Kepler-1649

Planetary system · 300.7 light-years away

Kepler-1649 is 301 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 3,240 K star; the first was found in 2017 by transit (Kepler).

Fly there in 3D

Worth knowing

Kepler-1649 b goes round its star every 8.69 days, 10 times as often as Mercury goes round the Sun.

The star

Surface temperature3,240 K
Mass0.1977 solar masses
Radius0.2317 solar radii
Luminosity0.00516 times the Sun
Apparent magnitude17.95
Distance from the Sun300.7 light-years (92.2 parsecs)
Position (J2000)RA 292.5030°, Dec 41.8300°
ConstellationCygnus

Planets (2)

PlanetYearOrbitRadiusMassFound
Kepler-1649 b8.69 days0.0514 AU1.017 R⊕1.03 M⊕ estimatedTransit, 2017
Kepler-1649 c19.5 days0.0649 AU1.06 R⊕1.2 M⊕ estimatedTransit, 2020

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 3,240 K, 0.0052 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.075 to 0.15 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 301 years ago, around 1730.

Nearest systems to it

Also found by Kepler

Sources

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