The Dexes / Satellite Orbital Decay / 39451
CelestialObjectDex · Satellite Orbital Decay
SWARM B
39451 · 2026-04-03T13:20:34Z
Fixes
322
Observations
322
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Start UTCstart_utc | 2026-04-03T13:20:34.318464+00:00 |
|---|---|
| End UTCend_utc | 2026-08-23T22:46:26.035680+00:00 |
| Familyfamily | celestialdex |
| NORAD IDnorad_id | 39,451 |
| Object nameobject_name | SWARM B |
| Groupgroup | active |
| Eccentricity medianeccentricity_median | 0.000 |
| Inclination deg medianinclination_deg_median | 87.746 |
| Number of snapsn_snaps | 322 |
| Span (days)span_days | 142.393 |
| Mean motion firstmean_motion_first | 15.281 |
| Mean motion lastmean_motion_last | 15.289 |
| Delta mean motiondelta_mean_motion | 0.008 |
| Altitude first (km)altitude_first_km | 481.489 |
| Altitude last (km)altitude_last_km | 479.005 |
| Decay rate rev day2decay_rate_rev_day2 | 0.000 |
| Altitude decay km dayaltitude_decay_km_day | -0.018 |
| Decay notedecay_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 UTCfirst_utc | 2026-04-03T13:20:34.318464+00:00 |
| Last UTClast_utc | 2026-08-23T22:46:26.035680+00:00 |
| Last fix UTClast_fix_utc | 2026-08-23T22:46:26.035680+00:00 |
| Provisionalprovisional | false |
| Tracktrack | [{"utc":"2026-04-03T13:20:34.318464+00:00","mean_motion":15.2810103,"altitude_km":481.489,"eccentricity":0.00029526,"inclination_deg":87.7507},{"utc":"2026-04-03T19:37:46.311168+00:00","mean_motion":1 |
| Total sensor hitstotal_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/39451.json