 A color drawing of a Zond L1 spacecraft | |
| Mission type | Orbital test flight Lunar flyby (failed) |
|---|---|
| Operator | Soviet space program |
| COSPAR ID | 1967-032A |
| SATCAT no. | 2745 |
| Mission duration | 2 days |
| Spacecraft properties | |
| Spacecraft | Zond L1P No.3 |
| Spacecraft type | Soyuz 7K-L1P |
| Manufacturer | OKB-1 |
| Launch mass | 5375 kg [1] |
| Start of mission | |
| Launch date | 8 April 1967, 09:07:00 GMT |
| Rocket | Proton-K/D |
| Launch site | Baikonur 81/23 |
| Contractor | OKB-1 |
| End of mission | |
| Disposal | Launch failure |
| Decay date | 10 April 1967 |
| Orbital parameters | |
| Reference system | Geocentric[1] |
| Regime | Highly elliptical Earth |
| Periapsis altitude | 183 km |
| Apoapsis altitude | 223 km |
| Inclination | 51.6° |
| Period | 88.5 minutes |
| Epoch | 8 April 1967 |
Kosmos 154 (Russian: Космос 154 meaning Cosmos 154), also known as Zond No.3P, was a Soviet test spacecraft launched from the Baikonur aboard a Proton-K rocket. It was a prototype Soyuz 7K-L1 launched by Proton. It was an uncrewed precursor to the Zond series.[1]