Physics
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.290..384h&link_type=abstract
Nature, vol. 290, Apr. 2, 1981, p. 384-386.
Physics
3
Earth Atmosphere, Fragmentation, Meteorite Collisions, Perseid Meteoroids, Interplanetary Dust, Lunar Dust, Time Dependence, Meteorites, Fragmentation, Meteors, Perseid Meteoroid, Characteristics, Parent Bodies, Magnitudes, Collisions, Dust, Particles, Observations, Parameters, Data, Procedure, Trajectories, Brightness, Velocity, Distance, Mass, Flux, Ejecta, Cosmic Dust, Swift-Tuttle Comet
Scientific paper
Three Perseid meteoroids assumed to be fragments of a larger body were observed on near parallel trajectories on August 12, 1977 between 0305.21 and 0305.23 UT. The mass of the parent body is estimated at 0.0003 kg with a radius of approximately 6 mm (assuming the parent body was roughly spherical and had a typical Perseid density of 290 kg/cu m). An upper limit to the distance of breakup point from the earth's surface can be placed between 0.004 and 0.04 AU. The probabilities of collision and breakup of the parent Perseid with three classes of dust particle (interplanetary, magnetospheric, and lunar ejecta) in near earth space at the time of the observation are given.
Hapgood M. A.
Rothwell Pamela
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