list of orbitals parameters in use and denomination in different services. As the purpose of this page is homogenisation of these parameter, the content is subject to change often
| parameter | Description | UCD | exoplanet | DynastVO | mpc | TNO | planets | unit |
| a | semi-major axis | semi_major_axis | semi_major_axis | semi_major_axis | semi_major_axis | semi_major_axis | au | |
| e | eccentricity | eccentricity | eccentricity | eccentricity | eccentricity | _ | ||
| I | inclination to the ecliptic (J2000) | inclination | inclination | inclination | inclination | deg | ||
| Ω | longitude of the ascending node (J2000.0) | long_asc | long_asc | deg | ||||
| ω | argument of perihelion (J2000.0) | periastron | arg_perihel | arg_perihel | deg | |||
| M0 | mean anomaly at the epoch | mean_anomaly | mean_anomaly | deg | ||||
| epoch | epoch (in JD) | epoch (in yr.xx) | JD or ISO | |||||
| ν | true anomaly | |||||||
| rotation period | sidereal rotation period | sidereal_rotation_period | h | |||||
| period | period | period | d | |||||
| tzero_tr | time at the center of transit | tzero_tr | ||||||
| time at periastron | time of periastron passage | JD | ||||||
| time at conjunction | time of the star-planet upper conjunction | t_conj | JD | |||||
| time at center of second transit | tzero_tr_sec | |||||||
| λ Angle | sky-projected angle between the planetary orbital spin and the stellar rotational spin | lambda_angle | deg | |||||
| dynamical type | dynamical_type | Lists here (2 levels): Small bodies sub-types | ||||||
| mass | mass | mass (kg) | kg, mass Earth, mass Jupiter | |||||
| polar_radius | polar_radius | km | ||||||
| equatorial radius | diameter | equatorial_radius equatorial_radius_uncertainty | km | |||||
| mean radius | mean_radius mean_radius_uncertainty | km | ||||||
| rms_deviation | (radius std-dev in Planets) | km | ||||||
| elevation | (departure from ellipsoid) | elevation_min elevation_max | km | |||||
| albedo | albedo | |||||||
| magnitude | For DynastVO | mag - to be changed? | magnitude | |||||
| incidence | deg | |||||||
| emergence | deg | |||||||
| phase | deg |
1 Comment
Stéphane Erard
Completed column for Planets service + added missing lines for this service