WASP-17
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Scorpius[1] |
| Right ascension | Template:RA[2] |
| Declination | Script error: No such module "String".° 03′ 42.313″[2] |
| Apparent magnitude (V) | 11.500[3] |
| Characteristics | |
| Spectral type | F6V[4] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: Script error: No such module "val". mas/yr[2] Dec.: Script error: No such module "val". mas/yr[2] |
| Parallax (π) | 2.4811±0.0255 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Details | |
| Mass | Script error: No such module "val".[5] Template:Solar mass |
| Radius | Script error: No such module "val".[5] Template:Solar radius |
| Surface gravity (log g) | 4.14 ± 0.03[6] cgs |
| Temperature | 6509 ± 86[6] K |
| Metallicity [Fe/H] | –0.02 ± 0.09[6] dex |
| Rotational velocity (v sin i) | 10.6 ± 1.3[6] km/s |
| Age | Script error: No such module "val".[5] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist, 1SWASP J155950.94−280342.3[7] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
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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]
Nomenclature
The planet was discovered by the SuperWASP project, hence the name WASP-17.
This was one of the systems selected to be named in the 2019 NameExoWorlds campaign during the 100th anniversary of the IAU, which assigned each country a star and planet to be named. This system was assigned to Costa Rica. WASP-17 is named Dìwö, which in the Bribri language means the Sun, and its planet is named Ditsö̀.[10][11]
Planetary system
Script error: No such module "Labelled list hatnote". As of 2009, an exoplanet has been confirmed to orbit the star. The planet, WASP-17b, is unusual in that it is believed to orbit in the opposite direction to the star's spin (a retrograde orbit), and is twice the size of Jupiter, but half its mass.[12][13] The planet is also named Ditsö̀. It is subject to intensive photo-evaporation, and may be completely destroyed within one billion years from now.[14]
Template:OrbitboxPlanet begin Template:OrbitboxPlanet
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References
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- ↑ Template:Cite constellation
- ↑ a b c d e f Template:Cite Gaia DR3
- ↑ Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ a b c Script error: No such module "Citation/CS1".
- ↑ a b c d Script error: No such module "Citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ D. Ehrenreich and J.-M. Désert, "Mass-loss rates for transiting exoplanets", 2011
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