The Dexes / Satellite Decay / 28190
CelestialObjectDex · Satellite Decay
NAVSTAR 54 (USA 177)
28190 · 2026-04-03T08:14:52Z
Fixes
104
Observations
104
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T08:14:52.746720+00:00 |
|---|---|
| end_utc | 2026-08-09T20:07:08.255136+00:00 |
| family | celestialdex |
| norad_id | 28,190 |
| object_name | NAVSTAR 54 (USA 177) |
| group | active |
| eccentricity_median | 0.012 |
| inclination_deg_median | 54.827 |
| n_snaps | 104 |
| span_days | 128.495 |
| mean_motion_first | 2.006 |
| mean_motion_last | 2.006 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 20182.777 |
| altitude_last_km | 20183.172 |
| 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 | 2026-04-03T08:14:52.746720+00:00 |
| last_utc | 2026-08-09T20:07:08.255136+00:00 |
| last_fix_utc | 2026-08-09T20:07:08.255136+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T08:14:52.746720+00:00","mean_motion":2.00557195,"altitude_km":20182.777,"eccentricity":0.01124448,"inclination_deg":54.8926},{"utc":"2026-04-06T08:15:54.510624+00:00","mean_motion" |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/28190.json