The Dexes / Satellite Decay / 40663
CelestialObjectDex · Satellite Decay
DIRECTV 15
40663 · 2026-04-02T20:56:06Z
Fixes
204
Observations
204
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 2026-04-02T20:56:06.213696+00:00 |
|---|---|
| end_utc | 2026-08-09T15:05:58.875360+00:00 |
| family | celestialdex |
| norad_id | 40,663 |
| object_name | DIRECTV 15 |
| group | active |
| eccentricity_median | 0.000 |
| inclination_deg_median | 0.021 |
| n_snaps | 204 |
| span_days | 128.757 |
| mean_motion_first | 1.003 |
| mean_motion_last | 1.003 |
| delta_mean_motion | -0.000 |
| altitude_first_km | 35787.243 |
| altitude_last_km | 35787.314 |
| decay_rate_rev_day2 | 0.000 |
| altitude_decay_km_day | -0.002 |
| 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 | 2026-04-02T20:56:06.213696+00:00 |
| last_utc | 2026-08-09T15:05:58.875360+00:00 |
| last_fix_utc | 2026-08-09T15:05:58.875360+00:00 |
| provisional | false |
| track | [{"utc":"2026-04-02T20:56:06.213696+00:00","mean_motion":1.00269475,"altitude_km":35787.243,"eccentricity":0.0000315,"inclination_deg":0.0355},{"utc":"2026-04-04T01:19:38.705376+00:00","mean_motion":1 |
| total_sensor_hits | 0 |
Provenance
- celestrak
Storage: dossier · celestial_storehouse/satellite_decay/40663.json