Other
Scientific paper
Jun 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978m%26p....18..479b&link_type=abstract
Moon and the Planets, vol. 18, June 1978, p. 479-490.
Other
1
Asteroids, Impact Damage, Lunar Maria, Lunar Orbits, Lunar Craters, Lunar Surface, Meteorite Craters, Parabolas
Scientific paper
A computer investigation is presented which extends to the case of parabolic orbits in terms of impacts by external low eccentricity satellites as a means to interpret the asymmetric distribution of lunar maria. Parabolic orbits can be approximated by two kinds of objects: (1) high eccentricity external satellites may, near periapsis, approach the moon with orbital velocity and other characteristics closely resembling those of a parabolic orbit. (2) Asteroids and meteoroids approaching the earth-moon system with a low velocity may have moved in a nearly parabolic orbit when they reached the lunar distance from the earth at the time when the impacts which carved the lunar maria took place. The investigation gives not only additional information relevant to the interpretation of the distribution of lunar maria by the satellite impacts hypothesis (in this case high eccentricity ones), but also information about the alternative hypothesis (Wood, 1973) that asteroid impacts rather than satellite impacts were involved.
Barricelli Nils Aall
Thorbjornsen R.
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