The plane of symmetry of interplanetary dust in the inner solar system

Details The plane of symmetry of interplanetary dust in the inner solar system The plane of symmetry of interplanetary dust in the inner solar system

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....82..328l&link_type=abstract

Astronomy and Astrophysics, vol. 82, no. 3, Feb. 1980, p. 328-336. Research supported by the Bundesministerium für Forschung un

Astronomy and Astrophysics

Astronomy

22

Interplanetary Dust, Solar System, Spatial Distribution, Symmetry, Zodiacal Light, Asymmetry, Helios 1, Helios 2, Orbital Elements, Pitch (Inclination), Satellite Observation, Satellite Orbits, Solar Probes, Spaceborne Astronomy

Scientific paper

Observations of the zodiacal light from the space probes Helios 1 and 2 between 1.0 and 0.3 AU show - superimposed on the general radial dependence - a systematic variation of brightness and brightness distribution with position in the orbit which is caused by the inclination of the symmetry plane of interplanetary dust with respect to the ecliptic. By suitable choice of the observing geometry, the inclination and the ascending node of the symmetry plane can be determined directly from the data without recourse to model calculations. The resulting values of i equals 3.0 plus or minus 0.3 deg, Omega equals 87 plus or minus 4 deg are not compatible with a concentration of interplanetary dust to the invariable plane of the solar system. The data support the simple view that the distribution of interplanetary dust in the inner solar system is characterized throughout by one plane of symmetry and suggest that this plane extends to at least 1 AU.

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