The Dexes / Satellite Decay / 54700
CelestialObjectDex · Satellite Decay
SHIYAN-20B (SY-20B)
54700 · 2026-04-03T14:37:54Z
Fixes
318
Observations
318
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:37:54.655104+00:00 |
|---|---|
| end_utc | 2026-08-09T21:10:44.677056+00:00 |
| family | celestialdex |
| norad_id | 54,700 |
| object_name | SHIYAN-20B (SY-20B) |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 59.997 |
| n_snaps | 318 |
| span_days | 128.273 |
| mean_motion_first | 14.295 |
| mean_motion_last | 14.296 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 793.349 |
| altitude_last_km | 793.215 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.001 |
| 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 | 2026-04-03T14:37:54.655104+00:00 |
| last_utc | 2026-08-09T21:10:44.677056+00:00 |
| last_fix_utc | 2026-08-09T21:10:44.677056+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:37:54.655104+00:00","mean_motion":14.29515928,"altitude_km":793.349,"eccentricity":0.00197596,"inclination_deg":59.9955},{"utc":"2026-04-03T21:20:46.794336+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/54700.json