The Dexes / Satellite Decay / 19751
CelestialObjectDex · Satellite Decay
COSMOS 1989 (ETALON 1)
19751 · 2026-04-03T06:45:25Z
Fixes
151
Observations
151
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-03T06:45:25.246080+00:00 |
|---|---|
| end_utc | 2026-08-09T12:05:28.135104+00:00 |
| family | celestialdex |
| norad_id | 19,751 |
| object_name | COSMOS 1989 (ETALON 1) |
| group | active |
| eccentricity_median | 0.002 |
| inclination_deg_median | 64.942 |
| n_snaps | 151 |
| span_days | 128.222 |
| mean_motion_first | 2.132 |
| mean_motion_last | 2.132 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 19125.574 |
| altitude_last_km | 19125.583 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.000 |
| 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 | 2026-04-03T06:45:25.246080+00:00 |
| last_utc | 2026-08-09T12:05:28.135104+00:00 |
| last_fix_utc | 2026-08-09T12:05:28.135104+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-03T06:45:25.246080+00:00","mean_motion":2.13156071,"altitude_km":19125.574,"eccentricity":0.00233984,"inclination_deg":64.9036},{"utc":"2026-04-04T05:25:46.951104+00:00","mean_motion" |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/19751.json