Imagined view associated with Kepler-22 b
Field guide / Sub-Neptune / Neptune-size

Kepler-22 b

A real world. 2 imagined possibilities.

Watch this world orbit ↗
Artist’s imagined environment
Host starKepler-22
One orbit290 days
Planet radius2.1 Earth radii
Distance from us635 light-years

Catalog central values; reported uncertainties, limits and sources are in the science record below.

A place in the universe

Under these skies,
we imagined…

Explore this world through landscapes, life and stories. Each scene is connected to its intended planet and includes the science, the viewpoint and the details we invented.

Ancient Alien Worlds · When Stone Held the Stars01 imagined view

The Tide of Three MoonsKepler-22 bThe Tide of Three MoonsAncient Alien Worlds · When Stone Held the Stars

Alien Home Life · Where We Belong01 imagined view

The Garden of Quiet LightsKepler-22 bThe Garden of Quiet LightsAlien Home Life · Where We Belong
The evidence record

The real world, in the literature

The host system is real. All alien organisms, robots, societies and social histories are fictional. Moons, rings, terrain and weather are artistic assumptions unless specifically supported by a cited source. These images are not calibrated simulations of the sky.

NASA composite catalog values may combine different papers. Errors and upper/lower limits are retained. “Calculated Value” means derived or estimated. Msini is a minimum mass. Missing values are unknown. A multiple-star system’s single stellar row does not describe every component. Equilibrium temperature is not a measured surface temperature.

QuantityValue & uncertaintyUnitPaper / source
Planet radius2.1 [+0.12 / -0.12]Earth radiiBonomo et al. 2023
Planet mass≤ 9.1 (upper limit)Earth massesBonomo et al. 2023
Bulk density≤ 5.2 (upper limit)g/cm³Bonomo et al. 2023
Orbital period289.86 [+1.3e-05 / -1.3e-05]daysBonomo et al. 2023
Orbital semimajor axis0.812 [+0.011 / -0.013]AUBonomo et al. 2023
Orbital eccentricity≤ 0.72 (upper limit)Bonomo et al. 2023
Orbital inclination89.764 [+0.025 / -0.042]degreesBonomo et al. 2023
Irradiation1.013 [+0.06 / -0.06]Earth fluxBonomo et al. 2023
Equilibrium temperature279 [+4 / -4]K; not surface temperatureBonomo et al. 2023
Catalog stellar effective temperature5,596 [+61 / -61]KBonomo et al. 2023
Catalog stellar radius0.869 [+0.011 / -0.011]Solar radiiBonomo et al. 2023
Catalog stellar mass0.857 [+0.051 / -0.043]Solar massesBonomo et al. 2023
Catalog stellar luminosity-0.19024 [+0.01013 / -0.01183]log10 Solar luminosityQ1-Q17 DR25 Supplemental KOI Table
Catalog stellar age7 [+4 / -4.2]GyrBonomo et al. 2023
Catalog stellar metallicity-0.255 [+0.065 / -0.065]dexBonomo et al. 2023
System distance194.64 [+0.927 / -0.918]pcTICv8

NASA system dossier ↗