The Dexes / Satellite Decay / 39469
CelestialObjectDex · Satellite Decay
SMDC ONE 2.4
39469 · 2026-04-03T14:49:44Z
Fixes
197
Observations
197
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:49:44.062176+00:00 |
|---|---|
| end_utc | 2026-08-09T20:25:43.802688+00:00 |
| family | celestialdex |
| norad_id | 39,469 |
| object_name | SMDC ONE 2.4 |
| group | active |
| eccentricity_median | 0.014 |
| inclination_deg_median | 120.490 |
| n_snaps | 197 |
| span_days | 128.233 |
| mean_motion_first | 15.166 |
| mean_motion_last | 15.196 |
| delta_mean_motion | 0.030 |
| altitude_first_km | 515.976 |
| altitude_last_km | 506.974 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.065 |
| 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 | 2026-04-03T14:49:44.062176+00:00 |
| last_utc | 2026-08-09T20:25:43.802688+00:00 |
| last_fix_utc | 2026-08-09T20:25:43.802688+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:49:44.062176+00:00","mean_motion":15.16649167,"altitude_km":515.976,"eccentricity":0.01362775,"inclination_deg":120.4904},{"utc":"2026-04-03T21:09:26.568000+00:00","mean_motion" |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/39469.json