The Dexes / Satellite Decay / 39256
CelestialObjectDex · Satellite Decay
AEHF-3 (USA 246)
39256 · 2026-04-03T15:18:27Z
Fixes
220
Observations
220
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T15:18:27.965952+00:00 |
|---|---|
| end_utc | 2026-08-09T16:42:23.168736+00:00 |
| family | celestialdex |
| norad_id | 39,256 |
| object_name | AEHF-3 (USA 246) |
| group | active |
| eccentricity_median | 0.009 |
| inclination_deg_median | 5.266 |
| n_snaps | 220 |
| span_days | 128.058 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35786.666 |
| altitude_last_km | 35787.448 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.002 |
| 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 | 2026-04-03T15:18:27.965952+00:00 |
| last_utc | 2026-08-09T16:42:23.168736+00:00 |
| last_fix_utc | 2026-08-09T16:42:23.168736+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T15:18:27.965952+00:00","mean_motion":1.0027153,"altitude_km":35786.666,"eccentricity":0.00898834,"inclination_deg":5.1103},{"utc":"2026-04-04T01:55:26.927328+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/39256.json