Orbit determination for Nozomi

Takafumi Ohnishi, Shiro Ishibashi, Makoto Yoshikawa, Takaji Kato, Tsutomu Ichikawa, Hiroshi Yamakawa, Jun'ichiro Kawaguchi

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


Nozomi is the first Japanese spacecraft to explore the planet Mars. It was launched in July, 1998, and put into interplanetary trajectory by multiple lunar gravity assists and a powered Earth swing-by. This paper describes the analysis of orbit determination in each phase of Nozomi trajectory. Non-conservative force which is caused by solar radiation pressure and unexpected small maneuvers at reorientations has a significant influence on orbit determination for Nozomi. We improved the modeling of the non-conservative force. The accuracy of orbit determination is 1km in position and 1 cm/s in velocity in well determined period for cislunar orbit.

Original languageEnglish
Pages (from-to)55-65
Number of pages11
JournalAdvances in the Astronautical Sciences
Volume108 I
Publication statusPublished - 2001
Externally publishedYes
EventProceedings of the AAS/AIAA Space Flight Mechanics Meeting - Santa Barbara, CA, United States
Duration: 2001 Feb 112001 Feb 15

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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