The Dexes / Satellite Decay / 25989
CelestialObjectDex · Satellite Decay
XMM-NEWTON
25989 · 2026-04-05T13:09:05Z
Fixes
77
Observations
77
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-05T13:09:05.647392+00:00 |
|---|---|
| end_utc | 2026-08-11T04:50:02.046912+00:00 |
| family | celestialdex |
| norad_id | 25,989 |
| object_name | XMM-NEWTON |
| group | active |
| eccentricity_median | 0.467 |
| inclination_deg_median | 64.468 |
| n_snaps | 77 |
| span_days | 127.653 |
| mean_motion_first | 0.501 |
| mean_motion_last | 0.501 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 60558.563 |
| altitude_last_km | 60563.125 |
| decay_rate_rev_day2 | -0.000 |
| altitude_decay_km_day | 0.025 |
| 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 | 2026-04-05T13:09:05.647392+00:00 |
| last_utc | 2026-08-11T04:50:02.046912+00:00 |
| last_fix_utc | 2026-08-11T04:50:02.046912+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-05T13:09:05.647392+00:00","mean_motion":0.50130994,"altitude_km":60558.563,"eccentricity":0.4698499,"inclination_deg":64.8516},{"utc":"2026-04-07T13:00:40.330944+00:00","mean_motion": |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/25989.json