WASP-80
WASP-80 is a K-type main-sequence star about 162 light-years away. The star's age is much younger than the Sun's at 1.352±0.222 billion years. WASP-80 is similar to the Sun in concentration of heavy elements, although this measurement is highly uncertain.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 20h 12m 40.1692s |
| Declination | −02° 08′ 39.1912″ |
| Apparent magnitude (V) | 11.939 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | K7 |
| Astrometry | |
| Radial velocity (Rv) | 9.82±0.77 km/s |
| Proper motion (μ) | RA: -132.913 mas/yr Dec.: -50.683 mas/yr |
| Parallax (π) | 20.1141 ± 0.0207 mas |
| Distance | 162.2 ± 0.2 ly (49.72 ± 0.05 pc) |
| Details | |
| Mass | 0.614+0.014 −0.012 M☉ |
| Radius | 0.586+0.017 −0.018 R☉ |
| Surface gravity (log g) | 4.60±0.02 cgs |
| Temperature | 4066±22 K |
| Metallicity [Fe/H] | 0.13±0.11 dex |
| Rotation | 23.5±3 |
| Rotational velocity (v sin i) | 5.04±0.19 km/s |
| Age | 1.352±0.222 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
The star was named Petra in 2019 by Jordanian amateur astronomers as part of the NameExoWorlds contest.
Three multiplicity surveys in 2015-2018 did not detect any stellar companions to WASP-80, but a survey in 2020 did detect a 0.07M☉ companion candidate at an angular separation 2.132±0.010 arcseconds, with a false alarm probability of 3%.
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