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Utilities/Axes Transformations

The Julian Epoch to Besselian Epoch block transforms two
3-by-1 vectors of Julian Epoch position
, and Julian Epoch
velocity
into Besselian Epoch position
,
and Besselian Epoch velocity
. The transformation is calculated
using:
![]()
where
![]()
are defined as:





| Input | Dimension Type | Description |
|---|---|---|
First | 3-by-1 vector | Contains the position in Standard Julian Epoch (J2000). |
Second | 3-by-1 vector | Contains the velocity in Standard Julian Epoch (J2000). |
| Output | Dimension Type | Description |
|---|---|---|
First | 3-by-1 vector | Contains the position in Standard Besselian Epoch (B1950). |
Second | 3-by-1 vector | Contains the velocity in Standard Besselian Epoch (B1950). |
"Supplement to Department of Defense World Geodetic System 1984 Technical Report: Part I - Methods, Techniques and Data Used in WGS84 Development," DMA TR8350.2-A.
Besselian Epoch to Julian Epoch
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