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.
Information[]
Observation data[]
- Constellation: Antlia
- Right ascension: 10h 27m 09.10037s
- Declination: −31° 04′ 03.9961"
- Apparent magnitude: 4.22 to 4.29
Characteristics[]
- 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
Astrometry[]
- Radial velocity (Rv): 12.2 ± 2 km/s
- Parallax (π): 8.91 ± 0.49 milliarcseconds
- Distance: 370 light years from Solar System (113 parsecs)
Details[]
- 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 desginations[]
- 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