This template allows AstRoBot to update orbital elements automatically, using data from the Heavens-Above and n2yo websites. (Note that due to recent changes to the Heavens Above website, future support for this source may be discontinued).  Do not use this template on articles for spacecraft which are not currently in Earth orbit. Please read the instructions fully before setting up automatic updates. Consider discussing updates on the article's talk page or at the WikiProject talk page beforehand to ensure AstRoBot is suitable for that article.   Usage  Before using this template, it is recommended that you begin a discussion on the article's talk page and determine whether there is a consensus for that article to contain automatically updated orbital elements.   {{Orbit|<parameter name>|<initial value>}} to display a parameter in the article  {{Orbit|<parameter name>|<initial value>|hide}} for a control parameter which is not displayed  Two control parameters; epoch and satcat are required for the bot to retrieve data. It is strongly recommended that they be displayed in the article, however the hide parameter is available if it is needed.  The template can be nested inside others, such as  for the apogee, perigee, altitude at epoch and semi-major axis: {{Convert|{{Orbit|<parameter name>|<initial value>}}|km|mi}}  Use of this template for spacecraft outside Earth orbit is not recommended.   Setting up    Supported parameters   Data Parameter name Infobox field Units RemarksArgument of perigeearg of perigeeorbit_arg_periapsisdegrees Apogee apogee orbit_apoapsis kilometres Altitude at epoch altitude at epoch (none) kilometres Eccentricity eccentricity orbit_eccentricity dimensionless Epoch date epoch orbit_epoch n/a (date) required Epoch time epoch time included in orbit_epoch n/a (time) Include, along with epoch, for greater precision Inclination inclination orbit_inclination degrees Mean anomaly mean anomaly orbit_mean_anomaly degrees True anomaly true anomaly (none) degrees Eccentric anomaly eccentric anomaly (none) degrees Number of orbits completed orbits orbits_completedorbit_rev_number dimensionless Updates two infobox fields - orbits_completed is intended as a total over the spacecraft's lifetime, while rev_number is specific to the displayed elset. From the bot's perspective, using the most up-to-date information, they are identical Perigee perigee periapsis kilometres Right ascension of the ascending node RAAN orbit_RAAN degrees Speed at epoch speed at epoch n/a kilometres per second Not suitable for eccentric orbits Average Speed average speed orbit_velocity kilometres per second (v2.0 feature, not currently implemented) Mean motion mean motion orbit_mean_motion dimensionless Given in orbits per day Orbital period period orbit_period minutes Semi-major axis semimajor axis orbit_semimajor kilometres Citation ref (none) n/a (string) Provides a reference to the page the orbital elements were obtained from. Must only include a reference, wrapped in <ref> tags Satellite Catalog Number satcat SATCAT n/a (string) Required, not updated (constant) - used to identify satellite Data source datasource n/a n/a HN, NH, H or NSpecifies whether the bot uses Heavens-Above (H) or n2yo (N) for orbit data, and if both are selected the order of preference. Defaults to NH (n2yo then heavens-above)(v2.0 feature, not currently implemented)   See also