The Dexes / Satellite Decay / 54209
CelestialObjectDex · Satellite Decay
STARLINK-5259
54209 · 2026-04-03T16:02:19Z
Fixes
199
Observations
199
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T16:02:19.441248+00:00 |
|---|---|
| end_utc | 2026-08-09T20:00:01.999008+00:00 |
| family | celestialdex |
| norad_id | 54,209 |
| object_name | STARLINK-5259 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 53.178 |
| n_snaps | 199 |
| span_days | 128.165 |
| mean_motion_first | 15.089 |
| mean_motion_last | 15.272 |
| delta_mean_motion | 0.184 |
| altitude_first_km | 539.700 |
| altitude_last_km | 484.055 |
| decay_rate_rev_day2 | 0.001 |
| altitude_decay_km_day | -0.181 |
| 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 | 2026-04-03T16:02:19.441248+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":"2026-04-03T16:02:19.441248+00:00","mean_motion":15.08854167,"altitude_km":539.7,"eccentricity":0.00013615,"inclination_deg":53.2161},{"utc":"2026-04-03T19:13:05.580192+00:00","mean_motion":15 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/54209.json