The Dexes / Satellite Decay / 42989
CelestialObjectDex · Satellite Decay
SKYSAT-C9
42989 · 2026-04-03T08:25:16Z
Fixes
216
Observations
216
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T08:25:16.512384+00:00 |
|---|---|
| end_utc | 2026-08-09T09:07:31.541952+00:00 |
| family | celestialdex |
| norad_id | 42,989 |
| object_name | SKYSAT-C9 |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 97.440 |
| n_snaps | 216 |
| span_days | 128.029 |
| mean_motion_first | 15.397 |
| mean_motion_last | 15.428 |
| delta_mean_motion | 0.030 |
| altitude_first_km | 446.946 |
| altitude_last_km | 437.979 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.071 |
| 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 | 2026-04-03T08:25:16.512384+00:00 |
| last_utc | 2026-08-09T09:07:31.541952+00:00 |
| last_fix_utc | 2026-08-09T09:07:31.541952+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T08:25:16.512384+00:00","mean_motion":15.39716917,"altitude_km":446.946,"eccentricity":0.00094623,"inclination_deg":97.4311},{"utc":"2026-04-03T20:53:56.692320+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/42989.json