The Dexes / Satellite Decay / 42698
CelestialObjectDex · Satellite Decay
INMARSAT 5-F4
42698 · 2026-04-02T23:54:38Z
Fixes
190
Observations
190
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-02T23:54:38.734560+00:00 |
|---|---|
| end_utc | 2026-08-08T22:44:53.897856+00:00 |
| family | celestialdex |
| norad_id | 42,698 |
| object_name | INMARSAT 5-F4 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 0.018 |
| n_snaps | 190 |
| span_days | 127.952 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 35788.715 |
| altitude_last_km | 35786.075 |
| 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 | 2026-04-02T23:54:38.734560+00:00 |
| last_utc | 2026-08-08T22:44:53.897856+00:00 |
| last_fix_utc | 2026-08-08T22:44:53.897856+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-02T23:54:38.734560+00:00","mean_motion":1.00264223,"altitude_km":35788.715,"eccentricity":0.00001233,"inclination_deg":0.0198},{"utc":"2026-04-03T18:13:50.222784+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/42698.json