Autor:	Floor van Leeuwen, Andrea Dalla Torre
Rok vydání:	2003
Předmět:	Physics Ground track Drag coefficient Geostationary transfer orbit Highly elliptical orbit Astronomy Astronomy and Astrophysics Geodesy Celestial mechanics Specific orbital energy Orbit Space and Planetary Science Physics::Space Physics Satellite Astrophysics::Earth and Planetary Astrophysics
Zdroj:	Space Science Reviews. 108:451-470
ISSN:	0038-6308
DOI:	10.1023/a:1026215716256
Popis:	An analysis of the orbital evolution of the ESA's Hipparcos satellite is presented. Hipparcos operated between August 1989 and March 1993 in a highly elliptical orbit: a geostationary transfer orbit with increased perigee height. The requirements of the scientific mission included high accuracy knowledge of the position and velocity vectors of the spacecraft as a function of time. Through a study of the variations in the total orbital energy, the loss of energy during the mission as a result of non-conservative forces is recovered. These are explained as largely due to atmospheric drag during perigee passages. Apparent variations in the drag coefficient are in agreement with orientation variations of the satellite during those perigee passages. Two different models used for calculating the atmospheric drag give significantly different results, confirming earlier findings by other users of those models.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d5c1118bffcdd579f2f131996b5a7529 https://doi.org/10.1023/a:1026215716256 Zobrazit plný text záznamu Full text from SpringerLink