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WASP-17

WASP-17 / Dìwö
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scorpius[1]
Right ascension 15h 59m 50.9492s[2]
Declination −28° 03′ 42.313″[2]
Apparent magnitude (V) 11.500[3]
Characteristics
Spectral type F6V[4]
Astrometry
Radial velocity (Rv)−48.34±1.07[2] km/s
Proper motion (μ) RA: −8.263(29) mas/yr[2]
Dec.: −9.427(22) mas/yr[2]
Parallax (π)2.4811±0.0255 mas[2]
Distance1,310 ± 10 ly
(403 ± 4 pc)
Details
Mass1.306±0.026[5] M☉
Radius1.572±0.056[5] R☉
Surface gravity (log g)4.14 ± 0.03[6] cgs
Temperature6509 ± 86[6] K
Metallicity [Fe/H]–0.02 ± 0.09[6] dex
Rotational velocity (v sin i)10.6 ± 1.3[6] km/s
Age2.65±0.25[5] Gyr
Other designations
Dìwö, CD−27 10695, TOI-1050, TIC 66818296, WASP-17, TYC 6787-1927-1, 2MASS J15595095-2803422, 1SWASP J155950.94−280342.3[7]
Database references
SIMBADdata
Exoplanet Archivedata

WASP-17, also named Dìwö, is an F-type main sequence star approximately 1,310 light-years away in the constellation Scorpius.[2] It hosts the planet WASP-17b.[4][8]

The star, although similar to the Sun in terms of overall contents of heavy elements, is depleted of carbon. The carbon to oxygen molar ratio of 0.18±0.04 for WASP-17 is well below the solar ratio of 0.55.[9]

  1. ^ Cite error: The named reference Roman1987 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Maxted2011 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Anderson2010 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Bonomo2017 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Torres2012 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ "Newfound Planet Orbits Backward". Space.com. 12 August 2009.
  9. ^ 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

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