The Dexes / Satellite Decay / 23839
CelestialObjectDex · Satellite Decay
INMARSAT 3-F1
23839 · 2026-04-03T05:47:38Z
Fixes
161
Observations
161
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T05:47:38.634432+00:00 |
|---|---|
| end_utc | 2026-08-09T16:34:46.398720+00:00 |
| family | celestialdex |
| norad_id | 23,839 |
| object_name | INMARSAT 3-F1 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 10.603 |
| n_snaps | 161 |
| span_days | 128.449 |
| mean_motion_first | 1.000 |
| mean_motion_last | 1.000 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35862.787 |
| altitude_last_km | 35865.847 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.035 |
| 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 | 2026-04-03T05:47:38.634432+00:00 |
| last_utc | 2026-08-09T16:34:46.398720+00:00 |
| last_fix_utc | 2026-08-09T16:34:46.398720+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T05:47:38.634432+00:00","mean_motion":1.00000611,"altitude_km":35862.787,"eccentricity":0.00047663,"inclination_deg":10.4474},{"utc":"2026-04-04T05:11:38.889312+00:00","mean_motion" |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/23839.json