▸Orbital parameters

Orbit class	LEO
Inclination	41.4675°
Eccentricity	0.0002919
Period	92.4 min
Apogee	395 km
Perigee	391 km
Mean motion	15.58021672 rev/day
RAAN	201.0524°
Arg of perigee	274.9439°
Mean anomaly	85.1065°
B*	1.3289e-4
Rev at epoch	29,627

▸Two-line element set (TLE)

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

1 48274U 21035A 26188.07426088 .00009938 00000-0 13289-3 0 9991

2 48274 41.4675 201.0524 0002919 274.9439 85.1065 15.58021672296275

▸ source OMM (JSON)

{
  "OBJECT_NAME": "CSS (TIANHE)",
  "OBJECT_ID": "2021-035A",
  "EPOCH": "2026-07-07T01:46:56.14+00:00",
  "MEAN_MOTION": 15.58021672,
  "ECCENTRICITY": 0.0002919,
  "INCLINATION": 41.4675,
  "RA_OF_ASC_NODE": 201.0524,
  "ARG_OF_PERICENTER": 274.9439,
  "MEAN_ANOMALY": 85.1065,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 48274,
  "REV_AT_EPOCH": 29627,
  "BSTAR": 0.00013289,
  "MEAN_MOTION_DOT": 0.00009938,
  "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	CSS (TIANHE)
Operator	China Manned Space Engineering OfficeHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree China National Space AdministrationMEDIUMvia Wikidata
Country	China
Launch date	Apr 29, 2021HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	21500HIGHvia GCAT — Jonathan McDowell's General Catalog

▸Data quality

Score90 / 100

Claims8

Sources2

TLEavailable

▸Sources

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

▸Actions

GET /api/v1/satellites/48274

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