The Dexes / Satellite Decay / 50321
CelestialObjectDex · Satellite Decay
SHIYAN-12 01 (SY-12 01)
50321 · 2026-04-03T17:05:11Z
Fixes
124
Observations
124
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T17:05:11.604768+00:00 |
|---|---|
| end_utc | 2026-08-09T15:40:03.108000+00:00 |
| family | celestialdex |
| norad_id | 50,321 |
| object_name | SHIYAN-12 01 (SY-12 01) |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 3.664 |
| n_snaps | 124 |
| span_days | 127.941 |
| mean_motion_first | 1.001 |
| mean_motion_last | 1.000 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35840.208 |
| altitude_last_km | 35849.496 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.049 |
| 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 | 2026-04-03T17:05:11.604768+00:00 |
| last_utc | 2026-08-09T15:40:03.108000+00:00 |
| last_fix_utc | 2026-08-09T15:40:03.108000+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T17:05:11.604768+00:00","mean_motion":1.00080844,"altitude_km":35840.208,"eccentricity":0.000341,"inclination_deg":3.4828},{"utc":"2026-04-05T17:37:54.865920+00:00","mean_motion":1. |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/50321.json