The Dexes / Satellite Decay / 55131
CelestialObjectDex · Satellite Decay
SHIJIAN-23 (SJ-23)
55131 · 2026-04-03T17:42:03Z
Fixes
126
Observations
126
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T17:42:03.288384+00:00 |
|---|---|
| end_utc | 2026-08-09T16:45:31.106880+00:00 |
| family | celestialdex |
| norad_id | 55,131 |
| object_name | SHIJIAN-23 (SJ-23) |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 3.707 |
| n_snaps | 126 |
| span_days | 127.961 |
| mean_motion_first | 1.005 |
| mean_motion_last | 1.000 |
| delta_mean_motion | -0.004 |
| altitude_first_km | 35728.854 |
| altitude_last_km | 35851.319 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 1.000 |
| 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 | 2026-04-03T17:42:03.288384+00:00 |
| last_utc | 2026-08-09T16:45:31.106880+00:00 |
| last_fix_utc | 2026-08-09T16:45:31.106880+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T17:42:03.288384+00:00","mean_motion":1.00478109,"altitude_km":35728.854,"eccentricity":0.0005735,"inclination_deg":3.5266},{"utc":"2026-04-05T16:53:57.312384+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/55131.json