J2000 Angles
Earth Orientation information based on J2000 system.Available for these objects: Scenario
Type: Time-varying data.
Availability: Reports | Graphs | Dynamic Displays | Strip Charts
Data Provider Elements
| Name | Dimension | Type | Description |
|---|---|---|---|
| Time | Date | Real Number or Text | Time. |
| Apparent GHA | Angle | Real Number or Text | The sidereal Greenwich Hour Angle (GHA) that includes equation of the equinox. |
| Mean GHA 0hUT1 | Angle | Real Number or Text | The sidereal Greenwich Hour Angle (GHA) at 0 in Universal Time (UT1) of input day. The angle does not include equation of the equinox. |
| Mean GHA | Angle | Real Number or Text | The sidereal Greenwich Hour Angle (GHA) that does not include equation of the equinox. |
| MeanObliquity | Angle | Real Number or Text | Obliquity of the ecliptic plane that does not include the effect of the nutation. |
| TrueObliquity | Angle | Real Number or Text | Obliquity of the ecliptic plane that includes the effect of the nutation. |
| UT1-UTC | Time | Real Number | The difference between Universal Time (UT1) and Coordinated Universal Time (UTC). |
| EqnOfEquinox | Angle | Real Number or Text | The effect of the nutation on the Right Ascension of the equinox. |
| MJD | Unitless | Real Number | Modified Julian Date (UTC time scale). |
| Nut. in Obliquity | Angle | Real Number or Text | The effect of the nutation on the obliquity of the ecliptic plane. |
| Nut. in Longitude | Angle | Real Number or Text | The effect of the nutation on the celestial longitude. |
| Pole Wander X | Angle | Real Number or Text | Small angle related to changes in orientation of the earth pole due to continental drift. |
| Pole Wander Y | Angle | Real Number or Text | Small angle related to changes in orientation of the earth pole due to continental drift. |
| Apparent GHA withUT1UTC | Angle | Real Number or Text | The sidereal Greenwich Hour Angle (GHA) that accounts for the difference between UT1 and UTC time scales and includes equation of the equinox. |
| Mean GHA withUT1UTC | Angle | Real Number or Text | The sidereal Greenwich Hour Angle (GHA) that accounts for the difference between UT1 and UTC time scales, but does not include equation of the equinox. |
| EqnOfTime | Time | Real Number | The difference between the apparent and mean solar times. |
| Solar Declination | Angle | Real Number or Text | Declination of the sun in the earth centered J2000 coordinate system. |
| Solar Right Ascension | Longitude | Real Number or Text | Right Ascension of the sun in the earth centered J2000 coordinate system. |