The Dexes / Satellite Decay / 40021
CelestialObjectDex · Satellite Decay
DUCHIFAT-1
40021 · 2026-04-03T14:19:13Z
Fixes
185
Observations
185
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:19:13.252224+00:00 |
|---|---|
| end_utc | 2026-08-09T15:36:55.988064+00:00 |
| family | celestialdex |
| norad_id | 40,021 |
| object_name | DUCHIFAT-1 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 98.049 |
| n_snaps | 185 |
| span_days | 128.054 |
| mean_motion_first | 15.532 |
| mean_motion_last | 15.792 |
| delta_mean_motion | 0.260 |
| altitude_first_km | 407.285 |
| altitude_last_km | 332.589 |
| decay_rate_rev_day2 | 0.002 |
| altitude_decay_km_day | -0.555 |
| 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 | 2026-04-03T14:19:13.252224+00:00 |
| last_utc | 2026-08-09T15:36:55.988064+00:00 |
| last_fix_utc | 2026-08-09T15:36:55.988064+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:19:13.252224+00:00","mean_motion":15.53236115,"altitude_km":407.285,"eccentricity":0.00032106,"inclination_deg":98.0568},{"utc":"2026-04-04T04:14:06.579456+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/40021.json