Nu2 Columbae

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ν2 Columbae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Columba
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.31[2]
Characteristics
Spectral type F5 V[3]
U−B Template:Engvar +0.10[2]
B−V Template:Engvar +0.46[2]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[4] km/s
Proper motion (μ) RA: −37.66[1] mas/yr
Dec.: +42.42[1] mas/yr
Parallax (π)24.51±0.29 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+2.21[5]
Details
Mass1.65[4] Template:Solar mass
Radius1.6[6] Template:Solar radius
Luminosity10[7] Template:Solar luminosity
Surface gravity (log g)3.91[8] cgs
TemperatureScript error: No such module "val".[4] K
Metallicity [Fe/H]Script error: No such module "val".[9] dex
Rotational velocity (v sin i)27.2[8] km/s
Age1.8[4] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
ν2 Col, CD−28°2321, HD 37495, HIP 26460, HR 1935, SAO 170613.[10]
Database references
SIMBADdata

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Nu2 Columbae is a solitary star[11] in the southern constellation of Columba. It can be seen with the naked eye, having an apparent visual magnitude of 5.31.[2] With an annual parallax shift of Script error: No such module "val".,[1] it is estimated to lie about Script error: No such module "val". from the Sun.

This star has a stellar classification of F5 V,[3] indicating that it is an F-type main sequence star that is generating energy through the thermonuclear fusion of hydrogen into helium in its core region. It has about 1.65 times the mass of the Sun[4] and 1.6 times the Sun's radius.[6] X-ray emission has been detected from this star, with an estimated luminosity of Script error: No such module "val"..[5] It is about 1.8 billion years old[4] and is spinning with a projected rotational velocity of Script error: No such module "val"..[8] The star is radiating about 10 times the solar luminosity from its outer atmosphere[7] at an effective temperature of Script error: No such module "val"..[4]

References

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  1. ↑ a b c d e f Script error: No such module "citation/CS1".
  2. ↑ a b c d Script error: No such module "citation/CS1".
  3. ↑ a b Script error: No such module "citation/CS1".
  4. ↑ a b c d e f g Script error: No such module "citation/CS1".
  5. ↑ a b Script error: No such module "citation/CS1".
  6. ↑ a b Script error: No such module "citation/CS1".
  7. ↑ a b Script error: No such module "citation/CS1".
  8. ↑ a b c Script error: No such module "citation/CS1".Script error: No such module "Unsubst".
  9. ↑ Script error: No such module "citation/CS1".
  10. ↑ Script error: No such module "citation/CS1".
  11. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Columba

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