The Dexes / Satellite Decay / 63209
CelestialObjectDex · Satellite Decay
TIANYAN 23
63209 · 2026-04-03T14:58:00Z
Fixes
306
Observations
306
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T14:58:00.416352+00:00 |
|---|---|
| end_utc | 2026-08-09T21:09:30.599424+00:00 |
| family | celestialdex |
| norad_id | 63,209 |
| object_name | TIANYAN 23 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 97.451 |
| n_snaps | 306 |
| span_days | 128.258 |
| mean_motion_first | 15.438 |
| mean_motion_last | 15.520 |
| delta_mean_motion | 0.082 |
| altitude_first_km | 434.903 |
| altitude_last_km | 410.818 |
| decay_rate_rev_day2 | 0.001 |
| altitude_decay_km_day | -0.190 |
| 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 | 2026-04-03T14:58:00.416352+00:00 |
| last_utc | 2026-08-09T21:09:30.599424+00:00 |
| last_fix_utc | 2026-08-09T21:09:30.599424+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T14:58:00.416352+00:00","mean_motion":15.43801062,"altitude_km":434.903,"eccentricity":0.00049954,"inclination_deg":97.4532},{"utc":"2026-04-03T21:11:20.990976+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/63209.json