▸Orbital parameters

Orbit class	LEO
Inclination	70.0006°
Eccentricity	0.0003211
Period	96.1 min
Apogee	574 km
Perigee	570 km
Mean motion	14.98327419 rev/day
RAAN	304.4800°
Arg of perigee	268.0444°
Mean anomaly	92.0347°
B*	-5.8592e-5
Rev at epoch	18,386

▸Two-line element set (TLE)

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

1 55747U 23028G 26187.69008557 -.00000792 00000-0 -58592-4 0 9990

2 55747 70.0006 304.4800 0003211 268.0444 92.0347 14.98327419183866

▸ source OMM (JSON)

{
  "OBJECT_NAME": "STARLINK-5539",
  "OBJECT_ID": "2023-028G",
  "EPOCH": "2026-07-06T16:33:43.393+00:00",
  "MEAN_MOTION": 14.98327419,
  "ECCENTRICITY": 0.0003211,
  "INCLINATION": 70.0006,
  "RA_OF_ASC_NODE": 304.48,
  "ARG_OF_PERICENTER": 268.0444,
  "MEAN_ANOMALY": 92.0347,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 55747,
  "REV_AT_EPOCH": 18386,
  "BSTAR": -0.000058592,
  "MEAN_MOTION_DOT": -0.00000792,
  "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-5539
Operator	SpaceX (Seattle)HIGHvia GCAT — Jonathan McDowell's General Catalog
Country	United States
Launch date	Mar 3, 2023HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	305HIGHvia 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/55747

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