Accession Number:

ADA109329

Title:

Longitude Determination by Two Different Stars Observed at the Same Altitude East and West of the Meridian

Descriptive Note:

Corporate Author:

ARMY ENGINEER TOPOGRAPHIC LABS FORT BELVOIR VA

Personal Author(s):

Report Date:

1981-03-14

Pagination or Media Count:

14.0

Abstract:

The determination of time by east and west observation of the zenith distance of a star near the prime vertical shows discrepancies as much as 2 seconds of time. A new method with higher accuracy has been developed. It is based on observation of an individual pair of stars. The observation of each star one east, the other west of the meridian consists of determining the instant of time at which it crosses a fixed preselected unknown zenith in order to determine the circumstances when greatest accuracy can be expected. Author

Subject Categories:

  • Astronomy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE