Relative estimate of accuracy in orbit determination from a short tracklet

Vananti, Alessandro; Schildknecht, Thomas (2015). Relative estimate of accuracy in orbit determination from a short tracklet (Unpublished). In: Proceedings of workshop on Key Topics in Orbit Propagation Applied to Space Situational Awareness (KEPASSA). Toulouse, France.

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The Astronomical Institute of the University of Bern (AIUB) is conducting several search campaigns for orbital debris. The debris objects are discovered during systematic survey observations. In general only a short observation arc, or tracklet, is available for most of these objects. From this discovery tracklet a first orbit determination is computed in order to be able to find the object again in subsequent follow-up observations. The additional observations are used in the orbit improvement process to obtain accurate orbits to be included in a catalogue. In this paper, the accuracy of the initial orbit determination is analyzed. This depends on a number of factors: tracklet length, number of observations, type of orbit, astrometric error, and observation geometry. The latter is characterized by both the position of the object along its orbit and the location of the observing station. Different positions involve different distances from the target object and a different observing angle with respect to its orbital plane and trajectory. The present analysis aims at optimizing the geometry of the discovery observation is depending on the considered orbit.

Item Type:

Conference or Workshop Item (Paper)


08 Faculty of Science > Institute of Astronomy

UniBE Contributor:

Vananti, Alessandro and Schildknecht, Thomas


500 Science > 520 Astronomy




Alessandro Vananti

Date Deposited:

14 Dec 2015 16:48

Last Modified:

09 Dec 2016 12:16




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