Orbital anomaly analysis to detect breakups in GEO

Masahiko Uetsuhara, Toshiya Hanada

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This study investigates abrupt orbital changes, i.e. orbital anomalies (OAs), of the very old upper-stages Titan Transtages inserted into the geostationary orbit (GEO) region in 1960s and 1970s to find evidences of breakups. The product of the radiation pressure coefficient (Cr) and the area-to-mass ratio (A/m) are estimated by utilizing eccentricity histories of target objects separated into before-OA phase and after-OA phase. To find evidences of breakups, characteristics of likelihood distributions of CrA/m are compared between before-OAs and after-OAs. The known breakup of the Transtage 1968-081E is utilized as the reference of the comparison study.

Original languageEnglish
Title of host publicationAdvances In The Astronautical Sciences
PublisherUnivelt Inc.
Number of pages9
ISBN (Electronic)9780877036111
Publication statusPublished - 2014
Event24th AAS/AIAA Space Flight Mechanics Meeting, 2014 - Mexico, United States
Duration: Jan 26 2014Jan 30 2014


Other24th AAS/AIAA Space Flight Mechanics Meeting, 2014
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science


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