HD 209458 b
A real world. 2 imagined possibilities.
Watch this world orbit ↗Catalog central values; reported uncertainties, limits and sources are in the science record below.
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.
Planetary landscapes01 imagined view
WARRIOR · Strength & connection01 imagined view
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.
Henry et al. 2000 · Stassun et al. 2017 · Southworth 2010 · Bonomo et al. 2017 · ExoFOP · Barstow et al. 2017 · Kokori et al. 2023 · TICv8
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 | 15.581 [+0.22418 / -0.22418] | Earth radii | Stassun et al. 2017 |
| Planet mass | 232.02 [+12.713 / -12.713] | Earth masses | Stassun et al. 2017 |
| Bulk density | 0.362 [+0.006 / -0.006] | g/cm³ | Southworth 2010 |
| Orbital period | 3.5247 [+3.8e-07 / -3.8e-07] | days | Stassun et al. 2017 |
| Orbital semimajor axis | 0.04707 [+0.00045 / -0.00047] | AU | Bonomo et al. 2017 |
| Orbital eccentricity | 0 | Stassun et al. 2017 | |
| Orbital inclination | 86.71 [+0.05 / -0.05] | degrees | Stassun et al. 2017 |
| Irradiation | 587.1 | Earth flux | ExoFOP |
| Equilibrium temperature | 1,459 [+12 / -12] | K; not surface temperature | Southworth 2010 |
| Catalog stellar effective temperature | 6,091 [+10 / -10] | K | Stassun et al. 2017 |
| Catalog stellar radius | 1.19 [+0.02 / -0.02] | Solar radii | Stassun et al. 2017 |
| Catalog stellar mass | 1.23 [+0.09 / -0.09] | Solar masses | Stassun et al. 2017 |
| Catalog stellar luminosity | 0.23086 [+0.015 / -0.0123] | log10 Solar luminosity | Barstow et al. 2017 |
| Catalog stellar age | 3.1 [+0.8 / -0.7] | Gyr | Kokori et al. 2023 |
| Catalog stellar metallicity | 0.01 | dex | Stassun et al. 2017 |
| System distance | 48.302 [+0.124 / -0.1234] | pc | TICv8 |