Accession Number:

AD0261168

Title:

POSITION AND VELOCITY DETERMINATION WITHIN THE SOLAR SYSTEM FROM MEASUREMENT OF ANGLES BETWEEN CELESTIAL BODIES

Descriptive Note:

Corporate Author:

GEOPHYSICS CORP OF AMERICA BOSTON MASS

Personal Author(s):

Report Date:

1961-07-01

Pagination or Media Count:

1.0

Abstract:

Measurement of small angles between near bodies planets or asteroids and stars is used to determine position. Each determination requires observation of two such near bodies and four stars, two stars located at small angular distances from each near body being used. The osculating elements of an orbit are determined from two position measurements, using the planned trajectory as a first approximation. Instantaneous position and velocity are computed. Required accuracy of measurement for Venus and Mars flight is discussed assuming small impulsive midcourse corrections to the trajectory. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE