The Dexes / Satellite Decay / 39453
CelestialObjectDex · Satellite Decay
SWARM C
39453 · 2026-04-03T14:15:49Z
Fixes
323
Observations
323
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:15:49.857120+00:00 |
|---|---|
| end_utc | 2026-08-23T20:21:14.068800+00:00 |
| family | celestialdex |
| norad_id | 39,453 |
| object_name | SWARM C |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 87.331 |
| n_snaps | 323 |
| span_days | 142.254 |
| mean_motion_first | 15.494 |
| mean_motion_last | 15.504 |
| delta_mean_motion | 0.010 |
| altitude_first_km | 418.533 |
| altitude_last_km | 415.652 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.021 |
| 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 | 2026-04-03T14:15:49.857120+00:00 |
| last_utc | 2026-08-23T20:21:14.068800+00:00 |
| last_fix_utc | 2026-08-23T20:21:14.068800+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:15:49.857120+00:00","mean_motion":15.4938208,"altitude_km":418.533,"eccentricity":0.00035145,"inclination_deg":87.3284},{"utc":"2026-04-03T20:27:51.210720+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/39453.json