▸Orbital parameters

Orbit class	SSO
Inclination	97.4563°
Eccentricity	0.0009609
Period	93.9 min
Apogee	472 km
Perigee	459 km
Mean motion	15.33512770 rev/day
RAAN	157.6213°
Arg of perigee	103.9854°
Mean anomaly	256.2458°
B*	3.3949e-4
Rev at epoch	8,387

▸Two-line element set (TLE)

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

1 64881U 25155F 26188.19002044 .00010936 00000-0 33949-3 0 9990

2 64881 97.4563 157.6213 0009609 103.9854 256.2458 15.33512770 83874

▸ source OMM (JSON)

{
  "OBJECT_NAME": "239ALFEROV (RS61S)",
  "OBJECT_ID": "2025-155F",
  "EPOCH": "2026-07-07T04:33:37.766+00:00",
  "MEAN_MOTION": 15.3351277,
  "ECCENTRICITY": 0.0009609,
  "INCLINATION": 97.4563,
  "RA_OF_ASC_NODE": 157.6213,
  "ARG_OF_PERICENTER": 103.9854,
  "MEAN_ANOMALY": 256.2458,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 64881,
  "REV_AT_EPOCH": 8387,
  "BSTAR": 0.00033949,
  "MEAN_MOTION_DOT": 0.00010936,
  "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	239ALFEROV (RS61S)
Operator	GeoskanHIGHvia GCAT — Jonathan McDowell's General Catalog
Country	Russia
Launch date	Jul 25, 2025HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	3HIGHvia 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/64881

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