Scenario: ICRF Angles
International Celestial Reference Frame.
The ICRF is the best realization of an inertial frame constructed
to date, and thus represents an improvement upon the theory behind
the J2000 frame. While the ICRF and J2000 frames themselves are
very close, they are not identical; moreover, the J2000 frame
rotates (very slowly) over time with respect to the ICRF
frame.
Type: Time-varying data
Availability: Reports | Graphs | Dynamic Displays
| Name |
Description |
| IAU 2000
|
Values computed using the IAU2000A nutation theory and the
IAU1976 precession theory with rate corrections. |
| IAU 2006
|
Values computed using the IAU2000A theory for nutation (as
adjusted) and the P03 theory of precession. |
STK Programming Interface 11.0.1