The Dexes / Satellite Decay / 42741
CelestialObjectDex · Satellite Decay
EUTELSAT 172B
42741 · 2026-04-03T10:13:23Z
Fixes
237
Observations
237
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T10:13:23.089152+00:00 |
|---|---|
| end_utc | 2026-08-09T18:06:57.535776+00:00 |
| family | celestialdex |
| norad_id | 42,741 |
| object_name | EUTELSAT 172B |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 0.024 |
| n_snaps | 237 |
| span_days | 128.329 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35786.301 |
| altitude_last_km | 35787.044 |
| 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 | 2026-04-03T10:13:23.089152+00:00 |
| last_utc | 2026-08-09T18:06:57.535776+00:00 |
| last_fix_utc | 2026-08-09T18:06:57.535776+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T10:13:23.089152+00:00","mean_motion":1.00272835,"altitude_km":35786.301,"eccentricity":0.00000801,"inclination_deg":0.0232},{"utc":"2026-04-03T18:46:45.907392+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/42741.json