22 Years of AJISAI spin period determination from standard SLR and kHz SLR data

Details 22 Years of AJISAI spin period determination from standard SLR and kHz SLR data 22 Years of AJISAI spin period determination from standard SLR and kHz SLR data

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009adspr..44..621k&link_type=abstract

Advances in Space Research, Volume 44, Issue 5, p. 621-626.

Physics

4

Scientific paper

Satellite Laser Ranging (SLR) is a powerful and efficient technique to measure spin parameters of satellites equipped with corner cube reflectors. We obtained spin period determination of the satellite AJISAI from SLR data only: 17246 pass-by-pass estimates from standard 1-15 Hz SLR data (14/Aug/1986-30/Dec/2008) and 1444 pass-by-pass estimates (9/Oct/2003-30/Dec/2008) from data of the first 2 kHz SLR system from Graz, Austria. A continuous history of the slowing down of AJISAI spin is derived from frequency analysis, and corrected for the apparent effects. The apparent corrections, elaborated here, allowed very accurate determination of AJISAI initial spin period: 1.4855 ± 0.0007 [s]. The paper identifies also non-gravitational effects as a source of the periodical changes in the rate of slowing down of the satellite.

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