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