Confirmed exoplanets
Every confirmed planet outside the Solar System in the NASA Exoplanet Archive, with its host star, discovery details, orbit, size, mass and temperature. One row per planet.
Columns
Stable keys — use them in the API, SQL and code
| Key | Name | Type | Description |
|---|---|---|---|
| name | Planet | string | Planet name as used by the NASA Exoplanet Archive. |
| host_star | Host star | string | Name of the star (or stellar system) the planet orbits. |
| stars_in_system | Stars in system | integer | Number of stars in the planetary system. |
| planets_in_system | Planets in system | integer | Number of known planets in the system. |
| discovery_year | Discovered | year | Year of discovery as recorded by the archive. |
| discovery_method | Discovery method | string | Technique used to discover the planet, e.g. Transit, Radial Velocity, Microlensing, Imaging. |
| discovery_facility | Discovery facility | string | Observatory or mission that made the discovery. |
| orbital_period_days | Orbital period | number · days | Time to complete one orbit of the host star, in Earth days. |
| semi_major_axis_au | Semi-major axis | number · AU | Average orbital distance from the star in astronomical units (1 AU = Earth–Sun distance). |
| eccentricity | Eccentricity | number | Orbital eccentricity: 0 is a circle, values near 1 are very elongated. |
| radius_earth | Radius | number · R⊕ | Planet radius in Earth radii. |
| radius_calculated | Radius calculated? | boolean | True when the archive estimated the radius (usually from mass) rather than taking a measured value. |
| mass_earth | Mass | number · M⊕ | Planet mass in Earth masses (1 M⊕ = 5.97 × 10²⁴ kg); see Mass type. |
| mass_type | Mass type | string | What the mass value is: 'Mass' (true mass), 'Msini' (minimum mass), 'Msin(i)/sin(i)', or 'M-R relationship' (estimated from radius). |
| equilibrium_temp_k | Equilibrium temp. | number · K | Theoretical temperature of the planet if it were a black body heated only by its star, in kelvin. |
| equilibrium_temp_calculated | Temp. calculated? | boolean | True when the archive computed the equilibrium temperature rather than taking a published value. |
| controversial | Controversial | boolean | True when the planet's status has been questioned in the published literature. |
| star_spectral_type | Star spectral type | string | Spectral classification of the host star. |
| star_temp_k | Star temperature | number · K | Effective surface temperature of the host star, in kelvin. |
| star_mass_solar | Star mass | number · M☉ | Host star mass in solar masses. |
| star_radius_solar | Star radius | number · R☉ | Host star radius in solar radii. |
| distance_pc | Distance | number · pc | Distance from the Sun to the planetary system in parsecs (1 pc ≈ 3.26 light-years). |
| ra_deg | RA | number · ° | Right ascension of the system (J2000), in decimal degrees. |
| dec_deg | Dec | number · ° | Declination of the system (J2000), in decimal degrees. |
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