▸Orbital parameters

Orbit class	LEO
Inclination	53.1602°
Eccentricity	0.0002198
Period	95.1 min
Apogee	524 km
Perigee	521 km
Mean motion	15.14454471 rev/day
RAAN	52.3230°
Arg of perigee	47.2022°
Mean anomaly	118.8866°
B*	2.1548e-3
Rev at epoch	528

▸Two-line element set (TLE)

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

1 49428U 21104W 26188.16670139 .00040006 00000-0 21548-2 0 9995

2 49428 53.1602 52.3230 0002198 47.2022 118.8866 15.14454471 5287

▸ source OMM (JSON)

{
  "OBJECT_NAME": "STARLINK-3121",
  "OBJECT_ID": "2021-104W",
  "EPOCH": "2026-07-07T04:00:03+00:00",
  "MEAN_MOTION": 15.14454471,
  "ECCENTRICITY": 0.0002198,
  "INCLINATION": 53.1602,
  "RA_OF_ASC_NODE": 52.323,
  "ARG_OF_PERICENTER": 47.2022,
  "MEAN_ANOMALY": 118.8866,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 49428,
  "REV_AT_EPOCH": 528,
  "BSTAR": 0.0021548,
  "MEAN_MOTION_DOT": 0.00040006,
  "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-3121
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/49428

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