Kepler-449

Planetary system · 789.1 light-years away

Kepler-449 is 789 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,649 K star; the first was found in 2015 by transit (Kepler).

Fly there in 3D

Worth knowing

Kepler-449 b goes round its star every 12.6 days, 7 times as often as Mercury goes round the Sun.

The star

Surface temperature5,649 K
Mass1.02 solar masses
Radius1.467 solar radii
Luminosity1.977 times the Sun
Apparent magnitude11.448
Ageabout 9.77 billion years
Distance from the Sun789.1 light-years (241.9 parsecs)
Position (J2000)RA 293.7328°, Dec 41.9006°
ConstellationCygnus

Planets (2)

PlanetYearOrbitRadiusMassFound
Kepler-449 b12.6 days0.103 AU2.056 R⊕4.88 M⊕ estimatedTransit, 2015
Kepler-449 c33.7 days0.198 AU2.764 R⊕8.07 M⊕ estimatedTransit, 2015

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 5,649 K, 2.0 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.35 to 2.38 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 789 years ago, around 1240.

Nearest systems to it

Also found by Kepler

Sources

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