| Symbol | Name | Unit | Notes |
|---|---|---|---|
| Porb | Orbital period | days | |
| e | Orbital eccentricity | - | These numbers are inhomogeneous: see 2011MNRAS.414.1278P. If an upper limit is available then the eccentricity will be given as 0.0 with the upper limit as the upper errorbar. |
| a | Orbital semimajor axis | AU | |
| Teff | Effective temperature of the star | Kelvin | |
| [Fe/H] | Metal abundance of the star | Logarithmic relative to the Sun | I adopt [M/H] where a specific [Fe/H] is not available |
| M* | Mass of the star | Msun | |
| R* | Radius of the star | Rsun | |
| logg | Surface gravity of the star | logarithmic in c.g.s. units | |
| ρ* | Density of the star | ρsun | |
| Mp | Mass of the planet | Mjup | Set to 0.0 if only an upper limit is known. The upper limit is then given as the upper errorbar. |
| Rp | Radius of the planet | Rjup | |
| gp | Surface gravity of the planet | m/s2 | |
| ρp | Density of the planet | ρjup | Set to 0.0 if only an upper limit to the mass of the planet is known. The upper limit is then given as the upper errorbar. |
| Teq | Equilibrium temperature of the planet | Kelvin | These numbers are inhomogeneous as different albedo and heat redistribution parameters are used by different people |
| Symbol | Name | Unit | Notes |
|---|---|---|---|
| Teff | Effective temperature of the star | Kelvin | |
| [M/H] | Metal abundance of the star | Logarithmic relative to the Sun | I adopt [M/H] where a specific [Fe/H] is not available |
| K | Orbital velocity amplitude of the star | m/s | |
| i | Orbital inclination | degrees | i = 90 degrees indicates a system where the orbit is edge-on as seen from Earth |
| r* | Fractional radius of the star (R*/a) | - | |
| rp | Fractional radius of the planet (Rp/a) | - | |
| M* | Mass of the star | Msun | |
| R* | Radius of the star | Rsun | |
| logg | Surface gravity of the star | logarithmic in c.g.s. units | |
| ρ* | Density of the star | ρsun | |
| a | Orbital semimajor axis | AU | |
| Mp | Mass of the planet | Mjup | |
| Rp | Radius of the planet | Rjup | |
| gp | Surface gravity of the planet | m/s2 | |
| ρp | Density of the planet | ρjup | |
| Teq | Equilibrium temperature of the planet | Kelvin | In the case of no albedo (A=0) and no heat redistribution (f=0) |
| Θ | Safronov number | - | Ratio of the escape velocity to the orbital velocity of the planet |
| Symbol | Name | Unit | Notes |
|---|---|---|---|
| Type | "TEP" for a transiting planet and "BD" for a transiting brown dwarf | ||
| RA | Right ascension of the target | hours minutes seconds | J2000 epoch |
| Dec | Declination of the target | ±degrees minutes seconds | J2000 epoch |
| V | V-band apparent magnitude | mag | |
| τ(4-1) | Full duration of a transit | days | |
| ΔF/F | Depth of a transit | percent | This quantity varies slightly with wavelength due to limb darkening and light emitted from the planet |
| T0 | Reference time of mid-transit | HJD or BJD | Time at which the midpoint of one particular transit occurred |
| Porb | Orbital period | days | |
| Symbol | Name | Unit | Notes |
|---|---|---|---|
| λ | Sky-projected angle between the axes of the planet's orbit and the star's spin | degrees | Some studies measure the angle β instead. The two quantities are simply related by: λ = −β |
Last modified: 12/12/2011 John Southworth (Keele University, UK)