The Dexes / Satellite Orbital Decay / 38749
CelestialObjectDex · Satellite Orbital Decay
INTELSAT 21 (IS-21)
38749 · 2026-04-03T12:33:08Z
Fixes
290
Observations
290
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Start UTCstart_utc | 2026-04-03T12:33:08.828640+00:00 |
|---|---|
| End UTCend_utc | 2026-08-23T21:27:46.090080+00:00 |
| Familyfamily | celestialdex |
| NORAD IDnorad_id | 38,749 |
| Object nameobject_name | INTELSAT 21 (IS-21) |
| Groupgroup | active |
| Eccentricity medianeccentricity_median | 0.000 |
| Inclination deg medianinclination_deg_median | 0.024 |
| Number of snapsn_snaps | 290 |
| Span (days)span_days | 142.371 |
| Mean motion firstmean_motion_first | 1.003 |
| Mean motion lastmean_motion_last | 1.003 |
| Delta mean motiondelta_mean_motion | -0.000 |
| Altitude first (km)altitude_first_km | 35786.275 |
| Altitude last (km)altitude_last_km | 35787.550 |
| 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 | 2026-04-03T12:33:08.828640+00:00 |
| Last UTClast_utc | 2026-08-23T21:27:46.090080+00:00 |
| Last fix UTClast_fix_utc | 2026-08-23T21:27:46.090080+00:00 |
| Provisionalprovisional | false |
| Tracktrack | [{"utc":"2026-04-03T12:33:08.828640+00:00","mean_motion":1.00272925,"altitude_km":35786.275,"eccentricity":0.00018494,"inclination_deg":0.0208},{"utc":"2026-04-04T05:39:57.891744+00:00","mean_motion": |
| Total sensor hitstotal_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/38749.json