The Dexes / Satellite Decay / 68647
CelestialObjectDex · Satellite Decay
QIANFAN-120
68647 · 2026-04-16T22:28:01Z
Fixes
144
Observations
144
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-16T22:28:01.039296+00:00 |
|---|---|
| end_utc | 2026-08-09T06:47:21.056640+00:00 |
| family | celestialdex |
| norad_id | 68,647 |
| object_name | QIANFAN-120 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 88.990 |
| n_snaps | 144 |
| span_days | 114.347 |
| mean_motion_first | 14.261 |
| mean_motion_last | 13.510 |
| delta_mean_motion | -0.750 |
| altitude_first_km | 804.888 |
| altitude_last_km | 1068.485 |
| decay_rate_rev_day2 | -0.006 |
| altitude_decay_km_day | 2.222 |
| 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 | 2026-04-16T22:28:01.039296+00:00 |
| last_utc | 2026-08-09T06:47:21.056640+00:00 |
| last_fix_utc | 2026-08-09T06:47:21.056640+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-16T22:28:01.039296+00:00","mean_motion":14.26072891,"altitude_km":804.888,"eccentricity":0.00144037,"inclination_deg":88.9912},{"utc":"2026-04-17T06:53:13.436448+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/68647.json