Analysis of the orbit of 196663A near the 15thorder resonance.
Abstract
Data from U.S. Navy and the RAE orbit refinement program PROP are employed to calculate orbits of the 196663A (OV18) satellite which circled the earth from 19661978. Initial orbit predictions for the OV18 spacecraft, particularly for 15th and higher orbit harmonics were found to be unsatisfactory. Weekly orbit determinations from each of 32 epochs were investigated using the standard deviation of 0.003 deg for inclinations. An analysis performed with the THROE program, which removed perturbations caused by atmospheric rotation and lunisolar precession of the earth's axis, in addition to a later accounting for solar radiation pressure, was determined to be 1% more accurate than previous calculations. Account was taken for eccentricity due to zonal harmonics and atmospheric drag. Resonance was determined to have little effect on eccentricity, and lumped values were found which yielded improved results for the 15th order harmonics.
 Publication:

Journal of the British Interplanetary Society
 Pub Date:
 August 1982
 Bibcode:
 1982JBIS...35..363W
 Keywords:

 Harmonic Analysis;
 Orbit Calculation;
 Orbital Resonances (Celestial Mechanics);
 Ov1 Satellites;
 Resonance;
 Satellite Perturbation;
 Eccentric Orbits;
 Inclination;
 Orbital Elements;
 Zonal Harmonics;
 Astrodynamics;
 Artificial Satellites:Orbits