The Dexes / Satellite Decay / 38745
CelestialObjectDex · Satellite Decay
EXPRESS-MD2
38745 · 2026-04-03T14:51:22Z
Fixes
181
Observations
181
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:51:22.260960+00:00 |
|---|---|
| end_utc | 2026-08-09T07:57:49.025088+00:00 |
| family | celestialdex |
| norad_id | 38,745 |
| object_name | EXPRESS-MD2 |
| group | active |
| eccentricity_median | 0.158 |
| inclination_deg_median | 49.825 |
| n_snaps | 181 |
| span_days | 127.713 |
| mean_motion_first | 12.384 |
| mean_motion_last | 12.466 |
| delta_mean_motion | 0.082 |
| altitude_first_km | 1513.516 |
| altitude_last_km | 1478.698 |
| decay_rate_rev_day2 | 0.001 |
| altitude_decay_km_day | -0.282 |
| decay_note | mean_motion slope (rev/day^2) and altitude slope (km/day) from least-squares fit of measured GP elements; altitude from Kepler a=(GM/n^2)^(1/3) - R_earth |
| first_utc | 2026-04-03T14:51:22.260960+00:00 |
| last_utc | 2026-08-09T07:57:49.025088+00:00 |
| last_fix_utc | 2026-08-09T07:57:49.025088+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:51:22.260960+00:00","mean_motion":12.38371092,"altitude_km":1513.516,"eccentricity":0.15907026,"inclination_deg":49.831},{"utc":"2026-04-03T18:43:49.775808+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/38745.json