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1 known planet · 2,307 light years

KIC 8121913

KIC 8121913 is a yellow star 2,307 light years away, with 1 confirmed planet. Distances and orbital speeds are to scale; the star and planets are enlarged so you can see them.

Day 0
habitable zone (estimate)planet orbits

Green band: where liquid water could exist on a planet's surface. Drag to turn the system, pinch or scroll to zoom.

The star

The star

KIC 8121913

Type
yellow star
Surface
≈ 5,975 K
Size
2.23 × the Sun
Mass
1.46 × the Sun
Brightness
5.49 × the Sun
Habitable zone
1.74–4.08 AU

The planets

KIC 8121913

KIC 8121913 b

Year
3.29 days
Distance from star
0.0491 AU
Mass
at least 2.1 Jupiters
Size
13 × Earth
Found
2021, orbital brightness modulation (Kepler)
Outside the habitable zone

Masses found by the wobble method are minimums, because the orbit's tilt is unknown. Temperatures are equilibrium estimates for a bare planet, before any atmosphere.

How we know

Orbital Brightness Modulation

Discovered by orbital brightness modulation.

Sources

  1. Planet and star parameters: NASA Exoplanet Archive, Planetary Systems Composite Parameters, retrieved 1 Nov 2026. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.
  2. Position: HYG Database v4.1 (CC BY-SA 4.0).
  3. Habitable zone: a simple estimate from the star's brightness (√L × 0.95 to 1.67 AU), shown as a guide.
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