Satellite: Passes

Data reported for each pass of the satellite's orbit.

Type: Interval data

Availability: Reports | Graphs

Name Dimension Type Description
Pass Number Unitless Integer Satellite pass number at the stated time.
Start Time DateFormat Real Number The start time of an interval.
End Time DateFormat Real Number The stop time of an interval.
Apogee DistanceUnit Real Number or Text The detic altitude at the time of apoapse. See the definition of the time of apogee as used by this data provider.
Perigee DistanceUnit Real Number or Text The detic altitude at the time of periapse. See the definition of the time of perigee as used by this data provider.
Time of Apogee DateFormat Real Number or Text The time when the range rate is decreasing through zero. The range rate is defined as the dot product of the position and velocity vectors divided by the magnitude of the position vector. If the orbit is very close to circular, the time will not be computed.
Time of Perigee DateFormat Real Number or Text The time when the range rate is increasing through zero. The range rate is defined as the dot product of the position and velocity vectors divided by the magnitude of the position vector. If the orbit is very close to circular, the time will not be computed.
Period TimeUnit Real Number or Text The duration of the pass. If the pass does not start or end on a pass break, the value will be "Partial Pass".
Right Ascen LongitudeUnit Real Number or Text The right ascension, measured in the satellite's central body inertial coordinate system, when the satellite passes through the ascending node during this pass. If the ascending node is not within the pass, then the value will be "Not In Pass". If the orbit is nearly equatorial, the value will be "Equatorial".
Lon Ascen Node LongitudeUnit Real Number or Text The right ascension, measured in the satellite's central body fixed coordinate system, when the satellite passes through the ascending node during this pass. If the ascending node is not within the pass, then the value will be "Not In Pass". If the orbit is nearly equatorial, the value will be "Equatorial".
Lon Descen Node LongitudeUnit Real Number or Text The right ascension, measured in the satellite's central body fixed coordinate system, when the satellite passes through the descending node during this pass. If the descending node is not within the pass, then the value will be "Not In Pass". If the orbit is nearly equatorial, the value will be "Equatorial".
Time of Ascen Node DateFormat Real Number or Text The time when the satellite is at the ascending node (i.e., the Z component of the inertial position vector increases through zero). The inertial position vector is expressed in the coordinate system specified on the pass break settings of the satellite, except that Inertial is used if the setting is Fixed. If the orbit is nearly equatorial, the value will not be computed.
Time of Descen Node DateFormat Real Number or Text The time when the satellite is at the descending node (i.e., the Z component of the inertial position vector decreases through zero). The inertial position vector is expressed in the coordinate system specified on the pass break settings of the satellite, except that Inertial is used if the setting is Fixed. If the orbit is nearly equatorial, the value will not be computed.
Lat of Pass Break LatitudeUnit Real Number The detic latitude of the object at the start time of the pass.
Lon of Pass Break LongitudeUnit Real Number The detic longitude of the object at the start time of the pass.
Alt of Pass Break DistanceUnit Real Number The detic altitude of the object at the start time of the pass.
Min Lat LatitudeUnit Real Number or Text The detic latitude at the time of the minimum latitude during the pass. See the definition of time of minimum lat as used by this data provider.
Max Lat LatitudeUnit Real Number or Text The detic latitude at the time of the maximum latitude during the pass. See the definition of time of maximum lat as used by this data provider.
Time of Min Lat DateFormat Real Number or Text The time of the minimum detic latitude, as found by determining the time at which the Z component of velocity vector is increasing through zero. The velocity vector is expressed in the vehicle's central body fixed coordinate system. If the orbit is nearly equatorial, then the value will not be computed.
Time of Max Lat DateFormat Real Number or Text The time of the maximum detic latitude, as found by determining the time at which the Z component of velocity vector is decreasing through zero. The velocity vector is expressed in the vehicle's central body fixed coordinate system. If the orbit is nearly equatorial, then the value will not be computed.
Path Number Unitless Integer Satellite path number at the stated time.
Time of Max Sun El DateFormat Real Number or Text The time of the maximum solar elevation angle, as found by determining the time at which the elevation angle to the sun is decreasing through zero.
Time of Apparent Noon DateFormat Real Number or Text The time when the satellite's apparent solar time is noon which occurs when the satellite is the same longitude as the apparent position of the Sun.
Time of Apparent Midnight DateFormat Real Number or Text The time when the satellite's apparent solar time is midnight which occurs when the satellite longitude is different from the longitude of the apparent position of the Sun by 180 degrees.
Time of Apparent Dawn DateFormat Real Number or Text The time of apparent dawn occurs when the difference in longitude between the satellite and the apparent position of the Sun is -90 degrees.
Time of Apparent Dusk DateFormat Real Number or Text The time of apparent dusk occurs when the difference in longitude between the satellite and the apparent position of the Sun is 90 degrees.
Apogee Radius DistanceUnit Real Number or Text The radius value at the time of apoapse. See the definition of the time of apogee as used by this data provider.
Perigee Radius DistanceUnit Real Number or Text The radius value at the time of periapse. See the definition of the time of perigee as used by this data provider.
UTM Zone Ascen Node Unitless Text The UTM Zone character indicator for the detic subpoint at the time of the ascending node. Available only when the central body is Earth.
UTM Easting Ascen Node DistanceUnit Real Number or Text The easting value within the UTM zone for the detic subpoint at the time of the ascending node. Available only when the central body is Earth.
UTM Northing Ascen Node DistanceUnit Real Number or Text The northing value within the UTM zone for the detic subpoint at the time of the ascending node. Available only when the central body is Earth.
MGRS Cell Ascen Node Unitless Text The MGRS (Military Grid Reference System) code for the cell area containing the detic subpoint at the time of the ascending node. Available only when the central body is Earth.
UTM Zone Descen Node Unitless Text The UTM Zone character indicator for the detic subpoint at the time of the descending node. Available only when the central body is Earth.
UTM Easting Descen Node DistanceUnit Real Number or Text The easting value within the UTM zone for the detic subpoint at the time of the descending node. Available only when the central body is Earth.
UTM Northing Descen Node DistanceUnit Real Number or Text The northing value within the UTM zone for the detic subpoint at the time of the descending node. Available only when the central body is Earth.
MGRS Cell Descen Node Unitless Text The MGRS (Military Grid Reference System) code for the cell area containing the detic subpoint at the time of the descending node. Available only when the central body is Earth.
UTM Zone of Pass Break Unitless Text The UTM Zone character indicator for the detic subpoint at the start time of the pass. Available only when the central body is Earth.
UTM Easting of Pass Break DistanceUnit Real Number or Text The easting value within the UTM zone for the detic subpoint at the start time of the pass. Available only when the central body is Earth.
UTM Northing of Pass Break DistanceUnit Real Number or Text The northing value within the UTM zone for the detic subpoint at the start time of the pass. Available only when the central body is Earth.
MGRS Cell of Pass Break Unitless Text The MGRS (Military Grid Reference System) code for the cell area containing the detic subpoint at the start time of the pass. Available only when the central body is Earth.

STK Programming Interface 11.0.1