FINDING

Finding 1: Orbital debris travels in a variety of orbits and is affected by various perturbation forces, including the effects of the Earth's atmosphere, gravitational perturbation effects, and solar radiation pressure. As orbital altitude increases, the effect of the atmosphere in accelerating orbital decay becomes small, and typical large objects in orbits higher than approximately 600 km can remain in orbit for tens, hundreds, or even thousands of years.

REFERENCES

Adams, J.H., L.P. Beahm, and A.J. Tylka. 1991. Preliminary results from the heavy ions in space experiment. P. 377 in NASA Conference Publication 3134, LDEF—69 Months in Space: Proceedings of the First Post-Retrieval Symposium, Kissimmee, Florida, June 2–8. A.S. Levine, ed. Hampton, Virginia: NASA Langley Research Center.


See, T., M. Allbrooks, D. Atkinson, C. Simon, and M. Zolensky. 1990. Meteoroid and Debris. Impact Features Documented on the Long Duration Exposure Facility: A Preliminary Report. NASA JSC #24608. Houston, Texas: NASA Johnson Space Center.

Siebold, K.H., M.J. Matney, G.W. Ojakangas, and B.J. Anderson. 1993. Risk analysis of 1-2 cm debris population for solid rocket motors and mitigation possibilities for geotransfer orbits. Pp. 349–351 in Proceedings of the First European Conference on Space Debris, Darmstadt, Germany, April 5–7. Darmstadt: European Space Operations Center.


U.S. Space Command. 1994. U.S. Space Command Satellite Catalog. Cheyenne Mountain Air Force Base, Colorado: U.S. Space Command.


Whitaker, A.F., and L.E. Young. 1991. An overview of the first results on the Solar Array Materials Passive LDEF Experiment (SAMPLE), A0171. P. 1241 in NASA Conference Publication 3134, LDEF-69 Months in Space: Proceedings of the First Post-Retrieval Symposium, Kissimmee, Florida, June 2–8. A.S. Levine, ed. Hampton, Virginia: NASA Langley Research Center.



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