Engee documentation

Besselian Epoch to Julian Epoch

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Conversion of coordinates from epoch B1950.0 to epoch J2000.0.

besselian epoch to julian epoch

Description

The Besselian Epoch to Julian Epoch block converts the values of radius-vector components and velocity attributed to epoch B1950.0 into the corresponding values of и and , assigned to epoch J2000.0 by the formula:

where

Ports

Input

rB1950 - radius vector assigned to the B1950.0 epoch
`vector 3 to 1

Coordinates of the radius vector referred to epoch B1950.0.

Data types: Float64.

vB1950 - velocity referenced to epoch B1950.0
`vector 3 by 1

Components of velocity attributed to epoch B1950.0.

Data types: Float64.

Output

rJ2000 - radius vector assigned to epoch J2000.0
`vector 3 by 1

Coordinates of the radius vector referred to the J2000.0 epoch.

Data types: Float64.

vJ2000 - velocity referenced to the J2000.0 epoch
vector 3 by 1

Components of velocity attributed to the J2000.0 epoch.

Data types: Float64.