The Dexes / Satellite Decay / 55263
CelestialObjectDex · Satellite Decay
USA 342
55263 · 2026-04-02T06:08:09Z
Fixes
182
Sensor hits
0
Observations
182
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-02T06:08:09.432672+00:00 |
|---|---|
| end_utc | 2026-08-06T05:34:47.180064+00:00 |
| family | celestialdex |
| norad_id | 55,263 |
| object_name | USA 342 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 0.005 |
| n_snaps | 182 |
| span_days | 125.977 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 35786.918 |
| altitude_last_km | 35786.696 |
| 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 | 2026-04-02T06:08:09.432672+00:00 |
| last_utc | 2026-08-06T05:34:47.180064+00:00 |
| last_fix_utc | 2026-08-06T05:34:47.180064+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-02T06:08:09.432672+00:00","mean_motion":1.00270632,"altitude_km":35786.918,"eccentricity":0.0000126,"inclination_deg":0.0114},{"utc":"2026-04-14T18:30:40.968000+00:00","mean_motion":1 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/55263.json