The Dexes / Satellite Orbital Decay / 54109
CelestialObjectDex · Satellite Orbital Decay
COSMOS 2561
54109 · 2026-04-03T12:04:46Z
Fixes
253
Observations
253
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Start UTCstart_utc | 2026-04-03T12:04:46.250112+00:00 |
|---|---|
| End UTCend_utc | 2026-08-19T15:39:28.812384+00:00 |
| Familyfamily | celestialdex |
| NORAD IDnorad_id | 54,109 |
| Object nameobject_name | COSMOS 2561 |
| Groupgroup | active |
| Eccentricity medianeccentricity_median | 0.001 |
| Inclination deg medianinclination_deg_median | 96.918 |
| Number of snapsn_snaps | 253 |
| Span (days)span_days | 138.149 |
| Mean motion firstmean_motion_first | 15.498 |
| Mean motion lastmean_motion_last | 15.531 |
| Delta mean motiondelta_mean_motion | 0.033 |
| Altitude first (km)altitude_first_km | 417.221 |
| Altitude last (km)altitude_last_km | 407.563 |
| Decay rate rev day2decay_rate_rev_day2 | 0.000 |
| Altitude decay km dayaltitude_decay_km_day | -0.071 |
| 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 | 2026-04-03T12:04:46.250112+00:00 |
| Last UTClast_utc | 2026-08-19T15:39:28.812384+00:00 |
| Last fix UTClast_fix_utc | 2026-08-19T15:39:28.812384+00:00 |
| Provisionalprovisional | false |
| Tracktrack | [{"utc":"2026-04-03T12:04:46.250112+00:00","mean_motion":15.49830583,"altitude_km":417.221,"eccentricity":0.0007765,"inclination_deg":96.9263},{"utc":"2026-04-03T21:22:37.021728+00:00","mean_motion":1 |
| Total sensor hitstotal_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/54109.json