THEMIS-B Level 1 Probe State Data
Description
The L1 STATE files contain the following data, sampled at one-minute intervals:\n\n * probe position and velocity in GEI, GSE, and GSM coordinates;\n * flags to indicate regions of interest and maneuver status;\n * RA and declination of spin axis;\n * spin period and spin phase;\n * spin model parameters for high-precision interpolation of spin phase between one-minute data points.\n\n Version number indicates data source as follows:\n\n * V00: predicted ephemeris and attitude, no spin period or spin phase;\n * V01: predicted ephemeris and attitude, spin period and spin phase derived from probe telemetry;\n * V02: predicted attitude, definitive ephemeris from magnetometer and Doppler tracking data;\n * V03: corrected attitude and spin phase derived from fully calibrated magnetometer data. (added science attitude determination using perigee data post-processing).\n\n Produced by Mission Ops, Science Ops and Science Team.
Resources
| Name |
Format |
Description |
Link |
|
5 |
|
http://themis.ssl.berkeley.edu/overview_data.shtml |
|
5 |
|
http://themis.ssl.berkeley.edu/roadrules.shtml |
|
33 |
thm_ogs_431m_ephemeris_format_definition.pdf |
https://spdf.gsfc.nasa.gov/pub/data/themis/documents/tdas/docs/thm_ogs_431m_ephemeris_format_definition.pdf |