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Xi1 Centauri information


For other star systems with this Bayer designation, see Xi Centauri.
ξ1 Centauri
Location of ξ1 Centauri (circled)

ξ1 Cen is the brightest star in the picture, at the right of the galaxy NGC 4945.
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Centaurus
Right ascension 13h 03m 33.30528s[1]
Declination −49° 31′ 38.1518″[1]
Apparent magnitude (V) +4.83[2]
Characteristics
Spectral type A0 V[3]
U−B color index +0.014[2]
B−V color index +0.030[2]
Astrometry
Radial velocity (Rv)0.00±3.70[4] km/s
Proper motion (μ) RA: −47.55[1] mas/yr
Dec.: −11.52[1] mas/yr
Parallax (π)14.79 ± 0.27 mas[1]
Distance221 ± 4 ly
(68 ± 1 pc)
Absolute magnitude (MV)+0.68[5]
Details[6]
Mass2.39 M☉
Radius2.7[7] R☉
Luminosity43.2[8] L☉
Surface gravity (log g)4.11±0.14 cgs
Temperature10,462±356 K
Rotational velocity (v sin i)185[9] km/s
Age125 Myr
Other designations
ξ1 Cen, CD−48° 7887, HD 113314, HIP 63724, HR 4933, SAO 223870.[10]
Database references
SIMBADdata

Xi1 Centauri, Latinized from ξ1 Centauri, is a solitary[11] star in the southern constellation of Centaurus. It is visible to the naked eye with an apparent visual magnitude of +4.83.[2] With an annual parallax shift of 14.79 mas,[1] it is located around 221 light years from the Sun. At that distance, the apparent visual magnitude of the star is diminished by an interstellar extinction factor of 0.10[12] due to intervening dust. Just 17 arc minutes to the east of Xi1 Centauri lies the galaxy NGC 4945.[13]

This is an A-type main sequence star with a stellar classification of A0 V.[3] It is about 125[6] million years old with a relatively high rate of spin, having a projected rotational velocity of 185 km/s.[9] The star has an estimated 2.4[6] times the mass of the Sun and about 2.7[7] times the Sun's radius. It is radiating 43[8] times the solar luminosity from its outer atmosphere at an effective temperature of 10,462 K.[6]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference GutierrezMoreno1968 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Bauwens2010 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference PasinettiFracassini2001 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference UesugiFukuda70 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference OMeara2016 was invoked but never defined (see the help page).

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Xi1 Centauri

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Xi1 Centauri, Latinized from ξ1 Centauri, is a solitary star in the southern constellation of Centaurus. It is visible to the naked eye with an apparent...

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