▸Orbital parameters

Orbit class	SSO
Inclination	97.4166°
Eccentricity	0.0002684
Period	94.7 min
Apogee	508 km
Perigee	504 km
Mean motion	15.20023262 rev/day
RAAN	261.2633°
Arg of perigee	337.6170°
Mean anomaly	22.4947°
B*	2.2665e-4
Rev at epoch	3,345

▸Two-line element set (TLE)

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

1 66721U 25276BH 26188.17732979 .00004817 00000-0 22665-3 0 9998

2 66721 97.4166 261.2633 0002684 337.6170 22.4947 15.20023262 33453

▸ source OMM (JSON)

{
  "OBJECT_NAME": "FLOCK 4H-18",
  "OBJECT_ID": "2025-276BH",
  "EPOCH": "2026-07-07T04:15:21.294+00:00",
  "MEAN_MOTION": 15.20023262,
  "ECCENTRICITY": 0.0002684,
  "INCLINATION": 97.4166,
  "RA_OF_ASC_NODE": 261.2633,
  "ARG_OF_PERICENTER": 337.617,
  "MEAN_ANOMALY": 22.4947,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 66721,
  "REV_AT_EPOCH": 3345,
  "BSTAR": 0.00022665,
  "MEAN_MOTION_DOT": 0.00004817,
  "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	FLOCK 4H-18
Operator	Planet Labs, Inc. (Planet)HIGHvia GCAT — Jonathan McDowell's General Catalog
Country	United States
Launch date	Nov 28, 2025HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	5.7HIGHvia 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/66721

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