The Dexes / Satellite Decay / 53139
CelestialObjectDex · Satellite Decay
STARLINK-4185
53139 · 2026-04-03T15:10:43Z
Fixes
197
Observations
197
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T15:10:43.487328+00:00 |
|---|---|
| end_utc | 2026-08-09T20:00:01.999008+00:00 |
| family | celestialdex |
| norad_id | 53,139 |
| object_name | STARLINK-4185 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 53.162 |
| n_snaps | 197 |
| span_days | 128.201 |
| mean_motion_first | 15.089 |
| mean_motion_last | 15.354 |
| delta_mean_motion | 0.265 |
| altitude_first_km | 539.703 |
| altitude_last_km | 459.809 |
| decay_rate_rev_day2 | 0.001 |
| altitude_decay_km_day | -0.355 |
| 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 | 2026-04-03T15:10:43.487328+00:00 |
| last_utc | 2026-08-09T20:00:01.999008+00:00 |
| last_fix_utc | 2026-08-09T20:00:01.999008+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T15:10:43.487328+00:00","mean_motion":15.08853225,"altitude_km":539.703,"eccentricity":0.00017789,"inclination_deg":53.218},{"utc":"2026-04-04T03:53:49.382304+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/53139.json