The Dexes / Satellite Decay / 28220
CelestialObjectDex · Satellite Decay
SHIYAN-1 (SY-1)
28220 · 2026-04-03T15:08:50Z
Fixes
219
Observations
219
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T15:08:50.358624+00:00 |
|---|---|
| end_utc | 2026-08-09T18:55:40.541088+00:00 |
| family | celestialdex |
| norad_id | 28,220 |
| object_name | SHIYAN-1 (SY-1) |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 97.869 |
| n_snaps | 219 |
| span_days | 128.158 |
| mean_motion_first | 15.319 |
| mean_motion_last | 15.350 |
| delta_mean_motion | 0.032 |
| altitude_first_km | 470.267 |
| altitude_last_km | 460.776 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.075 |
| 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 | 2026-04-03T15:08:50.358624+00:00 |
| last_utc | 2026-08-09T18:55:40.541088+00:00 |
| last_fix_utc | 2026-08-09T18:55:40.541088+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T15:08:50.358624+00:00","mean_motion":15.31858737,"altitude_km":470.267,"eccentricity":0.00044662,"inclination_deg":97.8729},{"utc":"2026-04-03T18:16:57.963936+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/28220.json