Kosmos 419
| Mission type | Mars orbiter |
|---|---|
| Operator | Soviet space program |
| COSPAR ID | 1971-042A |
| SATCAT no. | 5221 |
| Mission duration | 2 days |
| Spacecraft properties | |
| Spacecraft type | 3MS No. 170 |
| Manufacturer | NPO Lavochkin |
| Launch mass | 4,650 kg (10,250 lb) |
| Start of mission | |
| Launch date | 10 May 1971, 16:58:42 UTC |
| Rocket | Proton-K/D |
| Launch site | Baikonur 81/23 |
| Contractor | Khrunichev |
| End of mission | |
| Disposal | Launch failure |
| Decay date | 12 May 1971 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 134 km |
| Apogee altitude | 187 km |
| Inclination | 51.5° |
| Period | 87.7 min |
Kosmos 419 (Russian: Космос 419 meaning Cosmos 419), also known as 3MS No.170 was a failed Soviet spacecraft intended to visit Mars. The spacecraft was launched on 10 May 1971, however, due to an upper stage malfunction, it failed to depart low Earth orbit.