A single pass of a satellite over a station.
Times are UTC. Displaying them in local time is the browser's job; see
Timescale for why.
Constructors
new(catalog_number :
Int32, satellite_name :
String |
Nil, aos :
Time, max :
Time, los :
Time, aos_angles :
Frames::LookAngles, max_angles :
Frames::LookAngles, los_angles :
Frames::LookAngles, elements_age :
Time::Span, clipped_start :
Bool = false, clipped_end :
Bool = false)
SourceInstance methods
aos
Acquisition of signal: when the satellite rises past the threshold.
aos_angles
Look angles at acquisition.
catalog_number
Catalog number of the satellite.
clipped?
Whether the pass runs past either end of the search window.
clipped_end?
Whether the pass was still in progress at the end of the search window.
clipped_start?
Whether the pass was still in progress at the start of the search window.
duration
How long the satellite is above the threshold.
elements_age
Age of the element set at acquisition.
NOTE: reported on every pass, and surfaced by the API and the web
interface, because it is the single most useful predictor of whether the
numbers can be trusted. A pass computed from month-old elements looks
exactly as confident as one computed from elements an hour old, and can
be minutes and tens of degrees wrong.
los
Loss of signal: when it drops back below the threshold.
los_angles
Look angles at loss of signal.
max
Culmination: when it is highest.
max_angles
Look angles at culmination.
max_elevation
Highest elevation reached, in degrees.
satellite_name
Satellite name, if the element set carried one.