New Methods to Determe Gravity Probe-B Spin Parameters using Graz kHz SLR Data

Using kHz data of the SLR station Graz, spin parameters of the satellite Gravity Probe B (GP-B) are derived; these include spin period and its change over a 1.5 year period, as well as spin direction, and spin axis orientation. The results are compared to the actual data sets as determined by the GP-B mission itself – thus allowing independent confirmation of the kHz SLR derived results.