NAVSTAR 85 (USA 581) is a payload in MEO orbit, operated by US Space Force Space Systems Command, launched 2026.
| Orbit class | MEO |
| Inclination | 55.0999° |
| Eccentricity | 0.0021544 |
| Period | 718.0 min |
| Apogee | 20,239 km |
| Perigee | 20,124 km |
| Mean motion | 2.00570734 rev/day |
| RAAN | 87.9946° |
| Arg of perigee | 259.3193° |
| Mean anomaly | 100.4784° |
| B* | 0.0000e+0 |
| Rev at epoch | 43,199 |
1 67588U 26017A 26187.14267316 -.00000014 00000-0 00000-0 0 99902 67588 55.0999 87.9946 0021544 259.3193 100.4784 2.00570734431992{
"OBJECT_NAME": "NAVSTAR 85 (USA 581)",
"OBJECT_ID": "2026-017A",
"EPOCH": "2026-07-06T03:25:26.961+00:00",
"MEAN_MOTION": 2.00570734,
"ECCENTRICITY": 0.00215436,
"INCLINATION": 55.0999,
"RA_OF_ASC_NODE": 87.9946,
"ARG_OF_PERICENTER": 259.3193,
"MEAN_ANOMALY": 100.4784,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 67588,
"REV_AT_EPOCH": 43199,
"BSTAR": 0,
"MEAN_MOTION_DOT": -1.4e-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 | NAVSTAR 85 (USA 581) |
| Operator | US Space Force Space Systems CommandHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree |
| Country | |
| Launch date | |
| Launch mass (kg) | 4352 |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Mission purpose | — |
| Object class |
| Orbital regime |
| Status |