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