Orbit Ground Track Repeat Cycle Calculator
Earth observation & remote sensing: Calculate Earth $J_2$ oblateness nodal precession rate ($\dot{\Omega}$), anomalistic nodal period, integer ground track repeat cycles ($N_{\text{rev}} / N_{\text{day}}$), and equatorial swath spacing.
Orbit Altitude & Inclination
Landsat/Sentinel: 705–786 km
Sun-synchronous ~98°
Near-circular frozen orbit ~0.001
Landsat 16 days; Sentinel-2 10 days
Precession & Ground Track Output
Nodal Precession Rate dΩ/dt:
--
deg / solar day
Equatorial Ground Track Spacing:
--
km between adjacent ground tracks
Nodal Period T_N:
--
minutes between ascending nodes
Revolutions per Day Q:
--
orbits / nodal day
| Total Orbits in Repeat Cycle N_rev: | -- |
| Sun-Synchronous Precession Target: | -- |
| Perigee Precession Rate dω/dt: | -- |
| Ground Track Type: | -- |
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