Istituto di Scienza e Tecnologie dell'Informazione     
Anselmo L., Pardini C. Evolution of the debris cloud generated by the Fengyun-1C fragmentation event. In: 25th IADC Plenary Meeting (Pierre Baudis Convention Centre, Toulouse, France, July 3-6 2007).
Around 22:26 UTC of January 11, 2007, the 880 kg weather spacecraft Fengyun-1C, launched in 1999 into a sun-synchronous orbit with a mean altitude of 871 km and an inclination of 98.6 deg, was destroyed over central China as a result of the first successful Chinese anti-satellite weapon test, carried out with a direct ascent interception from the Xichang Launch Center. While the technical details of the test and the characteristics of the weapon used remain shrouded in secrecy, the intentional breakup of the aging weather spacecraft in polar orbit produced a huge amount of debris in one of the orbital regimes already most affected by past fragmentation events. At present, the US Space Surveillance Network has cataloged about 1800 objects, typically larger than 10 cm, but the final tally might exceed 2200, even disregarding centimeter sized objects, many thousands of which have been probably generated as well. The purpose of this paper is to analyze the evolution of the debris cloud generated by the Fengyun-1C breakup and assess its impact on the circumterrestrial environment during the next 15 years. The cataloged debris for which a reasonable orbit and ballistic parameter were available (about 1800 at the time of writing) have been propagated with a numerical code, taking into account the most important perturbations: the earth gravity field harmonics, up to the 16th order and degree, air drag, luni-solar third body attraction and solar radiation pressure with eclipses. To estimate the effects of air drag, the Jacchia-Roberts 1971 density model was adopted, together with the NASA Marshall Space Center 50% percentile prediction for the 10.7 cm solar flux proxy and the planetary geomagnetic index (available until February 2022).
Subject Orbital Debris
Debris Cloud Evolution
Impact Risk
J.2 Physical Sciences and Engineering
70M20 Orbital mechanics

Icona documento 1) Download Document PDF

Icona documento Open access Icona documento Restricted Icona documento Private


Per ulteriori informazioni, contattare: Librarian http://puma.isti.cnr.it

Valid HTML 4.0 Transitional