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Hipparcos result - typical duration between first and last observations
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- Title Hipparcos result - typical duration between first and last observations
- Released 08/02/2002 10:51 am
- Copyright ESA-SP 1200 (Volume 1) - Hypparcos and Tycho catalogues
- Description
The typical duration between the first and last observations of each star, in ecliptic coordinates. The features are a direct consequence of the scanning law, the missin duration, and the observation interruptions.Status : April 1997.