The Dexes / Satellite Decay / 43272
CelestialObjectDex · Satellite Decay
HYLAS 4
43272 · 2026-04-01T22:53:38Z
Fixes
203
Sensor hits
0
Observations
203
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-01T22:53:38.798592+00:00 |
|---|---|
| end_utc | 2026-08-09T17:08:20.679936+00:00 |
| family | celestialdex |
| norad_id | 43,272 |
| object_name | HYLAS 4 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 0.035 |
| n_snaps | 203 |
| span_days | 129.760 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 35787.178 |
| altitude_last_km | 35786.738 |
| 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 | 2026-04-01T22:53:38.798592+00:00 |
| last_utc | 2026-08-09T17:08:20.679936+00:00 |
| last_fix_utc | 2026-08-09T17:08:20.679936+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-01T22:53:38.798592+00:00","mean_motion":1.00269706,"altitude_km":35787.178,"eccentricity":0.00016816,"inclination_deg":0.0349},{"utc":"2026-04-03T19:30:46.250784+00:00","mean_motion": |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/43272.json