The Dexes / Satellite Decay / 8820
CelestialObjectDex · Satellite Decay
LAGEOS 1
8820 · 2026-04-03T09:24:41Z
Fixes
192
Observations
192
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T09:24:41.725440+00:00 |
|---|---|
| end_utc | 2026-08-09T09:19:44.377248+00:00 |
| family | celestialdex |
| norad_id | 8,820 |
| object_name | LAGEOS 1 |
| group | active |
| eccentricity_median | 0.004 |
| inclination_deg_median | 109.805 |
| n_snaps | 192 |
| span_days | 127.997 |
| mean_motion_first | 6.387 |
| mean_motion_last | 6.387 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 5893.048 |
| altitude_last_km | 5893.050 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.000 |
| 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 | 2026-04-03T09:24:41.725440+00:00 |
| last_utc | 2026-08-09T09:19:44.377248+00:00 |
| last_fix_utc | 2026-08-09T09:19:44.377248+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T09:24:41.725440+00:00","mean_motion":6.38664831,"altitude_km":5893.048,"eccentricity":0.00446735,"inclination_deg":109.8111},{"utc":"2026-04-04T20:50:32.832384+00:00","mean_motion" |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/8820.json