The Dexes / Satellite Decay / 48808
CelestialObjectDex · Satellite Decay
FENGYUN 4B
48808 · 2026-04-01T20:28:21Z
Fixes
252
Sensor hits
0
Observations
252
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-01T20:28:21.843840+00:00 |
|---|---|
| end_utc | 2026-08-09T21:52:40.976832+00:00 |
| family | celestialdex |
| norad_id | 48,808 |
| object_name | FENGYUN 4B |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 0.108 |
| n_snaps | 252 |
| span_days | 130.059 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 35788.063 |
| altitude_last_km | 35787.996 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.000 |
| 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 | 2026-04-01T20:28:21.843840+00:00 |
| last_utc | 2026-08-09T21:52:40.976832+00:00 |
| last_fix_utc | 2026-08-09T21:52:40.976832+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-01T20:28:21.843840+00:00","mean_motion":1.0026655,"altitude_km":35788.063,"eccentricity":0.0006091,"inclination_deg":0.0576},{"utc":"2026-04-04T09:51:41.251104+00:00","mean_motion":1. |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/48808.json