▸Orbital parameters

Orbit class	LEO
Inclination	81.0019°
Eccentricity	0.0005919
Period	104.0 min
Apogee	950 km
Perigee	941 km
Mean motion	13.85151602 rev/day
RAAN	52.3053°
Arg of perigee	261.2131°
Mean anomaly	98.8355°
B*	1.7687e-5
Rev at epoch	16,487

▸Two-line element set (TLE)

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

1 56169U 23050H 26188.10173587 .00000031 00000-0 17687-4 0 9991

2 56169 81.0019 52.3053 0005919 261.2131 98.8355 13.85151602164872

▸ source OMM (JSON)

{
  "OBJECT_NAME": "CHECKMATE 3",
  "OBJECT_ID": "2023-050H",
  "EPOCH": "2026-07-07T02:26:29.979+00:00",
  "MEAN_MOTION": 13.85151602,
  "ECCENTRICITY": 0.0005919,
  "INCLINATION": 81.0019,
  "RA_OF_ASC_NODE": 52.3053,
  "ARG_OF_PERICENTER": 261.2131,
  "MEAN_ANOMALY": 98.8355,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 56169,
  "REV_AT_EPOCH": 16487,
  "BSTAR": 0.000017687,
  "MEAN_MOTION_DOT": 3.1e-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.

▸Satellite metadata

Name	CHECKMATE 3
Operator	Space Development AgencyHIGHvia GCAT — Jonathan McDowell's General Catalog
Country	United States
Launch date	Apr 2, 2023HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	300HIGHvia GCAT — Jonathan McDowell's General Catalog
Mission purpose	—
Object class	PAYLOADHIGH

▸Data quality

Score85 / 100

Claims7

Sources1

TLEavailable

▸Sources

GCAT — Jonathan McDowell's General CatalogCC BY 4.0planet4589.org

▸Actions

GET /api/v1/satellites/56169

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