri is a binary star[13] 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.[14]

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 Script error: No such module "val". along a position angle of 289° from the primary.[15] They form a co-moving pair with a projected separation of Script error: No such module "val"..[16] The more luminous member is a B-type main-sequence star with a stellar classification of B9V.[13] 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.[4][5] Based upon discrepancies in the proper motion measurements, there are hints of a third member of this system.[13]

References

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  1. ↑ a b c d e Template:Cite Gaia EDR3
  2. ↑ a b c d e f Script error: No such module "citation/CS1".
  3. ↑ a b Template:Cite Gaia EDR3
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  5. ↑ a b Script error: No such module "citation/CS1".
  6. ↑ a b Script error: No such module "citation/CS1".
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  8. ↑ a b c d Script error: No such module "citation/CS1".
  9. ↑ a b Template:Cite DR2
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  11. ↑ a b Template:Cite simbad
  12. ↑ Template:Cite simbad
  13. ↑ a b c Script error: No such module "citation/CS1".
  14. ↑ Script error: No such module "citation/CS1".
  15. ↑ Script error: No such module "citation/CS1".
  16. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Centaurus

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