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Alpha Antliae is the brightest star in the constellation of Antlia, though it has not been given a proper name. It is approximately 370 light years away from the Solar System. It is a K-type giant star which varies in apparent magnitude, between 4.22 and 4.29. The star has a mass which is 2.2 the mass of our sun and has expended 53 times the solar radius. Compared to the Sun, it has only 41% of the abundance of elements other than hydrogen and helium.

InformationEdit

Observation dataEdit

  • Constellation: Antlia
  • Right ascension: 10h 27m 09.10037s
  • Declination: −31° 04′ 03.9961"
  • Apparent magnitude: 4.22 to 4.29

CharacteristicsEdit

  • Spectral type: K4 III
  • U−B color index: +1.63
  • B-V color index: +1.45
  • R-I color index: +0.79
  • Variable type: Suspected

AstrometryEdit

  • Radial velocity (Rv): 12.2 ± 2 km/s
  • Parallax (π): 8.91 ± 0.49 milliarcseconds
  • Distance: 370 light years from Solar System (113 parsecs)

DetailsEdit

  • Mass: 2.2 Solar mass
  • Radius: 53 Solar radius
  • Luminosity (bolometric): 555 Solar luminosity
  • Surface gravity (log g): 1.77 cgs (centimetre–gram–second system)
  • Temperature: 3990 K (6722 °F, 3716 °C)
  • Metallicity [Fe/H]: -0.39 dex

Other desginationsEdit

  • α Ant
  • 2MASS J10270911-3104039
  • Alpha Antliae
  • Alpha Ant
  • CD−30 8465
  • CPC 17 5084
  • CPD−30 3121
  • FK5 392
  • GC 14352
  • HD 90610
  • HIP 51172
  • HR 4104
  • NSV 4862
  • PPM 287713
  • SAO 201405

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