▸Orbital parameters

Orbit class	LEO
Inclination	51.6305°
Eccentricity	0.0006690
Period	93.0 min
Apogee	424 km
Perigee	415 km
Mean motion	15.48929707 rev/day
RAAN	201.1096°
Arg of perigee	265.7165°
Mean anomaly	94.3058°
B*	1.1712e-4
Rev at epoch	57,485

▸Two-line element set (TLE)

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

1 25544U 98067A 26188.18576601 .00005994 00000-0 11712-3 0 9991

2 25544 51.6305 201.1096 0006690 265.7165 94.3058 15.48929707574854

▸ source OMM (JSON)

{
  "OBJECT_NAME": "ISS (ZARYA)",
  "OBJECT_ID": "1998-067A",
  "EPOCH": "2026-07-07T04:27:30.183+00:00",
  "MEAN_MOTION": 15.48929707,
  "ECCENTRICITY": 0.000669,
  "INCLINATION": 51.6305,
  "RA_OF_ASC_NODE": 201.1096,
  "ARG_OF_PERICENTER": 265.7165,
  "MEAN_ANOMALY": 94.3058,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 25544,
  "REV_AT_EPOCH": 57485,
  "BSTAR": 0.00011712,
  "MEAN_MOTION_DOT": 0.00005994,
  "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	ISS (ZARYA)
Operator	NASA Johnson Space Flight CenterHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree National Aeronautics and Space AdministrationMEDIUMvia Wikidata
Country	United States
Launch date	Nov 20, 1998HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	20281HIGHvia GCAT — Jonathan McDowell's General Catalog⚠

▸Data quality

Score95 / 100

Claims9

Sources3

TLEavailable

▸Sources

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

▸Actions

GET /api/v1/satellites/25544

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