Table · dataset · 2026
THEMIS-D Level 1 Probe State Data
Listed in NASA Data Portal
The L1 STATE files contain the following data, sampled at one-minute intervals:
Description
- probe position and velocity in GEI, GSE, and GSM coordinates;
- flags to indicate regions of interest and maneuver status;
- RA and declination of spin axis;
- spin period and spin phase;
- spin model parameters for high-precision interpolation of spin phase between one-minute data points. Version number indicates data source as follows:
- V00: predicted ephemeris and attitude, no spin period or spin phase;
- V01: predicted ephemeris and attitude, spin period and spin phase derived from probe telemetry;
- V02: predicted attitude, definitive ephemeris from magnetometer and Doppler tracking data;
- V03: corrected attitude and spin phase derived from fully calibrated magnetometer data. (added science attitude determination using perigee data post-processing). Produced by Mission Ops, Science Ops and Science Team.
Links
Get the data
- Resource spdf.gsfc.nasa.gov/pub/data/themis/thd/l1/state ↗
download · from data nasa gov
- Resource cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=THD_L1_STATE&index=sp_phys ↗
download · from data nasa gov
- Resource sscweb.gsfc.nasa.gov/cgi-bin/Locator.cgi ↗
download · from data nasa gov
- Resource cdaweb.gsfc.nasa.gov/hapi ↗
download · from data nasa gov
- Resource themis.ssl.berkeley.edu/data/themis/thd/l1/state ↗
download · from data nasa gov
- Resource themis.ssl.berkeley.edu/overview_data.shtml ↗
download · from data nasa gov
- Resource themis.ssl.berkeley.edu/roadrules.shtml ↗
download · from data nasa gov
- PDF spdf.gsfc.nasa.gov/pub/data/themis/documents/tdas/docs/thm_ogs_431m_ephemeris_for… ↗
download · from data nasa gov
- Resource helio.data.nasa.gov/dataset/THEMIS_D_Ephemeris_PT01M ↗
download · from data nasa gov
- Resource hpde.io/NASA/NumericalData/THEMIS/D/Ephemeris/PT01M ↗
download · from data nasa gov
- Resource spdf.gsfc.nasa.gov/pub/data/themis/thd/l1/state ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/themis-d-level-1-probe-state-data-e506b ↗
landing page · from data nasa gov
- DOI doi.org/10.48322/xzx6-3311 ↗
DOI / persistent id · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=12a287d4-9325-40d0-8405-50bf7a7fd… ↗
metadata API · from data nasa gov
Topics
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | 12a287d4-9325-40d0-8405-50bf7a7fdbf0 | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| created_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| description | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /notes |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| title | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /title |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 |