USA 159 (DSP 21) is a payload in GEO orbit, operated by US Air Force Space and Missile Center, launched 2001.
Orbital data last updated 25 days ago. This may not reflect the current orbital state — not for operational use or collision avoidance.
| Orbit class | GEO |
| Inclination | 12.7773° |
| Eccentricity | 0.0001377 |
| Period | 1451.6 min |
| Apogee | 36,096 km |
| Perigee | 36,085 km |
| Mean motion | 0.99197822 rev/day |
| RAAN | 16.4763° |
| Arg of perigee | 134.9774° |
| Mean anomaly | 111.3720° |
| B* | 0.0000e+0 |
| Rev at epoch | 3,290 |
1 26880U 01033A 26163.12239858 -.00000149 00000-0 00000-0 0 99922 26880 12.7773 16.4763 0001377 134.9774 111.3720 0.99197822 32909{
"OBJECT_NAME": "USA 159 (DSP 21)",
"OBJECT_ID": "2001-033A",
"EPOCH": "2026-06-12T02:56:15.237+00:00",
"MEAN_MOTION": 0.99197822,
"ECCENTRICITY": 0.00013771,
"INCLINATION": 12.7773,
"RA_OF_ASC_NODE": 16.4763,
"ARG_OF_PERICENTER": 134.9774,
"MEAN_ANOMALY": 111.372,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 26880,
"REV_AT_EPOCH": 3290,
"BSTAR": 0,
"MEAN_MOTION_DOT": -0.00000149,
"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 | USA 159 (DSP 21) |
| Operator | |
| Country | United States |
| 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 |