The Dexes / Satellite Decay / 44910
CelestialObjectDex · Satellite Decay
SHIJIAN-20 (SJ-20)
44910 · 2026-04-03T11:22:48Z
Fixes
220
Observations
220
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T11:22:48.175680+00:00 |
|---|---|
| end_utc | 2026-08-22T06:08:38.704128+00:00 |
| family | celestialdex |
| norad_id | 44,910 |
| object_name | SHIJIAN-20 (SJ-20) |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 4.927 |
| n_snaps | 220 |
| span_days | 140.782 |
| mean_motion_first | 1.001 |
| mean_motion_last | 1.003 |
| delta_mean_motion | 0.002 |
| altitude_first_km | 35838.412 |
| altitude_last_km | 35785.375 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.098 |
| 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 | 2026-04-03T11:22:48.175680+00:00 |
| last_utc | 2026-08-22T06:08:38.704128+00:00 |
| last_fix_utc | 2026-08-22T06:08:38.704128+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T11:22:48.175680+00:00","mean_motion":1.00087229,"altitude_km":35838.412,"eccentricity":0.0002853,"inclination_deg":4.7273},{"utc":"2026-04-04T18:50:20.453280+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/44910.json