The Dexes / Satellite Decay / 28361
CelestialObjectDex · Satellite Decay
NAVSTAR 55 (USA 178)
28361 · 2026-04-03T08:20:56Z
Fixes
132
Observations
132
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T08:20:56.374080+00:00 |
|---|---|
| end_utc | 2026-08-08T18:03:40.978368+00:00 |
| family | celestialdex |
| norad_id | 28,361 |
| object_name | NAVSTAR 55 (USA 178) |
| group | active |
| eccentricity_median | 0.016 |
| inclination_deg_median | 54.872 |
| n_snaps | 132 |
| span_days | 127.405 |
| mean_motion_first | 2.006 |
| mean_motion_last | 2.006 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 20183.110 |
| altitude_last_km | 20182.595 |
| 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 | 2026-04-03T08:20:56.374080+00:00 |
| last_utc | 2026-08-08T18:03:40.978368+00:00 |
| last_fix_utc | 2026-08-08T18:03:40.978368+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T08:20:56.374080+00:00","mean_motion":2.00553422,"altitude_km":20183.11,"eccentricity":0.01602644,"inclination_deg":54.8127},{"utc":"2026-04-04T08:18:27.690912+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/28361.json