Star system, 2,400 light-years
Kepler-69 and its two planets
Kepler-69 c is an exoplanet 1.71 times Earth's width, 2,400 light-years away, orbiting at the edge of its star's computed habitable zone.
Kepler-69 is a star of spectral type G4 V, 2,400 light-years from us, with two known planets. This page takes them one at a time.
Drawn at the system's own scale, every orbit from the Archive's numbers.
What is measured, what is computed, what is imagined.
measured The period, and where the table says so the width and the mass, by the method named in each section.
computed Anything marked computed: the size of an orbit where Kepler's third law corrects the table, the temperature of a bare ball at that distance, the starlight received, and the habitable zone.
imagined The picture is an artist's impression. Nobody has seen the surface of a planet of another star: its colour, clouds and land are not known, and the share picture says so in its corner.
The planets
Kepler-69 b
Kepler-69 b is an exoplanet 2.24 times Earth's width, 2,400 light-years away, orbiting closer to its star than the habitable zone we compute for it.
- Width
- 2.24 × Earth's measured
- Mass
- about 5.65 times Earth's estimated by the Archive from the planet's size, not measured
- One year
- 13.7223 days measured
- Distance from its star
- 0.1046 au computed from the period and the star's mass
- Temperature of a bare ball there
- 744 K computed, not measured
- Starlight, against Earth's
- 73.1 × computed
It was found as a small, regular dip in its star's light each time it crosses in front of it in 2013. Its orbit is closer to its star than the habitable zone computed for it. The Archive's own distance for it is 0.094 au; the three papers behind its period, its star's mass and that distance do not agree with Kepler's third law, so the page uses the one the period and the star's mass give.
See Kepler-69 b in 3D · The picture is an artist's impression.
Kepler-69 c
Kepler-69 c is an exoplanet 1.71 times Earth's width, 2,400 light-years away, orbiting at the edge of its star's computed habitable zone.
- Width
- 1.71 × Earth's measured
- Mass
- about 3.57 times Earth's estimated by the Archive from the planet's size, not measured
- One year
- 242.461 days measured
- Distance from its star
- 0.7094 au computed from the period and the star's mass
- Temperature of a bare ball there
- 286 K computed, not measured
- Starlight, against Earth's
- 1.59 × computed
It was found as a small, regular dip in its star's light each time it crosses in front of it in 2013. Its orbit lies at the edge of the conservative habitable zone computed for its star. The Archive's own distance for it is 0.64 au; the three papers behind its period, its star's mass and that distance do not agree with Kepler's third law, so the page uses the one the period and the star's mass give.
See Kepler-69 c in 3D · The picture is an artist's impression.
The star
- Surface temperature
- 5,638 K
- Width
- 0.93 × the Sun's
- Mass
- 0.81 × the Sun's
- Spectral type
- G4 V
- Distance
- 2,400 light-years
- Habitable zone, computed
- 0.8572 to 1.518 au from the star