▸Orbital parameters

Orbit class	SSO
Inclination	97.1464°
Eccentricity	0.0008661
Period	94.3 min
Apogee	492 km
Perigee	480 km
Mean motion	15.26684192 rev/day
RAAN	227.5989°
Arg of perigee	35.0176°
Mean anomaly	325.1631°
B*	1.5589e-4
Rev at epoch	65,801

▸Two-line element set (TLE)

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

1 40143U 14053A 26188.22116411 .00004026 00000-0 15589-3 0 9991

2 40143 97.1464 227.5989 0008661 35.0176 325.1631 15.26684192658015

▸ source OMM (JSON)

{
  "OBJECT_NAME": "YAOGAN-21",
  "OBJECT_ID": "2014-053A",
  "EPOCH": "2026-07-07T05:18:28.579+00:00",
  "MEAN_MOTION": 15.26684192,
  "ECCENTRICITY": 0.0008661,
  "INCLINATION": 97.1464,
  "RA_OF_ASC_NODE": 227.5989,
  "ARG_OF_PERICENTER": 35.0176,
  "MEAN_ANOMALY": 325.1631,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 40143,
  "REV_AT_EPOCH": 65801,
  "BSTAR": 0.00015589,
  "MEAN_MOTION_DOT": 0.00004026,
  "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	YAOGAN-21
Operator	General Armaments Dept. of the PLAHIGHvia GCAT — Jonathan McDowell's General Catalog
Country	China
Launch date	Sep 8, 2014HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	3000HIGHvia 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/40143

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