The Summer Daytime Meteor streams of 1949 and 1950: III. Computation of the Orbits

Abstract

The orbital elements of four daytime meteor streams have been computed from the observational data given in Parts I and II. The orbits are found to be of short period and to lie within the orbit of Jupiter. The origin of these meteor streams is discussed. Two are of low inclination and are shown to be associated with well-known visual streams produced by the passage of the Earth through the orbit before perihelion. The main stream of the daytime sequence is shown to have a probable association with the visual δ-Aquarid stream. One of the orbits appears to be coincident with that of Encke's comet, but there are no prominent objects which can be associated with the others.