SENTINEL-1D is a payload in SSO orbit, operated by European Commission DG-GROW Directorate I/2, Copernicus Unit / European Space Agency, launched 2025.
| Orbit class | SSO |
| Inclination | 98.1836° |
| Eccentricity | 0.0001333 |
| Period | 98.7 min |
| Apogee | 697 km |
| Perigee | 695 km |
| Mean motion | 14.59197672 rev/day |
| RAAN | 194.9975° |
| Arg of perigee | 91.4547° |
| Mean anomaly | 268.6806° |
| B* | -3.5241e-6 |
| Rev at epoch | 3,560 |
1 66315U 25251A 26187.91559638 -.00000062 00000-0 -35241-5 0 99962 66315 98.1836 194.9975 0001333 91.4547 268.6806 14.59197672 35603{
"OBJECT_NAME": "SENTINEL-1D",
"OBJECT_ID": "2025-251A",
"EPOCH": "2026-07-06T21:58:27.527+00:00",
"MEAN_MOTION": 14.59197672,
"ECCENTRICITY": 0.0001333,
"INCLINATION": 98.1836,
"RA_OF_ASC_NODE": 194.9975,
"ARG_OF_PERICENTER": 91.4547,
"MEAN_ANOMALY": 268.6806,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 66315,
"REV_AT_EPOCH": 3560,
"BSTAR": -0.0000035241,
"MEAN_MOTION_DOT": -6.2e-7,
"MEAN_MOTION_DDOT": 0
}Reconstructed from CelesTrak OMM mean-elements (element-set number is a placeholder). TLE/OMM data is approximate. Not for operational use or collision avoidance.
| Name | SENTINEL-1D |
| Operator | European Commission DG-GROW Directorate I/2, Copernicus Unit / European Space AgencyHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree |
| Country | European Union |
| Launch date | |
| Launch mass (kg) |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Mission purpose |
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