POSITION AND VELOCITY DETERMINATION WITHIN THE SOLAR SYSTEM FROM MEASUREMENT OF ANGLES BETWEEN CELESTIAL BODIES
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1961
- Accession Number
- AD0261168
Entities
People
- H.e. Stubbs
- T.c. Degges