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MM_CON_EPH_2_
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Conjunction information
Description
This product contains conjunction information for pairs of satellites derived from their respective ephemeris data. Conjunctions between Swarm (A, B, C), CHAMP, GOCE, GRACE (1, 2), and GRACE-FO (1, 2) are included.
Data Access
- Files
- HTTPS (Product files): https://swarm-diss.eo.esa.int/#swarm/Multimission/Combined_Mission_Data/Conjunction
- FTP (Product files): ftp://swarm-diss.eo.esa.int/Multimission/Combined_Mission_Data/Conjunction
- Web services
Output variables
| Field name | Type | Dimension | Unit | Contents |
|---|---|---|---|---|
| crossover_times | CDF_EPOCH | 2 | ms | Crossover times of the satellites (UTC) |
| crossover_time_difference | CDF_REAL8 | 1 | s | Time between the first and second satellite passing over the same location |
| crossover_satellites | CDF_UINT4 | 2 | - | IDs of the satellites, see note 2 |
| crossover_altitudes | CDF_REAL8 | 2 | m | Altitudes of the satellites at crossover (GRS80) |
| crossover_latitude | CDF_REAL8 | 1 | deg | Geodetic latitude of crossover |
| crossover_longitude | CDF_REAL8 | 1 | deg | Longitude of crossover |
| crossover_magnetic_latitude | CDF_REAL8 | 1 | deg | Magnetic latitude of crossover |
| crossover_magnetic_longitude | CDF_REAL8 | 1 | deg | Magnetic longitude of crossover |
| crossover_local_solar_times | CDF_REAL8 | 2 | h | Local solar times of the satellites at crossover |
| plane_alignment_time | CDF_EPOCH | 1 | ms | Time of orbital plane alignment (UTC) |
| plane_alignment_satellites | CDF_UINT4 | 2 | - | IDs of the satellites, see note 2 |
| plane_alignment_ltan | CDF_REAL8 | 2 | h | LTAN of the satellites |
| plane_alignment_altitudes | CDF_REAL8 | 2 | m | Altitudes of the satellites (GRS80) |
| plane_alignment_ltan_rates | CDF_REAL8 | 2 | h/d | LTAN drift rates of the satellites |