The Dexes / Satellite Decay / 54234
CelestialObjectDex · Satellite Decay
NOAA 21 (JPSS-2)
54234 · 2026-04-03T14:28:24Z
Fixes
291
Observations
291
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:28:24.865248+00:00 |
|---|---|
| end_utc | 2026-08-09T19:32:23.292672+00:00 |
| family | celestialdex |
| norad_id | 54,234 |
| object_name | NOAA 21 (JPSS-2) |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 98.706 |
| n_snaps | 291 |
| span_days | 128.211 |
| mean_motion_first | 14.196 |
| mean_motion_last | 14.195 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 826.844 |
| altitude_last_km | 826.893 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.001 |
| 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 | 2026-04-03T14:28:24.865248+00:00 |
| last_utc | 2026-08-09T19:32:23.292672+00:00 |
| last_fix_utc | 2026-08-09T19:32:23.292672+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:28:24.865248+00:00","mean_motion":14.19559087,"altitude_km":826.844,"eccentricity":0.00026653,"inclination_deg":98.7584},{"utc":"2026-04-03T19:32:54.325824+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/54234.json