E3T-1 (E3TESTER-1) is a payload in SSO orbit, operated by Korea Aerospace Research Institute, launched 2025.
| Orbit class | SSO |
| Inclination | 97.7478° |
| Eccentricity | 0.0013878 |
| Period | 96.4 min |
| Apogee | 594 km |
| Perigee | 575 km |
| Mean motion | 14.94269051 rev/day |
| RAAN | 116.9739° |
| Arg of perigee | 319.1664° |
| Mean anomaly | 40.8515° |
| B* | 1.2870e-4 |
| Rev at epoch | 3,315 |
1 66662U 25274N 26187.71849740 .00001326 00000-0 12870-3 0 99932 66662 97.7478 116.9739 0013878 319.1664 40.8515 14.94269051 33159{
"OBJECT_NAME": "E3T-1 (E3TESTER-1)",
"OBJECT_ID": "2025-274N",
"EPOCH": "2026-07-06T17:14:38.175+00:00",
"MEAN_MOTION": 14.94269051,
"ECCENTRICITY": 0.0013878,
"INCLINATION": 97.7478,
"RA_OF_ASC_NODE": 116.9739,
"ARG_OF_PERICENTER": 319.1664,
"MEAN_ANOMALY": 40.8515,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 66662,
"REV_AT_EPOCH": 3315,
"BSTAR": 0.0001287,
"MEAN_MOTION_DOT": 0.00001326,
"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 | E3T-1 (E3TESTER-1) |
| Operator | |
| Country | South Korea |
| Launch date | |
| Launch mass (kg) | |
| Mission purpose | — |
| Object class | PAYLOADHIGH |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Orbital regime |
| Status |