WASP-80
Star in the constellation Aquila / From Wikipedia, the free encyclopedia
WASP-80 is a K-type main-sequence star about 162 light-years away from Earth. The star's age is much younger than the Sun's at 1.352±0.222 billion years.[7] WASP-80 could be similar to the Sun in concentration of heavy elements, although this measurement is highly uncertain.[6]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquila |
Right ascension | 20h 12m 40.1692s[1] |
Declination | −02° 08′ 39.1912″[1] |
Apparent magnitude (V) | 11.939 |
Characteristics | |
Evolutionary stage | Main sequence |
Spectral type | K7[citation needed] |
Astrometry | |
Radial velocity (Rv) | 9.82±0.77[2] km/s |
Proper motion (μ) | RA: -132.913[2] mas/yr Dec.: -50.683[2] mas/yr |
Parallax (π) | 20.1141 ± 0.0207 mas[2] |
Distance | 162.2 ± 0.2 ly (49.72 ± 0.05 pc) |
Details | |
Mass | 0.614+0.014 −0.012[3] M☉ |
Radius | 0.586+0.017 −0.018[4] R☉ |
Surface gravity (log g) | 4.60±0.02[5] cgs |
Temperature | 4066±22[5] K |
Metallicity [Fe/H] | 0.13±0.11[6] dex |
Rotation | 23.5±3[7] |
Rotational velocity (v sin i) | 5.04±0.19[5] km/s |
Age | 1.352±0.222[7] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Close
The star was named Petra in 2019 by Jordanian amateur astronomers as part of the NameExoWorlds contest.[8]
Three multiplicity surveys in 2015-2018 did not detect any stellar companions to WASP-80, but a survey in 2020 detected a 0.07M☉ companion candidate at an angular separation 2.132±0.010 arcseconds, with a false alarm probability of 3%.[9]