▸Orbital parameters

Orbit class	LEO
Inclination	82.5161°
Eccentricity	0.0606786
Period	105.8 min
Apogee	1,480 km
Perigee	581 km
Mean motion	13.61393505 rev/day
RAAN	215.8434°
Arg of perigee	219.8858°
Mean anomaly	135.6193°
B*	9.2620e-5
Rev at epoch	55,291

▸Two-line element set (TLE)

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

1 40555U 15020D 26188.17786067 .00000262 00000-0 92620-4 0 9997

2 40555 82.5161 215.8434 0606786 219.8858 135.6193 13.61393505552911

▸ source OMM (JSON)

{
  "OBJECT_NAME": "COSMOS 2504",
  "OBJECT_ID": "2015-020D",
  "EPOCH": "2026-07-07T04:16:07.162+00:00",
  "MEAN_MOTION": 13.61393505,
  "ECCENTRICITY": 0.0606786,
  "INCLINATION": 82.5161,
  "RA_OF_ASC_NODE": 215.8434,
  "ARG_OF_PERICENTER": 219.8858,
  "MEAN_ANOMALY": 135.6193,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 40555,
  "REV_AT_EPOCH": 55291,
  "BSTAR": 0.00009262,
  "MEAN_MOTION_DOT": 0.00000262,
  "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 2504
Operator	Central Sci. Res. Inst. for Chemistry and MechanicsHIGHvia GCAT — Jonathan McDowell's General Catalog
Country	RussiaMEDIUMvia Wikidata
Launch date	Mar 31, 2015HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	100HIGHvia GCAT — Jonathan McDowell's General Catalog
Mission purpose	—

▸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/40555

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