The Dexes / Satellite Decay / 37781
CelestialObjectDex · Satellite Decay
HAIYANG-2A
37781 · 2026-04-03T20:15:14Z
Fixes
299
Observations
299
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T20:15:14.109984+00:00 |
|---|---|
| end_utc | 2026-08-09T20:58:11.454816+00:00 |
| family | celestialdex |
| norad_id | 37,781 |
| object_name | HAIYANG-2A |
| group | active |
| eccentricity_median | 0.001 |
| inclination_deg_median | 99.340 |
| n_snaps | 299 |
| span_days | 128.030 |
| mean_motion_first | 13.769 |
| mean_motion_last | 13.725 |
| delta_mean_motion | -0.044 |
| altitude_first_km | 974.856 |
| altitude_last_km | 990.495 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.120 |
| 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 | 2026-04-03T20:15:14.109984+00:00 |
| last_utc | 2026-08-09T20:58:11.454816+00:00 |
| last_fix_utc | 2026-08-09T20:58:11.454816+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T20:15:14.109984+00:00","mean_motion":13.76913067,"altitude_km":974.856,"eccentricity":0.0003867,"inclination_deg":99.3427},{"utc":"2026-04-03T21:59:52.359072+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/37781.json