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Determination of Azimuth Angle at Burnout for Placing a Satellite Over a Selected Earth PositionExpressions are presented for relating the satellite position in the orbital plane with the projected latitude and longitude on a rotating earth surface. An expression is also presented for determining the azimuth angle at a given burnout position on the basis of a selected passage position on the earth's surface. Examples are presented of a satellite launched eastward and one launched westward, each passing over a selected position sometime after having completed three orbits. Incremental changes from the desired latitude and longitude due to the earth's oblateness are included in the iteration for obtaining the azimuth angles of the two examples. The results for both cases are then compared with those obtained from a computing program using an oblate rotating earth. Changes from the selected latitude and longitude resulting from incremental changes from the burn-out azimuth angle and latitude are also analyzed.
Document ID
19980227091
Document Type
Other - NASA Technical Note (TN)
Authors
Skopinski, T. H.
(NASA Langley Research Center Hampton, VA United States)
Johnson, Katherine G.
(NASA Langley Research Center Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1960
Subject Category
Astrodynamics
Report/Patent Number
NASA-TN-D-233
L-289
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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