Venera 2

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Venera 2
Mission type Venus flyby[1]
Operator OKB-1
COSPAR ID 1965-091A
SATCAT no. 1730
Mission duration 3 months and 15 days
Spacecraft properties
Spacecraft 3MV-4 No.4
Manufacturer OKB-1
Launch mass 963 kilograms (2,123 lb)
Start of mission
Launch date 12 November 1965, 05:02 (1965-11-12UTC05:02Z) UTC[2]
Rocket Molniya M
Launch site Baikonur 31/6
End of mission
Last contact February 1966 (1966-03)
Shortly before flyby
Orbital parameters
Reference system Geocentric
Perigee 205 kilometres (127 mi)
Apogee 315 kilometres (196 mi)
Inclination 51.8°
Period 89.71 minutes
Flyby of Venus
Closest approach 27 February 1966, 02:52 UTC
Distance ~24,000 kilometres (15,000 mi)

Venera 2 (Russian: Венера-2 meaning Venus 2), also known as 3MV-4 No.4 was a Soviet spacecraft intended to explore Venus. A 3MV-4 spacecraft launched as part of the Venera programme, it failed to return data after flying past Venus.

Venera 2 was launched by a Molniya carrier rocket, flying from Site 31/6 at the Baikonur Cosmodrome.[2] The launch occurred at 05:02 UTC on 12 November 1965, with the first three stages placing the spacecraft and Blok-L upper stage into a low Earth parking orbit before the Blok-L fired to propel Venera 2 into heliocentric orbit bound for Venus.

The Venera 2 spacecraft was equipped with cameras, as well as a magnetometer, solar and cosmic x-ray detectors, piezoelectric detectors, ion traps, a Geiger counter and receivers to measure cosmic radio emissions.[3] The spacecraft made its closest approach to Venus at 02:52 UTC on 27 February 1966, at a distance of 24,000 kilometres (15,000 mi).[4]

During the flyby, all of Venera 2's instruments were activated, requiring that radio contact with the spacecraft be suspended. The probe was to have stored data using onboard recorders, and then transmitted it to Earth once contact was restored. Following the flyby the spacecraft failed to reestablish communications with the ground. It was declared lost on 4 March.[3] An investigation into the failure determined that the spacecraft had overheated due to a radiator malfunction.[3]

See also[edit]


  1. ^ Krebs, Gunter. "Interplanetary Probes". Gunter's Space Page. Retrieved 11 April 2013. 
  2. ^ a b McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 11 April 2013. 
  3. ^ a b c Siddiqi, Asif A. (2002). "1965". Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958-2000 (PDF). Monographs in Aerospace History, No. 24. NASA History Office. pp. 47–52. 
  4. ^ "Venera 2". US National Space Science Data Centre. Retrieved 11 April 2013.