COSMOS 2557 [GLONASS-K] is a payload in MEO orbit, operated by Aerospace Defence Forces / GLONASS Information-Analytic Center, launched 2022.
| Orbit class | MEO |
| Inclination | 64.2868° |
| Eccentricity | 0.0010592 |
| Period | 675.7 min |
| Apogee | 19,157 km |
| Perigee | 19,103 km |
| Mean motion | 2.13102507 rev/day |
| RAAN | 313.8271° |
| Arg of perigee | 272.6980° |
| Mean anomaly | 87.1931° |
| B* | 0.0000e+0 |
| Rev at epoch | 3,111 |
1 52984U 22075A 26186.87934661 -.00000046 00000-0 00000-0 0 99922 52984 64.2868 313.8271 0010592 272.6980 87.1931 2.13102507 31116{
"OBJECT_NAME": "COSMOS 2557 [GLONASS-K]",
"OBJECT_ID": "2022-075A",
"EPOCH": "2026-07-05T21:06:15.547+00:00",
"MEAN_MOTION": 2.13102507,
"ECCENTRICITY": 0.0010592,
"INCLINATION": 64.2868,
"RA_OF_ASC_NODE": 313.8271,
"ARG_OF_PERICENTER": 272.698,
"MEAN_ANOMALY": 87.1931,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 52984,
"REV_AT_EPOCH": 3111,
"BSTAR": 0,
"MEAN_MOTION_DOT": -4.6e-7,
"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.
| Name | COSMOS 2557 [GLONASS-K] |
| Operator | Aerospace Defence Forces / GLONASS Information-Analytic CenterHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree |
| Country | |
| Launch date | |
| Launch mass (kg) | 974 |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Mission purpose | — |
| Object class |
| Orbital regime |
| Status |