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Planetary Geodesy
Sveučilište u ZagrebuGeodetski fakultetKolegij: Engleski jezik u funkciji strukeStudent: Natalija ŠagudDatum: 09.01.2012.
Determination and study of properties of any planetary body
- size - shape - rotation - gravity field
History
17th century – Galileo Galilei – first drawings of the Moon
18th century – Tobias Mayer – first control network of a planetary body (Moon)
Planetary mapping
Differences versus Earth Mapping tool: areal film camera or spacecraft
television systems
Science goals of planetary geodesy
Definition of reference systems Definition of rotation parameters (also precession
and libration)
Precession- change in the orientation of the rotation axis of a rotating body
Libration- an oscillating motion of orbiting bodies relative to each other
Lunar libration
Science goals of planetary geodesy
Establishment of: - planetary geodetic control point networks - global and local three-dimensional surface representations creation of geocoded image data and maps
Control points on other planetary bodies
Centers of craters as defined by their rims Analytical photogrammetry (for computing the
latitude and longitude of the control points)
Conclusion
Development of innovative cartographic techniques
Contribution to understanding of planetary objects Prime role in Solar System exploration
Questions
Who published first drawings of the Moon? When was established the first control network of a
planetary body? How do we call a change in the orientation of the
axis of a rotation body? Which libration is most common and best known? What is most common way to define a control point
on other planetary bodies?
Sources:1. R. Greeley, R.M. Batson: Planetary mapping2. http://www.dlr.de/pf/en/