The Dexes / Satellite Decay / 42957
CelestialObjectDex · Satellite Decay
IRIDIUM 122
42957 · 2026-04-03T14:53:10Z
Fixes
234
Observations
234
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:53:10.628160+00:00 |
|---|---|
| end_utc | 2026-08-09T20:30:54.636192+00:00 |
| family | celestialdex |
| norad_id | 42,957 |
| object_name | IRIDIUM 122 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 86.397 |
| n_snaps | 234 |
| span_days | 128.235 |
| mean_motion_first | 14.342 |
| mean_motion_last | 14.342 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 777.669 |
| altitude_last_km | 777.665 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0 |
| 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 | 2026-04-03T14:53:10.628160+00:00 |
| last_utc | 2026-08-09T20:30:54.636192+00:00 |
| last_fix_utc | 2026-08-09T20:30:54.636192+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:53:10.628160+00:00","mean_motion":14.3421716,"altitude_km":777.669,"eccentricity":0.00021754,"inclination_deg":86.3956},{"utc":"2026-04-03T19:54:34.622496+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/42957.json