The Dexes / Satellite Decay / 47851
CelestialObjectDex · Satellite Decay
SHIYAN-9 (SY-9)
47851 · 2026-04-03T11:25:48Z
Fixes
134
Observations
134
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T11:25:48.641952+00:00 |
|---|---|
| end_utc | 2026-08-23T12:10:20.804736+00:00 |
| family | celestialdex |
| norad_id | 47,851 |
| object_name | SHIYAN-9 (SY-9) |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 16.534 |
| n_snaps | 134 |
| span_days | 142.031 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 35786.807 |
| altitude_last_km | 35785.450 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.010 |
| 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 | 2026-04-03T11:25:48.641952+00:00 |
| last_utc | 2026-08-23T12:10:20.804736+00:00 |
| last_fix_utc | 2026-08-23T12:10:20.804736+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T11:25:48.641952+00:00","mean_motion":1.00271027,"altitude_km":35786.807,"eccentricity":0.00154943,"inclination_deg":16.6907},{"utc":"2026-04-03T22:04:49.684800+00:00","mean_motion" |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/47851.json