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Orbital Elements of Micrometeoroids Detected by the Helios 1 Space Probe in the Inner Solar System

Published online by Cambridge University Press:  14 August 2015

K. D. Schmidt  and
E. Grün
K. D. Schmidt
Affiliation:
Ruhr-Universität Bochum, Bereich Extraterrestrische Physik
E. Grün
Affiliation:
Max-Planck-Institut für Kernphysik, Heidelberg, Germany

Extract

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The Helios Spacecraft is able to detect micrometeoroids along its orbit in the inner Solar System between 0.3 AU and 1 AU distance from the sun (Grün et al. 1977, Grün et al. 1979). Data of the first 6 orbits are presented here. 168 particles have been identified in such a way that their osculating orbital elements (here especially semimajor axis a, eccentricity e and inclination i) can be calculated. Detailed information on impact speed is available only up to about 50 km s−1 which corresponds to a lower mass limit of 10−11g (Dietzel et al. 1973). So the detected micrometeoroids are divided into two groups below and above 10−11g for each sensor. Table 1 gives the absolute number of dust particles in the different mass intervals.

Type
III: The Interplanetary Dust Complex 1. Sources, Evolution, and Dynamics
Information
Symposium - International Astronomical Union , Volume 90: Solid Particles in the Solar System , 1980 , pp. 321 - 324
Copyright
Copyright © Reidel 1980 

References

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