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Dr Alessandro Rossi

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Alessandro Rossi is working in the field of astrodynamics and space debris since the early 90's. Alessndro Rossi is an expert in the modeling of the long term evolution of space debris and mitigation strategies, impact risk assessment, optical observation and orbit determination of space objects. Alessandro Rossi developed the first European models for the long term evolution of the space debris population since the early 90s. He is one of the developers of the long term evolution model SDM. Author of more than 50 papers on international Journal with referees and more than 60 papers in conference proceedings. Since 1999 is a member of the Inter Agency Debris Coordination Committee (IADC) and from 2004 to 2006 served as Chairman of IADC Working Group 2 on modelling. The asteroid 1990 RV2 was renamed (5185) Alerossi in recognition of his contributions in asteroids and debris studies.


Dynamics of space debris and simulation of long term evolution of space debris population
The lecture will first focus on the dynamics of the space debris population in the different orbital regimes, from Low Earth Orbit to the  Geostationary region, with some details of a few peculiar cases such as, e.g., the Medium Earth Orbit resonances. Then a short overview of the models for the long term evolutions of the overall population of Earth orbiting debris will be given, with particular emphasis on the models developed in the last decades by our group. Some recent results on the future evolution of the debris population will be finally shown.

Relevant publications:
Milani, A., Farnocchia, D., Dimare, L., Rossi, A., Bernardi, F., "Innovative observing strategy and orbit determination for Low Earth Orbit space debris", Planetary and Space Science, 62, 10-22 (2012).
Milani A., Tommei G., Farnocchia D., Rossi A., Schildknecht T., Jehn R., "Orbit determination of space objects based on sparse optical data", Monthly Notices of the Royal Astronomical Society, 417, 2094-2103 (2011).
Deleflie F., Rossi A., Portmann C., Metris G., Barlier F., "Semi-analytical investigations of the long term evolution of the eccentricity of Galileo and GPS-like orbits", Advances in Space Research, 47, 811 - 821 (2011).
Farnocchia D., Tommei G., Milani A., Rossi A., "Innovative methods of correlation and orbit determination for space debris", Celestial Mechanics & Dynamical Astronomy, 107, 169- 185 (2010).
Rossi, A., "Resonant dynamics of Medium Earth Orbits: space debris issues", Celestial mechanics and Dynamical Astronomy, 100,267-286 (2008).
Tommei G., Milani A. and Rossi A., "Orbit Determination of Space Debris: Admissible Regions", Celestial Mech. Dyn. Astr., 97:289- 304 (2007).
Valsecchi G.B. and A. Rossi, "Analysis of the space debris impact risk on the International Space Station", Celestial Mechanics and Dynamical Astronomy,  83, 63 -- 76 (2002).
Rossi A., G.B. Valsecchi and P. Farinella, "Risk of collision for constellation satellites", Nature, 399, pp. 743--744 (1999).
Rossi, A., L. Anselmo, C. Pardini, R. Jehn, "The new Space Debris Mitigation (SDM 4.0) long term evolution code", Proceedings of the Fifth European Conference on Space Debris, Darmstadt, Germany, 30 March- 2 April 2009, CD-ROM SP-672 (2009).

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