The Dexes / Satellite Decay / 28117
CelestialObjectDex · Satellite Decay
UFO 11 (USA 174)
28117 · 2026-04-03T09:45:48Z
Fixes
168
Observations
168
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T09:45:48.235392+00:00 |
|---|---|
| end_utc | 2026-08-09T20:55:22.420992+00:00 |
| family | celestialdex |
| norad_id | 28,117 |
| object_name | UFO 11 (USA 174) |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 8.941 |
| n_snaps | 168 |
| span_days | 128.465 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35786.473 |
| altitude_last_km | 35786.584 |
| 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 | 2026-04-03T09:45:48.235392+00:00 |
| last_utc | 2026-08-09T20:55:22.420992+00:00 |
| last_fix_utc | 2026-08-09T20:55:22.420992+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T09:45:48.235392+00:00","mean_motion":1.00272219,"altitude_km":35786.473,"eccentricity":0.00030347,"inclination_deg":8.8955},{"utc":"2026-04-03T20:01:58.258848+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/28117.json