▸Orbital parameters

Orbit class	LEO
Inclination	86.3985°
Eccentricity	0.0002221
Period	100.4 min
Apogee	779 km
Perigee	776 km
Mean motion	14.34218296 rev/day
RAAN	345.4255°
Arg of perigee	92.4397°
Mean anomaly	267.7053°
B*	2.0543e-5
Rev at epoch	47,265

▸Two-line element set (TLE)

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

1 42812U 17039K 26187.91216251 .00000077 00000-0 20543-4 0 9990

2 42812 86.3985 345.4255 0002221 92.4397 267.7053 14.34218296472651

▸ source OMM (JSON)

{
  "OBJECT_NAME": "IRIDIUM 121",
  "OBJECT_ID": "2017-039K",
  "EPOCH": "2026-07-06T21:53:30.841+00:00",
  "MEAN_MOTION": 14.34218296,
  "ECCENTRICITY": 0.0002221,
  "INCLINATION": 86.3985,
  "RA_OF_ASC_NODE": 345.4255,
  "ARG_OF_PERICENTER": 92.4397,
  "MEAN_ANOMALY": 267.7053,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 42812,
  "REV_AT_EPOCH": 47265,
  "BSTAR": 0.000020543,
  "MEAN_MOTION_DOT": 7.7e-7,
  "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	IRIDIUM 121
Operator	Iridium Satellite LLCHIGHvia GCAT — Jonathan McDowell's General Catalog
Country	United States
Launch date	Jun 25, 2017HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	860HIGHvia 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/42812

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