The Dexes / Satellite Decay / 39210
CelestialObjectDex · Satellite Decay
SHIJIAN-15 (SJ-15)
39210 · 2026-04-03T15:12:18Z
Fixes
318
Observations
318
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T15:12:18.905760+00:00 |
|---|---|
| end_utc | 2026-08-09T21:07:34.964256+00:00 |
| family | celestialdex |
| norad_id | 39,210 |
| object_name | SHIJIAN-15 (SJ-15) |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 98.105 |
| n_snaps | 318 |
| span_days | 128.247 |
| mean_motion_first | 14.714 |
| mean_motion_last | 14.716 |
| delta_mean_motion | 0.002 |
| altitude_first_km | 656.584 |
| altitude_last_km | 656.083 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.004 |
| 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 | 2026-04-03T15:12:18.905760+00:00 |
| last_utc | 2026-08-09T21:07:34.964256+00:00 |
| last_fix_utc | 2026-08-09T21:07:34.964256+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T15:12:18.905760+00:00","mean_motion":14.7140589,"altitude_km":656.584,"eccentricity":0.00069176,"inclination_deg":98.1057},{"utc":"2026-04-03T21:44:00.727008+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/39210.json