The Dexes / Satellite Decay / 69850
CelestialObjectDex · Satellite Decay
QIANFAN-221
69850 · 2026-07-14T04:06:39Z
Fixes
51
Sensor hits
0
Observations
51
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-07-14T04:06:39.843072+00:00 |
|---|---|
| end_utc | 2026-08-09T20:01:05.572992+00:00 |
| family | celestialdex |
| norad_id | 69,850 |
| object_name | QIANFAN-221 |
| group | active |
| eccentricity_median | 0.003 |
| inclination_deg_median | 89.006 |
| n_snaps | 51 |
| span_days | 26.663 |
| mean_motion_first | 14.266 |
| mean_motion_last | 14.205 |
| delta_mean_motion | -0.062 |
| altitude_first_km | 802.962 |
| altitude_last_km | 823.694 |
| decay_rate_rev_day2 | -0.001 |
| altitude_decay_km_day | 0.387 |
| 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 | 2026-07-14T04:06:39.843072+00:00 |
| last_utc | 2026-08-09T20:01:05.572992+00:00 |
| last_fix_utc | 2026-08-09T20:01:05.572992+00:00 |
| provisional | false |
| track | [{"utc":"2026-07-14T04:06:39.843072+00:00","mean_motion":14.26646407,"altitude_km":802.962,"eccentricity":0.0030179,"inclination_deg":89.0066},{"utc":"2026-07-14T22:37:40.414368+00:00","mean_motion":1 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/69850.json