CLASSIFICATION OF GEOSYNCHRONOUS OBJECTS -- ISSUE 9

EUROPEAN SPACE AGENCY
EUROPEAN SPACE OPERATIONS CENTRE
GROUND SYSTEMS ENGINEERING DEPARTMENT
Mission Analysis Office

CLASSIFICATION OF GEOSYNCHRONOUS OBJECTS
ISSUE 9
by J.P. Arregui and R. Jehn
Produced with the DISCOS Database

February 2007
ESOC Robert-Bosch-Str. 5, 64293 Darmstadt, Germany

Contents

Introduction

List of geosynchronous objects

Table 1: objects with recently updated orbital elements

Table 2: objects without TLEs during the last 6 months

Table 3: objects of indeterminate status

Figures

Summary

References

Acknowledgements

List of Figures

Longitude history of the objects librating around the two stable points

Longitude history of the objects of indeterminate status

Number of objects in each category

Number of objects in each category according to the launch year

Distribution of the longitude of the 309 satellites under control (with updated TLEs)

Distribution and altitude range of the objects in drift orbit

Zoom in the distribution and altitude range of the objects in drift orbit

Distribution of the perigee mean deviation from the geostationary altitude

Distribution of the objects in libration orbit in 5-deg bins of geographic longitude (objects with updated TLEs only)