The Dexes / Satellite Decay / 69857
CelestialObjectDex · Satellite Decay
QIANFAN-228
69857 · 2026-07-14T17:34:08Z
Fixes
45
Sensor hits
0
Observations
45
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-07-14T17:34:08.739840+00:00 |
|---|---|
| end_utc | 2026-08-09T20:14:54.091968+00:00 |
| family | celestialdex |
| norad_id | 69,857 |
| object_name | QIANFAN-228 |
| group | active |
| eccentricity_median | 0.003 |
| inclination_deg_median | 89.006 |
| n_snaps | 45 |
| span_days | 26.112 |
| mean_motion_first | 14.267 |
| mean_motion_last | 14.033 |
| delta_mean_motion | -0.234 |
| altitude_first_km | 802.838 |
| altitude_last_km | 882.398 |
| decay_rate_rev_day2 | -0.008 |
| altitude_decay_km_day | 2.680 |
| 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 | 2026-07-14T17:34:08.739840+00:00 |
| last_utc | 2026-08-09T20:14:54.091968+00:00 |
| last_fix_utc | 2026-08-09T20:14:54.091968+00:00 |
| provisional | false |
| track | [{"utc":"2026-07-14T17:34:08.739840+00:00","mean_motion":14.26683603,"altitude_km":802.838,"eccentricity":0.00303467,"inclination_deg":89.007},{"utc":"2026-07-15T03:40:08.100192+00:00","mean_motion":1 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/69857.json