▸Orbital parameters

Orbit class	SSO
Inclination	97.3845°
Eccentricity	0.0004811
Period	94.1 min
Apogee	477 km
Perigee	470 km
Mean motion	15.30859694 rev/day
RAAN	81.8907°
Arg of perigee	116.4870°
Mean anomaly	243.6865°
B*	3.6963e-4
Rev at epoch	7,300

▸Two-line element set (TLE)

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

1 63833U 25052BP 26188.16910809 .00010954 00000-0 36963-3 0 9995

2 63833 97.3845 81.8907 0004811 116.4870 243.6865 15.30859694 73009

▸ source OMM (JSON)

{
  "OBJECT_NAME": "HERMES-4",
  "OBJECT_ID": "2025-052BP",
  "EPOCH": "2026-07-07T04:03:30.939+00:00",
  "MEAN_MOTION": 15.30859694,
  "ECCENTRICITY": 0.0004811,
  "INCLINATION": 97.3845,
  "RA_OF_ASC_NODE": 81.8907,
  "ARG_OF_PERICENTER": 116.487,
  "MEAN_ANOMALY": 243.6865,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 63833,
  "REV_AT_EPOCH": 7300,
  "BSTAR": 0.00036963,
  "MEAN_MOTION_DOT": 0.00010954,
  "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	HERMES-4
Operator	Italian Space AgencyHIGHvia GCAT — Jonathan McDowell's General Catalog
Country	Italy
Launch date	Mar 15, 2025HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	5HIGHvia 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/63833

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