The Dexes / Satellite Decay / 40420
CelestialObjectDex · Satellite Decay
COSMOS 2503
40420 · 2026-04-03T14:33:56Z
Fixes
217
Observations
217
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:33:56.153088+00:00 |
|---|---|
| end_utc | 2026-08-09T17:26:35.654784+00:00 |
| family | celestialdex |
| norad_id | 40,420 |
| object_name | COSMOS 2503 |
| group | active |
| eccentricity_median | 0.002 |
| inclination_deg_median | 97.831 |
| n_snaps | 217 |
| span_days | 128.120 |
| mean_motion_first | 15.064 |
| mean_motion_last | 15.067 |
| delta_mean_motion | 0.004 |
| altitude_first_km | 547.268 |
| altitude_last_km | 546.188 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.009 |
| 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 | 2026-04-03T14:33:56.153088+00:00 |
| last_utc | 2026-08-09T17:26:35.654784+00:00 |
| last_fix_utc | 2026-08-09T17:26:35.654784+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:33:56.153088+00:00","mean_motion":15.06381682,"altitude_km":547.268,"eccentricity":0.00173578,"inclination_deg":97.8386},{"utc":"2026-04-04T03:19:09.609888+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/40420.json