The Dexes / Satellite Decay / 53721
CelestialObjectDex · Satellite Decay
STARLINK-4707
53721 · 2026-04-03T10:45:44Z
Fixes
234
Observations
234
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T10:45:44.348544+00:00 |
|---|---|
| end_utc | 2026-08-23T22:32:58.238880+00:00 |
| family | celestialdex |
| norad_id | 53,721 |
| object_name | STARLINK-4707 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 53.161 |
| n_snaps | 234 |
| span_days | 142.491 |
| mean_motion_first | 15.088 |
| mean_motion_last | 15.347 |
| delta_mean_motion | 0.259 |
| altitude_first_km | 539.731 |
| altitude_last_km | 461.712 |
| decay_rate_rev_day2 | 0.002 |
| altitude_decay_km_day | -0.696 |
| 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 | 2026-04-03T10:45:44.348544+00:00 |
| last_utc | 2026-08-23T22:32:58.238880+00:00 |
| last_fix_utc | 2026-08-23T22:32:58.238880+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T10:45:44.348544+00:00","mean_motion":15.08844092,"altitude_km":539.731,"eccentricity":0.0001434,"inclination_deg":53.2166},{"utc":"2026-04-04T12:11:55.475808+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/53721.json