The Dexes / Satellite Decay / 40549
CelestialObjectDex · Satellite Decay
BEIDOU-3S IGSO-1S
40549 · 2026-03-23T06:58:51Z
Fixes
175
Sensor hits
0
Observations
175
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-03-23T06:58:51.098016+00:00 |
|---|---|
| end_utc | 2026-08-09T16:29:01.006944+00:00 |
| family | celestialdex |
| norad_id | 40,549 |
| object_name | BEIDOU-3S IGSO-1S |
| group | active |
| eccentricity_median | 0.004 |
| inclination_deg_median | 49.180 |
| n_snaps | 175 |
| span_days | 139.396 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | 0.000 |
| altitude_first_km | 35787.420 |
| altitude_last_km | 35779.668 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.590 |
| 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 | 2026-03-23T06:58:51.098016+00:00 |
| last_utc | 2026-08-09T16:29:01.006944+00:00 |
| last_fix_utc | 2026-08-09T16:29:01.006944+00:00 |
| provisional | false |
| track | [{"utc":"2026-03-23T06:58:51.098016+00:00","mean_motion":1.00268843,"altitude_km":35787.42,"eccentricity":0.0036261,"inclination_deg":49.3559},{"utc":"2026-04-09T20:38:00.990816+00:00","mean_motion":1 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/40549.json