Wilbert Smith Archives Files Box 1130 16 1130-16-p027

Document Text (OCR)

On the Luminous Efficiency of Meteors’ Franco VeRNIANI? Introduction By far the most precise astronomical data for meteor orbits have been obtained by use of photographic techniques (Jacchia and Whipple, 1961). Photographic data also make it possible to evaluate physical quantities, including those that cannot be determined by other means of investigation, such as Jacchia’s fragmenta- tion index. Such basic quantities as the masses of meteoroids are, however, still very uncertain, although the...