The Dexes / Satellite Decay / 40016
CelestialObjectDex · Satellite Decay
SAUDISAT 4
40016 · 2026-04-03T15:44:02Z
Fixes
226
Observations
226
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T15:44:02.790240+00:00 |
|---|---|
| end_utc | 2026-08-09T09:50:07.507104+00:00 |
| family | celestialdex |
| norad_id | 40,016 |
| object_name | SAUDISAT 4 |
| group | active |
| eccentricity_median | 0.004 |
| inclination_deg_median | 97.755 |
| n_snaps | 226 |
| span_days | 127.754 |
| mean_motion_first | 14.794 |
| mean_motion_last | 14.796 |
| delta_mean_motion | 0.002 |
| altitude_first_km | 631.102 |
| altitude_last_km | 630.587 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.004 |
| 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 | 2026-04-03T15:44:02.790240+00:00 |
| last_utc | 2026-08-09T09:50:07.507104+00:00 |
| last_fix_utc | 2026-08-09T09:50:07.507104+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T15:44:02.790240+00:00","mean_motion":14.79436861,"altitude_km":631.102,"eccentricity":0.00438602,"inclination_deg":97.7464},{"utc":"2026-04-03T20:36:13.588704+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/40016.json