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1978•Journal of Geophysical Research AtmospheresRequires access

The control net of Mars: May 1977

Merton E. Davies

Open publisher page 10 citations

Abstract

In May 1977 a planet‐wide control net of Mars was computed by means of a large single‐block analytical triangulation using 17,224 measurements of 3037 control points on 928 Mariner 9 pictures. Areographic coordinates of the control points are available on microfiche (see Table 2). The direction of the spin axis and the rotation rate as determined by Viking were used. The angle V, measured from Mars' vernal equinox along the equator to the prime meridian (Airy‐0), was found to be V = 148.37° + 350.891986° (J.D. 2,433,282.5).

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What this paper is about

In May 1977 a planet‐wide control net of Mars was computed by means of a large single‐block analytical triangulation using 17,224 measurements of 3037 control points on 928 Mariner 9 pictures. Areographic coordinates of the control points are available on microfiche (see Table 2). The direction of the spin axis and the rotation rate as determined by Viking were used. The angle V, measured from Mars' vernal equinox along the equator to the prime meridian (Airy‐0), was found to be V = 148.37° + 350.891986° (J.D. 2,433,282.5).

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Available abstract

In May 1977 a planet‐wide control net of Mars was computed by means of a large single‐block analytical triangulation using 17,224 measurements of 3037 control points on 928 Mariner 9 pictures. Areographic coordinates of the control points are available on microfiche (see Table 2). The direction of the spin axis and the rotation rate as determined by Viking were used. The angle V, measured from Mars' vernal equinox along the equator to the prime meridian (Airy‐0), was found to be V = 148.37° + 350.891986° (J.D. 2,433,282.5).

Key concepts: Mars Exploration Program, Equinox, Equator, Geodesy, Geology, Planet, Net (polyhedron), Exploration of Mars

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