The Dexes / Satellite Orbital Decay / 1520
CelestialObjectDex · Satellite Orbital Decay
CALSPHERE 4A
1520 · 2026-04-03T12:04:30Z
Fixes
304
Observations
304
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Start UTCstart_utc | 2026-04-03T12:04:30.984096+00:00 |
|---|---|
| End UTCend_utc | 2026-08-23T23:29:50.105760+00:00 |
| Familyfamily | celestialdex |
| NORAD IDnorad_id | 1,520 |
| Object nameobject_name | CALSPHERE 4A |
| Groupgroup | active |
| Eccentricity medianeccentricity_median | 0.007 |
| Inclination deg medianinclination_deg_median | 89.897 |
| Number of snapsn_snaps | 304 |
| Span (days)span_days | 142.476 |
| Mean motion firstmean_motion_first | 13.363 |
| Mean motion lastmean_motion_last | 13.363 |
| Delta mean motiondelta_mean_motion | 0.000 |
| Altitude first (km)altitude_first_km | 1123.228 |
| Altitude last (km)altitude_last_km | 1123.138 |
| Decay rate rev day2decay_rate_rev_day2 | 0.000 |
| Altitude decay km dayaltitude_decay_km_day | -0.001 |
| 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 | 2026-04-03T12:04:30.984096+00:00 |
| Last UTClast_utc | 2026-08-23T23:29:50.105760+00:00 |
| Last fix UTClast_fix_utc | 2026-08-23T23:29:50.105760+00:00 |
| Provisionalprovisional | false |
| Tracktrack | [{"utc":"2026-04-03T12:04:30.984096+00:00","mean_motion":13.36264251,"altitude_km":1123.228,"eccentricity":0.00680715,"inclination_deg":89.8984},{"utc":"2026-04-03T19:01:04.662048+00:00","mean_motion" |
| Total sensor hitstotal_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/1520.json