▸Orbital parameters

Orbit class	SSO
Inclination	97.5004°
Eccentricity	0.0002179
Period	96.2 min
Apogee	580 km
Perigee	577 km
Mean motion	14.96199718 rev/day
RAAN	58.9970°
Arg of perigee	94.3687°
Mean anomaly	265.7784°
B*	3.6426e-5
Rev at epoch	42,593

▸Two-line element set (TLE)

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

1 43618U 18071A 26188.21869875 .00000356 00000-0 36426-4 0 9999

2 43618 97.5004 58.9970 0002179 94.3687 265.7784 14.96199718425930

▸ source OMM (JSON)

{
  "OBJECT_NAME": "SSTL S1-4",
  "OBJECT_ID": "2018-071A",
  "EPOCH": "2026-07-07T05:14:55.572+00:00",
  "MEAN_MOTION": 14.96199718,
  "ECCENTRICITY": 0.0002179,
  "INCLINATION": 97.5004,
  "RA_OF_ASC_NODE": 58.997,
  "ARG_OF_PERICENTER": 94.3687,
  "MEAN_ANOMALY": 265.7784,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 43618,
  "REV_AT_EPOCH": 42593,
  "BSTAR": 0.000036426,
  "MEAN_MOTION_DOT": 0.00000356,
  "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	SSTL S1-4
Operator	Surrey Satellite Technology Ltd/AstriumHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree DMC International ImagingMEDIUMvia Wikidata
Country	United Kingdom
Launch date	Sep 16, 2018HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	444HIGHvia GCAT — Jonathan McDowell's General Catalog⚠

▸Data quality

Score90 / 100

Claims9

Sources2

TLEavailable

▸Sources

GCAT — Jonathan McDowell's General CatalogCC BY 4.0planet4589.org
WikidataCC0 1.0query.wikidata.org

▸Actions

GET /api/v1/satellites/43618

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