The Dexes / Satellite Decay / 66309
CelestialObjectDex · Satellite Decay
TOMORROW-S9
66309 · 2026-04-03T11:33:45Z
Fixes
183
Observations
183
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T11:33:45.297792+00:00 |
|---|---|
| end_utc | 2026-08-23T01:44:46.974624+00:00 |
| family | celestialdex |
| norad_id | 66,309 |
| object_name | TOMORROW-S9 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 45.404 |
| n_snaps | 183 |
| span_days | 141.591 |
| mean_motion_first | 15.196 |
| mean_motion_last | 15.210 |
| delta_mean_motion | 0.014 |
| altitude_first_km | 507.107 |
| altitude_last_km | 502.809 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.028 |
| 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 | 2026-04-03T11:33:45.297792+00:00 |
| last_utc | 2026-08-23T01:44:46.974624+00:00 |
| last_fix_utc | 2026-08-23T01:44:46.974624+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T11:33:45.297792+00:00","mean_motion":15.19580585,"altitude_km":507.107,"eccentricity":0.00039635,"inclination_deg":45.4043},{"utc":"2026-04-04T04:55:04.396800+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/66309.json