The Dexes / Satellite Decay / 43873
CelestialObjectDex · Satellite Decay
NAVSTAR 77 (USA 289)
43873 · 2026-04-03T11:11:03Z
Fixes
176
Observations
176
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T11:11:03.683040+00:00 |
|---|---|
| end_utc | 2026-08-23T20:11:44.342016+00:00 |
| family | celestialdex |
| norad_id | 43,873 |
| object_name | NAVSTAR 77 (USA 289) |
| group | active |
| eccentricity_median | 0.004 |
| inclination_deg_median | 55.682 |
| n_snaps | 176 |
| span_days | 142.375 |
| mean_motion_first | 2.006 |
| mean_motion_last | 2.006 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 20182.676 |
| altitude_last_km | 20182.119 |
| 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 | 2026-04-03T11:11:03.683040+00:00 |
| last_utc | 2026-08-23T20:11:44.342016+00:00 |
| last_fix_utc | 2026-08-23T20:11:44.342016+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T11:11:03.683040+00:00","mean_motion":2.00558332,"altitude_km":20182.676,"eccentricity":0.00379702,"inclination_deg":55.6359},{"utc":"2026-04-04T11:06:28.893024+00:00","mean_motion" |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/43873.json