The Dexes / Satellite Decay / 50572
CelestialObjectDex · Satellite Decay
TIANHUI 4A
50572 · 2026-04-03T15:49:14Z
Fixes
316
Observations
316
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T15:49:14.569824+00:00 |
|---|---|
| end_utc | 2026-08-09T20:35:23.790336+00:00 |
| family | celestialdex |
| norad_id | 50,572 |
| object_name | TIANHUI 4A |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 88.973 |
| n_snaps | 316 |
| span_days | 128.199 |
| mean_motion_first | 15.456 |
| mean_motion_last | 15.472 |
| delta_mean_motion | 0.016 |
| altitude_first_km | 429.757 |
| altitude_last_km | 425.001 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.038 |
| 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 | 2026-04-03T15:49:14.569824+00:00 |
| last_utc | 2026-08-09T20:35:23.790336+00:00 |
| last_fix_utc | 2026-08-09T20:35:23.790336+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T15:49:14.569824+00:00","mean_motion":15.45551862,"altitude_km":429.757,"eccentricity":0.00093114,"inclination_deg":88.9769},{"utc":"2026-04-03T20:28:57.232416+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/50572.json