Kepler-25

Planetary system · 793.4 light-years away

Kepler-25 is 793 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this F8 star; the first was found in 2011 by transit (Kepler).

Fly there in 3D

Worth knowing

Kepler-25 b goes round its star every 6.24 days, 14 times as often as Mercury goes round the Sun.

Kepler-25 is one of 2 stars in its system. The position of the other star is not catalogued, so only Kepler-25 and its planets are drawn.

The star

Spectral typeF8
Surface temperature6,354 K
Mass1.165 solar masses
Radius1.316 solar radii
Luminosity2.64 times the Sun
Apparent magnitude10.769
Ageabout 2.75 billion years
Distance from the Sun793.4 light-years (243.2 parsecs)
Position (J2000)RA 286.6384°, Dec 39.4879°
ConstellationLyra

Planets (3)

PlanetYearOrbitRadiusMassFound
Kepler-25 b6.24 days0.0695 AU2.748 R⊕8.7 M⊕Transit, 2011
Kepler-25 c12.7 days0.112 AU5.217 R⊕15.2 M⊕Transit, 2011
Kepler-25 d122.4 days0.416 AU10 R⊕ estimated71.9 M⊕Radial Velocity, 2014

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.

The planets, compared

For a star of 6,354 K, 2.6 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.49 to 2.60 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.

The light you see left 793 years ago, around 1230.

Nearest systems to it

Also found by Kepler

Sources

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