Kepler-17

Planetary system · 2350.8 light-years away

Kepler-17 is 2,351 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G2 V star; the first was found in 2011 by transit (Kepler).

Fly there in 3D

Worth knowing

Kepler-17 b goes round its star every 35.7 hours, 59 times as often as Mercury goes round the Sun.

The star

Spectral typeG2 V
Surface temperature5,781 K
Mass1.04 solar masses
Radius1.01034 solar radii
Luminosity1.027 times the Sun
Apparent magnitude14.314
Ageabout 1.8 billion years
Distance from the Sun2350.8 light-years (720.8 parsecs)
Position (J2000)RA 298.3952°, Dec 47.8150°
ConstellationCygnus

Planets (1)

PlanetYearOrbitRadiusMassFound
Kepler-17 b35.7 hours0.0259 AU14.68 R⊕778.65 M⊕Transit, 2011

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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