The Dexes / Satellite Decay / 28187
CelestialObjectDex · Satellite Decay
EUTELSAT 139 WEST A
28187 · 2026-03-30T02:47:36Z
Fixes
18
Sensor hits
0
Observations
18
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-03-30T02:47:36.981600+00:00 |
|---|---|
| end_utc | 2026-04-23T04:43:40.202112+00:00 |
| family | celestialdex |
| norad_id | 28,187 |
| object_name | EUTELSAT 139 WEST A |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 5.680 |
| n_snaps | 18 |
| span_days | 24.081 |
| mean_motion_first | 1.008 |
| mean_motion_last | 0.988 |
| delta_mean_motion | -0.020 |
| altitude_first_km | 35629.831 |
| altitude_last_km | 36202.338 |
| decay_rate_rev_day2 | -0.001 |
| altitude_decay_km_day | 27.391 |
| 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 | 2026-03-30T02:47:36.981600+00:00 |
| last_utc | 2026-04-23T04:43:40.202112+00:00 |
| last_fix_utc | 2026-04-23T04:43:40.202112+00:00 |
| provisional | false |
| track | [{"utc":"2026-03-30T02:47:36.981600+00:00","mean_motion":1.00833594,"altitude_km":35629.831,"eccentricity":0.00035708,"inclination_deg":5.6289},{"utc":"2026-04-04T18:21:14.542560+00:00","mean_motion": |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/28187.json