The Dexes / Satellite Decay / 33278
CelestialObjectDex · Satellite Decay
INMARSAT 4-F3
33278 · 2026-04-03T10:38:59Z
Fixes
246
Observations
246
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T10:38:59.877312+00:00 |
|---|---|
| end_utc | 2026-08-23T08:05:26.775744+00:00 |
| family | celestialdex |
| norad_id | 33,278 |
| object_name | INMARSAT 4-F3 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 4.290 |
| n_snaps | 246 |
| span_days | 141.893 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35786.227 |
| altitude_last_km | 35786.619 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.001 |
| 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 | 2026-04-03T10:38:59.877312+00:00 |
| last_utc | 2026-08-23T08:05:26.775744+00:00 |
| last_fix_utc | 2026-08-23T08:05:26.775744+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T10:38:59.877312+00:00","mean_motion":1.00273097,"altitude_km":35786.227,"eccentricity":0.00027696,"inclination_deg":4.2304},{"utc":"2026-04-04T06:18:24.867648+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/33278.json