Accession Number:

AD0621394

Title:

RADAR DETERMINATION OF THE ASTRONOMICAL UNIT,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

Report Date:

1963-01-01

Pagination or Media Count:

41.0

Abstract:

A comprehensive review is given of the Earth-Venus measurements made with the Lincoln Laboratory Millstone radar in 1959 and 1961. The time-delay and Doppler shift data yield a value for the Astronomical Unit of 499.0052 0.001 light sec. Using 299 792.5 kms for the speed of light leads to an AU of 149 598 000 300 km. With the radius of Earth taken as 6 378.15 km, the solar parallax then becomes 8 min.79416 0 min.00002. This value is consistent with measurements made at various other laboratories to about one part in 100,000. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE