Alpha Antliae
From Infogalactic: the planetary knowledge core
 Location of α Antliae to the upper left of center |
|
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
|
|---|---|
| Constellation | Antlia |
| Right ascension | 10h 27m 09.10037s[1] |
| Declination | −31° 04′ 03.9961″[1] |
| Apparent magnitude (V) | 4.22 to 4.29[2] |
| Characteristics | |
| Spectral type | K4 III[3] |
| U−B color index | +1.63[4] |
| B−V color index | +1.45[4] |
| R−I color index | +0.79[4] |
| Variable type | Suspected[2] |
| Astrometry | |
| Radial velocity (Rv) | 12.2 ± 2[5] km/s |
| Proper motion (μ) | RA: –81.61[1] mas/yr Dec.: +10.53[1] mas/yr |
| Parallax (π) | 8.91 ± 0.49[1] mas |
| Distance | 370 ± 20 ly (112 ± 6 pc) |
| Details | |
| Mass | 2.2[6] M☉ |
| Radius | 45[7] R☉ |
| Luminosity (bolometric) | 555[6] L☉ |
| Surface gravity (log g) | 1.77[8] cgs |
| Temperature | 4120[8] K |
| Metallicity [Fe/H] | -0.39[8] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Alpha Antliae (Alpha Ant, α Antliae, α Ant) is the brightest star in the constellation of Antlia but it has not been given a proper name.[10] It is approximately 370 light-years from the Solar System. It is a K-type giant star that varies in apparent visual magnitude between 4.22 and 4.29. This star has 2.2 times the mass of the Sun and has expanded to 45 times the solar radius. Compared to the Sun, it has only 41% of the abundance of elements other than hydrogen and helium.[2][9]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 NSV 4862, database entry, New Catalogue of Suspected Variable Stars, the improved version, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line October 3, 2008.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 Alpha Antliae, Stars, Jim Kaler. Accessed on line October 3, 2008.
- ↑ HD 90610, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line October 3, 2008.
- ↑ 8.0 8.1 8.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 9.0 9.1 NSV 4862 -- Variable Star, database entry, SIMBAD. Accessed on line October 3, 2008.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
