The Dexes / Satellite Decay / 61747
CelestialObjectDex · Satellite Decay
POLYTECH UNIVERSE-4
61747 · 2026-04-03T14:19:27Z
Fixes
290
Observations
290
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:19:27.818400+00:00 |
|---|---|
| end_utc | 2026-08-09T19:41:18.951072+00:00 |
| family | celestialdex |
| norad_id | 61,747 |
| object_name | POLYTECH UNIVERSE-4 |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 97.301 |
| n_snaps | 290 |
| span_days | 128.224 |
| mean_motion_first | 15.430 |
| mean_motion_last | 15.474 |
| delta_mean_motion | 0.044 |
| altitude_first_km | 437.306 |
| altitude_last_km | 424.372 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.102 |
| 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 | 2026-04-03T14:19:27.818400+00:00 |
| last_utc | 2026-08-09T19:41:18.951072+00:00 |
| last_fix_utc | 2026-08-09T19:41:18.951072+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:19:27.818400+00:00","mean_motion":15.42984651,"altitude_km":437.306,"eccentricity":0.00094943,"inclination_deg":97.3112},{"utc":"2026-04-03T20:33:00.490752+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/61747.json