The double-star sea
An artistic scene associated with Kepler-1647 b. The scientific record below anchors the setting; it does not establish the depicted environment.
The imagined scene
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.
The scientific anchor
Confirmed giant around two stars; a habitable ocean moon is an untested scenario, not a discovery.
Available measurements
Host: Kepler-1647 · 2 catalog star(s) · Giant-size planet
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.
| Quantity | Value & uncertainty | Unit | Paper / source |
|---|---|---|---|
| Planet radius | 11.874 [+0.1377 / -0.1377] | Earth radii | Kostov et al. 2016 |
| Planet mass | 483 [+206 / -206] | Earth masses | Kostov et al. 2016 |
| Bulk density | 1.59 | g/cm³ | Calculated Value |
| Orbital period | 1,107.6 [+0.0227 / -0.0227] | days | Kostov et al. 2016 |
| Orbital semimajor axis | 2.7205 [+0.007 / -0.007] | AU | Kostov et al. 2016 |
| Orbital eccentricity | 0.0581 [+0.0689 / -0.0689] | Kostov et al. 2016 | |
| Orbital inclination | 90.097 [+0.0035 / -0.0035] | degrees | Kostov et al. 2016 |
| Irradiation | 0.5956 [+0.0339 / -0.0339] | Earth flux | Calculated Value |
| Equilibrium temperature | 242.92 [+3.94 / -3.94] | K; not surface temperature | Calculated Value |
| Catalog stellar effective temperature | 6,210 [+100 / -100] | K | Kostov et al. 2016 |
| Catalog stellar radius | 1.7903 [+0.0055 / -0.0055] | Solar radii | Kostov et al. 2016 |
| Catalog stellar mass | 1.2207 [+0.0112 / -0.0112] | Solar masses | Kostov et al. 2016 |
| Catalog stellar luminosity | 0.64425 [+0.0239 / -0.02529] | log10 Solar luminosity | Gaia DR2 |
| Catalog stellar age | 4.4 [+0.25 / -0.25] | Gyr | Kostov et al. 2016 |
| Catalog stellar metallicity | -0.14 [+0.05 / -0.05] | dex | Kostov et al. 2016 |
| System distance | 1,212.5 [+22.335 / -22.335] | pc | TICv8 |
What about life?
Likely a deep gaseous envelope, without a solid exterior surface. Atmospheric or moon life is speculative; this is not proof that all life is impossible. No confirmed life; no planet-specific biosignature literature review in this release.