The Dexes / Satellite Decay / 64881
CelestialObjectDex · Satellite Decay
239ALFEROV (RS61S)
64881 · 2026-04-03T14:57:25Z
Fixes
293
Observations
293
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:57:25.784640+00:00 |
|---|---|
| end_utc | 2026-08-09T20:26:01.197600+00:00 |
| family | celestialdex |
| norad_id | 64,881 |
| object_name | 239ALFEROV (RS61S) |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 97.455 |
| n_snaps | 293 |
| span_days | 128.228 |
| mean_motion_first | 15.309 |
| mean_motion_last | 15.343 |
| delta_mean_motion | 0.035 |
| altitude_first_km | 473.240 |
| altitude_last_km | 462.900 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.080 |
| 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 | 2026-04-03T14:57:25.784640+00:00 |
| last_utc | 2026-08-09T20:26:01.197600+00:00 |
| last_fix_utc | 2026-08-09T20:26:01.197600+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:57:25.784640+00:00","mean_motion":15.3086163,"altitude_km":473.24,"eccentricity":0.00098843,"inclination_deg":97.4505},{"utc":"2026-04-03T21:13:55.742016+00:00","mean_motion":15 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/64881.json