WASP-17
Star in the constellation Scorpius / From Wikipedia, the free encyclopedia
WASP-17 is an F-type main sequence star approximately 1,310 light-years away in the constellation Scorpius.[4][1][5]
Quick Facts Observation data Epoch J2000.0 Equinox J2000.0, Constellation ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
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Constellation | Scorpius |
Right ascension | 15h 59m 50.9492s[1] |
Declination | −28° 03′ 42.313″[1] |
Apparent magnitude (V) | 11.500[2] |
Characteristics | |
Spectral type | F6V |
Astrometry | |
Proper motion (μ) | RA: −8.263(29) mas/yr[1] Dec.: −9.427(22) mas/yr[1] |
Parallax (π) | 2.4811 ± 0.0255 mas[1] |
Distance | 1,310 ± 10 ly (403 ± 4 pc) |
Details | |
Mass | 1.2 M☉ |
Radius | 1.38 R☉ |
Surface gravity (log g) | 4.14 ± 0.03[3] cgs |
Temperature | 6509 ± 86[3] K |
Metallicity [Fe/H] | –0.02 ± 0.09[3] dex |
Rotational velocity (v sin i) | 10.6 ± 1.3[3] km/s |
Age | 3 Gyr |
Other designations | |
Dìwö, 1SWASP J155950.94−280342.3, USNO-B1.0 0619-0419495, 2MASS J15595095-2803422, TYC2 6787-1927-1, Gaia DR2 6042793005779654656 | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
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WASP-17 is named Dìwö. The name was selected in the NameExoWorlds campaign by Costa Rica, during the 100th anniversary of the IAU. Dìwö in Bribri language means the sun.[6][7]
The star, although similar to Sun in terms of overall contents of heavy elements, is depleted of carbon. Carbon to oxygen molar ratio of 0.18±0.04 for WASP-17 is well below solar ratio of 0.55.[8]