The Dexes / Satellite Decay / 57172
CelestialObjectDex · Satellite Decay
UMKA 1 (RS40S)
57172 · 2026-04-03T14:12:04Z
Fixes
330
Observations
330
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:12:04.348800+00:00 |
|---|---|
| end_utc | 2026-08-23T21:56:12.199776+00:00 |
| family | celestialdex |
| norad_id | 57,172 |
| object_name | UMKA 1 (RS40S) |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 97.505 |
| n_snaps | 330 |
| span_days | 142.322 |
| mean_motion_first | 15.200 |
| mean_motion_last | 15.215 |
| delta_mean_motion | 0.015 |
| altitude_first_km | 505.895 |
| altitude_last_km | 501.392 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.033 |
| 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 | 2026-04-03T14:12:04.348800+00:00 |
| last_utc | 2026-08-23T21:56:12.199776+00:00 |
| last_fix_utc | 2026-08-23T21:56:12.199776+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:12:04.348800+00:00","mean_motion":15.19982128,"altitude_km":505.895,"eccentricity":0.00133632,"inclination_deg":97.5122},{"utc":"2026-04-03T20:31:15.879360+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/57172.json