The Dexes / Satellite Decay / 69858
CelestialObjectDex · Satellite Decay
QIANFAN-229
69858 · 2026-07-13T23:03:07Z
Fixes
52
Sensor hits
0
Observations
52
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-07-13T23:03:07.854912+00:00 |
|---|---|
| end_utc | 2026-08-09T19:25:19.694208+00:00 |
| family | celestialdex |
| norad_id | 69,858 |
| object_name | QIANFAN-229 |
| group | active |
| eccentricity_median | 0.003 |
| inclination_deg_median | 89.005 |
| n_snaps | 52 |
| span_days | 26.849 |
| mean_motion_first | 14.267 |
| mean_motion_last | 14.070 |
| delta_mean_motion | -0.197 |
| altitude_first_km | 802.670 |
| altitude_last_km | 869.711 |
| decay_rate_rev_day2 | -0.008 |
| altitude_decay_km_day | 2.561 |
| 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 | 2026-07-13T23:03:07.854912+00:00 |
| last_utc | 2026-08-09T19:25:19.694208+00:00 |
| last_fix_utc | 2026-08-09T19:25:19.694208+00:00 |
| provisional | false |
| track | [{"utc":"2026-07-13T23:03:07.854912+00:00","mean_motion":14.26733671,"altitude_km":802.67,"eccentricity":0.0030214,"inclination_deg":89.0068},{"utc":"2026-07-15T01:57:31.328640+00:00","mean_motion":14 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/69858.json