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236 years ago. . .

Published online by Cambridge University Press:  01 August 2006

Giovanni B. Valsecchi
Giovanni B. Valsecchi*
Affiliation:
IASF-Roma, INAF, via Fosso del Cavaliere 100, I-00133 Roma (Italy) email: giovanni@iasf-roma.inaf.it
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Abstract

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Some of the problems related to Near Earth Objects (NEOs), like orbit determination and ephemeris computation, are not new, and had to be dealt with since the beginning of NEO astronomy. The latter practically started with the discovery of Comet D/1770 L1 Lexell, that passed very close to the Earth in 1770; studies of the chaotic dynamics of this exceptional object continued well into the XIXth century. At the end of the XXth century there has been a renewal of interest in NEOs, as attested by IAU Symposium 236.

Keywords

orbit determinationmultiple solutionsclose approaches
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S236: Near Earth Objects, our Celestial Neighbors: Opportunity and Risk , August 2006 , pp. xvii - xx
Copyright
Copyright © International Astronomical Union 2007

References

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