Berry, Arthur,b. 1862 · London, J. Murray · leaf 450
uncertain. The first direct measurements $ 294] The Minor Planets 379 of any of the discs which seem reliable are those ofProfessor E. E. Barnard, made at the Lick Observatoryin 1894 and 1895 ; according to these the three largestminor planets, Ceres, Pallas, and Vesta, have diametersof nearly 500… … Fig. 90.—Comparative sizes of three minor planets and the moon. of the minor planets—is to measure the amount of light re-ceived, and hence to deduce the size, on the assumption thatthe reflective power is the same as that of some known planet.This method gives diameters of about 300 miles for…
Astronomy
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
