The Dexes / Satellite Decay / 40887
CelestialObjectDex · Satellite Decay
MUOS-4
40887 · 2026-04-03T11:28:25Z
Fixes
283
Observations
283
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T11:28:25.138272+00:00 |
|---|---|
| end_utc | 2026-08-23T21:50:00.259872+00:00 |
| family | celestialdex |
| norad_id | 40,887 |
| object_name | MUOS-4 |
| group | active |
| eccentricity_median | 0.006 |
| inclination_deg_median | 4.324 |
| n_snaps | 283 |
| span_days | 142.432 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 35786.492 |
| altitude_last_km | 35786.410 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.001 |
| 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 | 2026-04-03T11:28:25.138272+00:00 |
| last_utc | 2026-08-23T21:50:00.259872+00:00 |
| last_fix_utc | 2026-08-23T21:50:00.259872+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T11:28:25.138272+00:00","mean_motion":1.00272154,"altitude_km":35786.492,"eccentricity":0.00597334,"inclination_deg":4.1908},{"utc":"2026-04-03T18:19:12.207936+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/40887.json