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Asteroidal source of meteorites.

P D Zimmerman, G W Wetherill

    Science (New York, N.Y.)
    |October 5, 1973
    PubMed
    Summary
    This summary is machine-generated.

    Asteroid orbital evolution near Jupiter

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    Area of Science:

    • Planetary Science
    • Astronomy
    • Astrophysics

    Background:

    • The Kirkwood Gap is a region in the asteroid belt with a 1:2 orbital resonance with Jupiter.
    • Understanding asteroid dynamics is crucial for meteorite origin studies.

    Purpose of the Study:

    • To investigate the mechanism of meteorite production from the asteroid belt.
    • To analyze the orbital evolution of asteroids near Jupiter's 1:2 resonance.

    Main Methods:

    • Simulating asteroidal orbital evolution.
    • Analyzing orbital elements of Earth-crossing objects.

    Main Results:

    • Asteroid orbital evolution near the 1:2 resonance provides a viable meteorite production mechanism.
    • The calculated meteorite yield (approximately 10^9 g/year) aligns with observational data.
    • Orbital elements of resulting Earth-crossing objects match meteorite observations.

    Conclusions:

    • The 1:2 resonance with Jupiter is a key factor in asteroid belt-to-Earth meteorite transport.
    • This mechanism explains both the quantity and orbital characteristics of meteorites.