Star system, 630 light-years
Kepler-22 and its one planet
Kepler-22 b is an exoplanet 2.1 times Earth's width, 630 light-years away, orbiting in its star's computed habitable zone.
Kepler-22 is a star of spectral type G5 V, 630 light-years from us, with one known planet.
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.
Kepler-22 b
Kepler-22 b is an exoplanet 2.1 times Earth's width, 630 light-years away, orbiting in its star's computed habitable zone.
- Width
- 2.1 × Earth's measured
- Mass
- 9.1 times Earth's measured
- One year
- 289.864 days measured
- Distance from its star
- 0.812 au from the Archive
- Temperature of a bare ball there
- 253 K computed, not measured
- Starlight, against Earth's
- 0.979 × computed
It was found as a small, regular dip in its star's light each time it crosses in front of it in 2011. Its orbit lies inside the conservative habitable zone computed for its star (liquid water on a rocky world's surface would be possible there, which says nothing about whether any is).
See Kepler-22 b in 3D · The picture is an artist's impression.
The star
- Surface temperature
- 5,596 K
- Width
- 0.869 × the Sun's
- Mass
- 0.857 × the Sun's
- Spectral type
- G5 V
- Distance
- 630 light-years
- Habitable zone, computed
- 0.7719 to 1.368 au from the star