Data Providers: Satellite: Vectors(J2000): Ecc(BLS)

Eccentricity vector which has magnitude equal to the orbit eccentricity and is directed from the central body center to the farthest point on the orbit computed based on Brouwer-Lyddane mean elements with short term perturbations.

Name	Dimension	Type	Description
Time	DateFormat	Real Number	Time.
x	Unitless	Real Number	First component of the selected vector expressed in the reference set of axes. Defines projection of the vector onto the x-axis of the reference set.
y	Unitless	Real Number	Second component of the selected vector expressed in the reference set of axes. Defines projection of the vector onto the y-axis of the reference set.
z	Unitless	Real Number	Third component of the selected vector expressed in the reference set of axes. Defines projection of the vector onto the z-axis of the reference set.
Magnitude	Unitless	Real Number	Magnitude of the selected vector.
x/Magnitude	Unitless	Real Number	First component of the unit vector along the displacement vector that locates selected point in the reference coordinate system. Defines projection of the unit vector onto the x-axis of the reference coordinate system.
y/Magnitude	Unitless	Real Number	Second component of the unit vector along the displacement vector that locates selected point in the reference coordinate system. Defines projection of the unit vector onto the y-axis of the reference coordinate system.
z/Magnitude	Unitless	Real Number	Third component of the unit vector along the displacement vector that locates selected point in the reference coordinate system. Defines projection of the unit vector onto the z-axis of the reference coordinate system.
RightAscension	LongitudeUnit	Real Number	Right ascension of the displacement vector that locates selected point in the reference coordinate system, Represents the angle between the x-axis of the reference coordinate system and projection of the displacement vector onto the xy-plane of the reference coordinate system. The angle is measured counterclockwise about the z-axis of the reference coordinate system.
Declination	LatitudeUnit	Real Number	Declination of the displacement vector that locates selected point in the reference coordinate system, Represents the angle between the displacement vector and its projection onto the xy-plane of the reference coordinate system. The angle is positive when the displacement vector is directed toward positive z-axis of the reference coordinate system.
Co-Declination	AngleUnit	Real Number	Co-Declination of the displacement vector that locates selected point in the reference coordinate system, Represents the angle between the displacement vector and z-axis of the reference coordinate system.
NegativeDeclination	AngleUnit	Real Number	Negative declination of the displacement vector that locates selected point in the reference coordinate system, Represents the angle between the displacement vector and its projection onto the xy-plane of the reference coordinate system. The angle is positive for vectors directed toward negative z-axis of the reference coordinate system.
DirectionAngle x	AngleUnit	Real Number	Angle between the displacement vector that locates selected point in the reference coordinate system and the x-axis of the reference coordinate system.
DirectionAngle y	AngleUnit	Real Number	Angle between the displacement vector that locates selected point in the reference coordinate system and the y-axis of the reference coordinate system.
DirectionAngle z	AngleUnit	Real Number	Angle between the displacement vector that locates selected point in the reference coordinate system and the z-axis of the reference coordinate system.
Derivative x	Unitless Per Time	Real Number	First component of the derivative vector, where the vector is defined as the time rate of change of the selected vector in the reference set of axes. Defines projection of the derivative vector onto the x-axis of the reference set.
Derivative y	Unitless Per Time	Real Number	Second component of the derivative vector, where the vector is defined as the time rate of change of the selected vector in the reference set of axes. Defines projection of the derivative vector onto the y-axis of the reference set.
Derivative z	Unitless Per Time	Real Number	Third component of the derivative vector, where the vector is defined as the time rate of change of the selected vector in the reference set of axes. Defines projection of the derivative vector onto the z-axis of the reference set.
Derivative Magnitude	Unitless Per Time	Real Number	Magnitude of the derivative vector, where the vector is defined as the time rate of change of the selected vector in the reference set of axes.

Name

Dimension

Type

Description

Time

DateFormat

Real Number

Time.

Unitless

Real Number

First component of the selected vector expressed in the reference set of axes. Defines projection of the vector onto the x-axis of the reference set.

Unitless

Real Number

Second component of the selected vector expressed in the reference set of axes. Defines projection of the vector onto the y-axis of the reference set.

Unitless

Real Number

Third component of the selected vector expressed in the reference set of axes. Defines projection of the vector onto the z-axis of the reference set.

Magnitude

Unitless

Real Number

Magnitude of the selected vector.

x/Magnitude

Unitless

Real Number

First component of the unit vector along the displacement vector that locates selected point in the reference coordinate system. Defines projection of the unit vector onto the x-axis of the reference coordinate system.

y/Magnitude

Unitless

Real Number

Second component of the unit vector along the displacement vector that locates selected point in the reference coordinate system. Defines projection of the unit vector onto the y-axis of the reference coordinate system.

z/Magnitude

Unitless

Real Number

Third component of the unit vector along the displacement vector that locates selected point in the reference coordinate system. Defines projection of the unit vector onto the z-axis of the reference coordinate system.

RightAscension

LongitudeUnit

Real Number

Right ascension of the displacement vector that locates selected point in the reference coordinate system, Represents the angle between the x-axis of the reference coordinate system and projection of the displacement vector onto the xy-plane of the reference coordinate system. The angle is measured counterclockwise about the z-axis of the reference coordinate system.

Declination

LatitudeUnit

Real Number

Declination of the displacement vector that locates selected point in the reference coordinate system, Represents the angle between the displacement vector and its projection onto the xy-plane of the reference coordinate system. The angle is positive when the displacement vector is directed toward positive z-axis of the reference coordinate system.

Co-Declination

AngleUnit

Real Number

Co-Declination of the displacement vector that locates selected point in the reference coordinate system, Represents the angle between the displacement vector and z-axis of the reference coordinate system.

NegativeDeclination

AngleUnit

Real Number

Negative declination of the displacement vector that locates selected point in the reference coordinate system, Represents the angle between the displacement vector and its projection onto the xy-plane of the reference coordinate system. The angle is positive for vectors directed toward negative z-axis of the reference coordinate system.

DirectionAngle x

AngleUnit

Real Number

Angle between the displacement vector that locates selected point in the reference coordinate system and the x-axis of the reference coordinate system.

DirectionAngle y

AngleUnit

Real Number

Angle between the displacement vector that locates selected point in the reference coordinate system and the y-axis of the reference coordinate system.

DirectionAngle z

AngleUnit

Real Number

Angle between the displacement vector that locates selected point in the reference coordinate system and the z-axis of the reference coordinate system.

Derivative x

Unitless Per Time

Real Number

First component of the derivative vector, where the vector is defined as the time rate of change of the selected vector in the reference set of axes. Defines projection of the derivative vector onto the x-axis of the reference set.

Derivative y

Unitless Per Time

Real Number

Second component of the derivative vector, where the vector is defined as the time rate of change of the selected vector in the reference set of axes. Defines projection of the derivative vector onto the y-axis of the reference set.

Derivative z

Unitless Per Time

Real Number

Third component of the derivative vector, where the vector is defined as the time rate of change of the selected vector in the reference set of axes. Defines projection of the derivative vector onto the z-axis of the reference set.

Derivative Magnitude

Unitless Per Time

Real Number

Magnitude of the derivative vector, where the vector is defined as the time rate of change of the selected vector in the reference set of axes.