The Dexes / Satellite Decay / 39122
CelestialObjectDex · Satellite Decay
EUTELSAT 117 WEST A
39122 · 2026-04-02T22:34:56Z
Fixes
237
Observations
237
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-02T22:34:56.733888+00:00 |
|---|---|
| end_utc | 2026-08-09T15:01:59.257056+00:00 |
| family | celestialdex |
| norad_id | 39,122 |
| object_name | EUTELSAT 117 WEST A |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 0.026 |
| n_snaps | 237 |
| span_days | 128.685 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35786.165 |
| altitude_last_km | 35786.889 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.001 |
| 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 | 2026-04-02T22:34:56.733888+00:00 |
| last_utc | 2026-08-09T15:01:59.257056+00:00 |
| last_fix_utc | 2026-08-09T15:01:59.257056+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-02T22:34:56.733888+00:00","mean_motion":1.00273319,"altitude_km":35786.165,"eccentricity":0.00030322,"inclination_deg":0.0489},{"utc":"2026-04-04T05:23:07.008288+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/39122.json