WASP-17

WASP-17 / Dìwö
Observation data
Epoch J2000.0      Equinox J2000.0
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]
Distance1,310 ± 10 ly
(403 ± 4 pc)
Details
Mass1.2 M☉
Radius1.38 R☉
Surface gravity (log g)4.14 ± 0.03[3] cgs
Temperature6509 ± 86[3] K
Metallicity [Fe/H]–0.02 ± 0.09[3] dex
Rotational velocity (v sin i)10.6 ± 1.3[3] km/s
Age3 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
SIMBADdata
Exoplanet Archivedata

WASP-17 is an F-type main sequence star approximately 1,310 light-years away in the constellation Scorpius.[4][1][5]

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]

  1. ^ a b c d e Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Maxted2011 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference Torres2012 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Anderson2010 was invoked but never defined (see the help page).
  5. ^ "Newfound Planet Orbits Backward". Space.com. 12 August 2009.
  6. ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
  7. ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
  8. ^ Polanski, Alex S.; Crossfield, Ian J. M.; Howard, Andrew W.; Isaacson, Howard; Rice, Malena (2022), "Chemical Abundances for 25 JWST Exoplanet Host Stars with KeckSpec", Research Notes of the American Astronomical Society, 6 (8): 155, arXiv:2207.13662, Bibcode:2022RNAAS...6..155P, doi:10.3847/2515-5172/ac8676