The Dexes / Satellite Decay / 40018
CelestialObjectDex · Satellite Decay
APRIZESAT 9
40018 · 2026-04-03T08:10:35Z
Fixes
224
Observations
224
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T08:10:35.656608+00:00 |
|---|---|
| end_utc | 2026-08-09T19:50:33.042048+00:00 |
| family | celestialdex |
| norad_id | 40,018 |
| object_name | APRIZESAT 9 |
| group | active |
| eccentricity_median | 0.007 |
| inclination_deg_median | 97.903 |
| n_snaps | 224 |
| span_days | 128.486 |
| mean_motion_first | 14.741 |
| mean_motion_last | 14.743 |
| delta_mean_motion | 0.002 |
| altitude_first_km | 647.921 |
| altitude_last_km | 647.441 |
| 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 | 2026-04-03T08:10:35.656608+00:00 |
| last_utc | 2026-08-09T19:50:33.042048+00:00 |
| last_fix_utc | 2026-08-09T19:50:33.042048+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T08:10:35.656608+00:00","mean_motion":14.74128051,"altitude_km":647.921,"eccentricity":0.00675764,"inclination_deg":97.8931},{"utc":"2026-04-03T19:34:48.085248+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/40018.json