| Mission type | Venus flyby |
|---|---|
| Operator | OKB-1 |
| Harvard designation | 1962 Alpha Phi 1 |
| COSPAR ID | 1962-045A |
| SATCAT no. | 389 |
| Mission duration | Launch failure |
| Spacecraft properties | |
| Spacecraft type | 2MV-2 |
| Manufacturer | OKB-1 |
| Launch mass | 6,500 kilograms (14,300 lb) |
| Start of mission | |
| Launch date | 12 September 1962, 00:59:13 UTC |
| Rocket | Molniya 8K78 s/n T103-14 |
| Launch site | Baikonur 1/5 |
| End of mission | |
| Decay date | 14 September 1962 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth (achieved) Heliocentric (intended) |
| Semi-major axis | 6,550 kilometres (4,070 mi) |
| Eccentricity | 0.02977 |
| Perigee altitude | 163 kilometres (101 mi) |
| Apogee altitude | 195 kilometres (121 mi) |
| Inclination | 64.8 degrees |
| Period | 88.07 minutes |
| Epoch | 1962-09-11, 21:40:00 UTC[1] |
Venera 2MV-2 No.1,[2][3] also known as Sputnik 21 in the West, was a Soviet spacecraft, which was launched in 1962 as part of the Venera programme, and was intended to make a flyby of Venus.[4] Due to a problem with the rocket which launched it, it failed to leave low Earth orbit, and reentered the atmosphere a few days later.[5] It was the second Venera 2MV-2 spacecraft, both of which failed to leave Earth orbit.[3]
- ^ "Sputnik 21". NASA Space Science Data Coordinated Archive. Retrieved 2 May 2018.
- ^ Cite error: The named reference
LLwas invoked but never defined (see the help page). - ^ a b Krebs, Gunter. "Venera (2c) (2MV-2 #1)". Gunter's Space Page. Retrieved 28 July 2010.
- ^ Zak, Anatoly. "Russia's unmanned missions to Venus". RussianSpaecWeb. Retrieved 28 July 2010.
- ^ Wade, Mark. "Venera". Encyclopedia Astronautica. Archived from the original on 7 January 2012. Retrieved 28 July 2010.