The Dexes / Satellite Decay / 28474
CelestialObjectDex · Satellite Decay
NAVSTAR 56 (USA 180)
28474 · 2026-04-02T05:58:20Z
Fixes
134
Sensor hits
0
Observations
134
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-02T05:58:20.451648+00:00 |
|---|---|
| end_utc | 2026-08-09T13:50:00.000096+00:00 |
| family | celestialdex |
| norad_id | 28,474 |
| object_name | NAVSTAR 56 (USA 180) |
| group | active |
| eccentricity_median | 0.017 |
| inclination_deg_median | 55.137 |
| n_snaps | 134 |
| span_days | 129.328 |
| mean_motion_first | 2.006 |
| mean_motion_last | 2.006 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 20181.213 |
| altitude_last_km | 20182.679 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.003 |
| 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 | 2026-04-02T05:58:20.451648+00:00 |
| last_utc | 2026-08-09T13:50:00.000096+00:00 |
| last_fix_utc | 2026-08-09T13:50:00.000096+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-02T05:58:20.451648+00:00","mean_motion":2.00574902,"altitude_km":20181.213,"eccentricity":0.01703876,"inclination_deg":55.1786},{"utc":"2026-04-03T18:10:57.998208+00:00","mean_motion" |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/28474.json