▸Orbital parameters

Orbit class	SSO
Inclination	97.8294°
Eccentricity	0.0016089
Period	95.6 min
Apogee	558 km
Perigee	535 km
Mean motion	15.06650465 rev/day
RAAN	244.7635°
Arg of perigee	180.7463°
Mean anomaly	179.3742°
B*	9.4209e-5
Rev at epoch	62,187

▸Two-line element set (TLE)

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

1 40420U 15009A 26187.72381558 .00001335 00000-0 94209-4 0 9998

2 40420 97.8294 244.7635 0016089 180.7463 179.3742 15.06650465621870

▸ source OMM (JSON)

{
  "OBJECT_NAME": "COSMOS 2503",
  "OBJECT_ID": "2015-009A",
  "EPOCH": "2026-07-06T17:22:17.666+00:00",
  "MEAN_MOTION": 15.06650465,
  "ECCENTRICITY": 0.0016089,
  "INCLINATION": 97.8294,
  "RA_OF_ASC_NODE": 244.7635,
  "ARG_OF_PERICENTER": 180.7463,
  "MEAN_ANOMALY": 179.3742,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 40420,
  "REV_AT_EPOCH": 62187,
  "BSTAR": 0.000094209,
  "MEAN_MOTION_DOT": 0.00001335,
  "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	COSMOS 2503
Operator	Aerospace Defence ForcesHIGHvia GCAT — Jonathan McDowell's General Catalog
Country	Russia
Launch date	Feb 27, 2015HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	3700HIGHvia 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/40420

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