The Dexes / Satellite Decay / 49125
CelestialObjectDex · Satellite Decay
CHINASAT 9B
49125 · 2026-03-31T13:25:58Z
Fixes
237
Sensor hits
0
Observations
237
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-03-31T13:25:58.132704+00:00 |
|---|---|
| end_utc | 2026-08-09T21:12:05.200992+00:00 |
| family | celestialdex |
| norad_id | 49,125 |
| object_name | CHINASAT 9B |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 0.020 |
| n_snaps | 237 |
| span_days | 131.324 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35786.567 |
| altitude_last_km | 35787.242 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.001 |
| 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 | 2026-03-31T13:25:58.132704+00:00 |
| last_utc | 2026-08-09T21:12:05.200992+00:00 |
| last_fix_utc | 2026-08-09T21:12:05.200992+00:00 |
| provisional | false |
| track | [{"utc":"2026-03-31T13:25:58.132704+00:00","mean_motion":1.00271884,"altitude_km":35786.567,"eccentricity":0.00020639,"inclination_deg":0.0144},{"utc":"2026-04-04T14:58:46.108992+00:00","mean_motion": |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/49125.json