▸Orbital parameters

Orbit class	GEO
Inclination	4.5312°
Eccentricity	0.0002010
Period	1436.1 min
Apogee	35,795 km
Perigee	35,778 km
Mean motion	1.00271262 rev/day
RAAN	52.5131°
Arg of perigee	45.1363°
Mean anomaly	109.1078°
B*	0.0000e+0
Rev at epoch	4,873

▸Two-line element set (TLE)

EPOCH Jul 6, 2026SOURCE CelesTrakDERIVED currentUPDATED Jul 7, 2026

1 39120U 13011A 26187.92130762 -.00000274 00000-0 00000-0 0 9999

2 39120 4.5312 52.5131 0002010 45.1363 109.1078 1.00271262 48733

▸ source OMM (JSON)

{
  "OBJECT_NAME": "SBIRS GEO-2 (USA 241)",
  "OBJECT_ID": "2013-011A",
  "EPOCH": "2026-07-06T22:06:40.978+00:00",
  "MEAN_MOTION": 1.00271262,
  "ECCENTRICITY": 0.000201,
  "INCLINATION": 4.5312,
  "RA_OF_ASC_NODE": 52.5131,
  "ARG_OF_PERICENTER": 45.1363,
  "MEAN_ANOMALY": 109.1078,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 39120,
  "REV_AT_EPOCH": 4873,
  "BSTAR": 0,
  "MEAN_MOTION_DOT": -0.00000274,
  "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.

▸Satellite metadata

Name	SBIRS GEO-2 (USA 241)
Operator	US Air Force Space CommandHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree United States Air ForceMEDIUMvia Wikidata
Country	United States
Launch date	Mar 19, 2013HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	4500HIGHvia GCAT — Jonathan McDowell's General Catalog

▸Data quality

Score90 / 100

Claims8

Sources2

TLEavailable

▸Sources

GCAT — Jonathan McDowell's General CatalogCC BY 4.0planet4589.org
WikidataCC0 1.0query.wikidata.org

▸Actions

GET /api/v1/satellites/39120

//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.