Analysis of the orbital inclination of 1963-27A

Details Analysis of the orbital inclination of 1963-27A Analysis of the orbital inclination of 1963-27A

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32...63s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 32, Jan. 1984, p. 63-68. Research supported by the Science and Engineering Re

Astronomy and Astrophysics

Astronomy

Astrodynamics, Orbital Elements, Satellite Orbits, Agena B Rocket Vehicle, Atmospheric Circulation, Orbit Perturbation, Precession, Radiation Pressure, Resonance

Scientific paper

The Agena B upper-stage rocket 1963-27A was launched into near-circular orbit, inclined at 82.3 deg to the Equator, on June 29, 1963. Its orbital elements were available at 52 epochs over the 16 month interval prior to its decay on October 26, 1969. During this period the satellite passed through 31:2 resonance and the variation in orbital inclination near this event was analysed to obtain two lumped geopotential harmonics of order 31. Since the resonance was a weak feature in the data, the resulting values are poorly defined. Either side of the resonance period, the inclination was used to estimate the mean atmospheric rotation rate Lambda-rev/day. The values obtained were Lambda = 0.85 (within 0.18) at a height of 440 km for the period June 1968 to February 1969 and Lambda = 1.13 (within 0.10) at 338 km for the period June to October 1969.

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