Norad ID: 2501
| Spacetrack Directory Name | MOLNIYA 1-4 |
| Orbit launches |
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| Deorbitation date |
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| Days in orbit | 692 |
| Country/organisation of origin | Commonwealth of Independent States (former USSR) (CIS) |
| Starting point | TYMSC (Baikonur Cosmodrome, Kazakhstan) |
MOLNIYA 1-4, 2501 was a payload satellite owned by OKB-10 (CIS) that was launched on Thu, 20 Oct 1966 UTC via an MOLNIYA 8K78 launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). Payloads include a variety of satellites, spacecraft, and rockets equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.