KOI-319

Planetary system · 2153.1 light-years away

KOI-319 is 2,153 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,880 K star; the first was found in 2014 by transit timing variations (Kepler).

Fly there in 3D

Worth knowing

KOI-319 b goes round its star every 46.1 days, 1.9 times as often as Mercury goes round the Sun.

Where the archive gives only a period or only an orbit size, the other is worked out from Kepler’s third law with the star’s mass.

The star

Surface temperature5,880 K
Mass1.325 solar masses
Radius2.064 solar radii
Luminosity5.226 times the Sun
Apparent magnitude12.675
Ageabout 3.86 billion years
Distance from the Sun2153.1 light-years (660.1 parsecs)
Position (J2000)RA 290.1175°, Dec 44.8730°
ConstellationCygnus

Planets (2)

PlanetYearOrbitRadiusMassFound
KOI-319 c80.1 days0.399 AU from Kepler’s law11.9 R⊕ estimated8803.8 M⊕Transit Timing Variations, 2014
KOI-319 b46.1 days0.267 AU10.67 R⊕3178.3 M⊕Transit, 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 5,880 K, 5.2 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 2.16 to 3.80 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 2,153 years ago, around 100 BC.

Nearest systems to it

Also found by Kepler

Sources

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