▸Orbital parameters

Orbit class	LEO
Inclination	53.1613°
Eccentricity	0.0000910
Period	94.0 min
Apogee	471 km
Perigee	470 km
Mean motion	15.31700032 rev/day
RAAN	45.1464°
Arg of perigee	92.0772°
Mean anomaly	268.0333°
B*	-1.3719e-5
Rev at epoch	25,667

▸Two-line element set (TLE)

EPOCH Jul 5, 2026SOURCE CelesTrakDERIVED currentUPDATED Jul 7, 2026

1 49453U 21104AX 26186.98550402 -.00000791 00000-0 -13719-4 0 9993

2 49453 53.1613 45.1464 0000910 92.0772 268.0333 15.31700032256670

▸ source OMM (JSON)

{
  "OBJECT_NAME": "STARLINK-3129",
  "OBJECT_ID": "2021-104AX",
  "EPOCH": "2026-07-05T23:39:07.547+00:00",
  "MEAN_MOTION": 15.31700032,
  "ECCENTRICITY": 0.00009101,
  "INCLINATION": 53.1613,
  "RA_OF_ASC_NODE": 45.1464,
  "ARG_OF_PERICENTER": 92.0772,
  "MEAN_ANOMALY": 268.0333,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 49453,
  "REV_AT_EPOCH": 25667,
  "BSTAR": -0.000013718923,
  "MEAN_MOTION_DOT": -0.00000791,
  "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	STARLINK-3129
Operator	SpaceX (Seattle)HIGHvia GCAT — Jonathan McDowell's General Catalog
Country	United States
Launch date	Nov 13, 2021HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	290HIGHvia 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/49453

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