Showing papers by "Royal Institute and Observatory of the Spanish Navy published in 1997"
TL;DR: In this paper, the Artificial Satellite Theory (AST) was applied to the Earth case, where a zonal gravitational model for the potential was considered and sixteen polar orbits were found to be periodic after different number of revolutions.
Abstract: We compute periodic orbits in the Artificial Satellite Theory. We fix our attention on the Earth case where we considered a zonal gravitational model for the potential. In a rotating frame attached to the Earth we have found sixteen polar orbits that are periodic after different number of revolutions. The altitude of each orbit remains almost constant and varies from about 263 km for the sixteen-revolutions orbit to about 35,830 km for the one-revolution orbit. All the orbits are linearly stable and their period is exactly 24 hours.
12 citations