The true equator mean equinox coordinate
system evaluated at the requested time.
| Name |
Dimension |
Type |
Description |
| Time |
DateFormat |
Real Number |
Time. |
| Z Comp of Ang
Mom |
Unitless |
Real Number |
The Z component of the orbit angular momentum
vector. This action variable, classically designated as H, is
paired with the right ascension of the ascending node angle
variable. |
| Ang Momentum |
Unitless |
Real Number |
The magnitude of the orbit angular momentum vector.
This action variable, classically designated as G, is paired with
the argument of perigee angle variable. |
| sqrt(mu * a) |
Unitless |
Real Number |
The sqrt of the product of the gravitational
parameter and the semi-major axis. This action variable,
classically designated as L, is paired with the mean anomaly angle
variable. |
| RAAN |
LongitudeUnit |
Real Number |
The angle in the XY plane from the X axis to the
ascending node, measured in a right-handed sense about the Z axis.
in the equatorial plane. For equatorial orbits, the ascending node
is defined to be directed along the positive X axis, and thus the
value is 0.0. The Calc Object allows a choice of coordinate
systems. The default is Earth Centered Inertial. |
| Arg of Perigee |
AngleUnit |
Real Number |
The angle from the ascending node to the periapsis
vector measured in the orbit plane in the direction of the object's
motion. The periapsis vector locates the closest point of the
orbit. For a circular orbit, the value is defined to be zero (i.e.,
periapsis at the ascending node). |
| Mean Anomaly |
AngleUnit |
Real Number |
A measure of the time past periapsis passing,
expressed as an angle. |