WASP-18

Planetary system · 402.8 light-years away · also HD 10069, HIP 7562

WASP-18 is 403 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this F6 IV-V star; the first was found in 2009 by transit (SuperWASP).

Fly there in 3D

Worth knowing

WASP-18 b goes round its star every 22.6 hours, 93 times as often as Mercury goes round the Sun.

WASP-18 is one of 2 stars in its system. The position of the other star is not catalogued, so only WASP-18 and its planets are drawn.

The star

Spectral typeF6 IV-V
Surface temperature6,432 K
Mass1.294 solar masses
Radius1.319 solar radii
Luminosity2.68 times the Sun
Apparent magnitude9.28
Ageabout 1.57 billion years
Distance from the Sun402.8 light-years (123.5 parsecs)
Position (J2000)RA 24.3545°, Dec -45.6778°
ConstellationPhoenix

Planets (1)

PlanetYearOrbitRadiusMassFound
WASP-18 b22.6 hours0.0202 AU13.899 R⊕3241.8 M⊕Transit, 2009

Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.

Sources

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