Star system, 1,300 light-years
WASP-17 and its one planet
WASP-17 b is an exoplanet 20.961 times Earth's width, about 1.9 times Jupiter's, 1,300 light-years away, orbiting closer to its star than the habitable zone we compute for it.
WASP-17 is a star of spectral type F4, 1,300 light-years from us, with one known planet.
Drawn at the system's own scale, every orbit from the Archive's numbers.
What is measured, what is computed, what is imagined.
measured The period, and where the table says so the width and the mass, by the method named in each section.
computed Anything marked computed: the size of an orbit where Kepler's third law corrects the table, the temperature of a bare ball at that distance, the starlight received, and the habitable zone.
imagined The picture is an artist's impression. Nobody has seen the surface of a planet of another star: its colour, clouds and land are not known, and the share picture says so in its corner.
WASP-17 b
WASP-17 b is an exoplanet 20.961 times Earth's width, about 1.9 times Jupiter's, 1,300 light-years away, orbiting closer to its star than the habitable zone we compute for it.
- Width
- 20.961 × Earth's measured
- Mass
- 247.907 times Earth's measured
- One year
- 3.73543 days measured
- Distance from its star
- 0.06201 au computed from the period and the star's mass
- Temperature of a bare ball there
- 1,455 K computed, not measured
- Starlight, against Earth's
- 1070 × computed
It was found as a small, regular dip in its star's light each time it crosses in front of it in 2009. Its orbit is closer to its star than the habitable zone computed for it. The Archive's own distance for it is 0.0515 au; the three papers behind its period, its star's mass and that distance do not agree with Kepler's third law, so the page uses the one the period and the star's mass give.
See WASP-17 b in 3D · The picture is an artist's impression.
The star
- Surface temperature
- 6,550 K
- Width
- 1.49 × the Sun's
- Mass
- 2.28 × the Sun's
- Spectral type
- F4
- Distance
- 1,300 light-years
- Habitable zone, computed
- 1.837 to 3.19 au from the star