Variations of the Local Time of Ascending Node for the Initial

Details Variations of the Local Time of Ascending Node for the Initial Variations of the Local Time of Ascending Node for the Initial

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jass...16..167l&link_type=abstract

Journal of Astronomy and Space Sciences, vol. 16, no. 2, p. 167-176.

Astronomy and Astrophysics

Astronomy

Scientific paper

The optimal initial inclination for minimizing the variation of the Local Time of Ascending Node(LTAN) during the three year mission of the KOMPSAT is investigated. At first, the analytical equation for the inclination change by the Sun is derived and the optimal initial inclination by analytical method is derived. Then the analytically derived optimal inclination is checked by the numerical orbit propagation with including all major perturbations. Four different cases of the initial orbital elements are used for monitoring the LTAN variation of the LTAN. Therefore, a new optimal initial inclination by numerical orbit propagation for the KOMPSAT is found. In addition, the variations of the mean and osculating semi-major axis are investigated with the different atmospheric density values. The mean eccentricity vs. argument of perigee diagram for the frozen orbit is obtained.

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