Spacecraft Organization Date Type Status Notes Image Ref Venera 13 SAS bus 1 March 1982 flyby success deployed lander and then acted as communications relay 1981-106A descent craft 1 March 1982 lander success survived on surface for 127 minutes 1981-106D Venera 14 SAS identical to Venera 13 bus 5 March 1982 flyby success deployed lander and then acted as communications relay 1981-110A descent craft 5 March 1982 lander success survived on surface for 57 minutes 1981-110D Venera 15 SAS 1983–1984 orbiter success radar mapping 1983-053A Venera 16 SAS 1983–1984 orbiter success radar mapping; identical to Venera 15 1983-054A Vega 1 SAS 11 June 1985 flyby success went on to fly by Halley's comet 1984-125A lander failure instruments deployed prematurely 1984-125E atmospheric balloon success floated at an altitude of about 54 km and transmitted for around 46 hours 1984-125F Vega 2 SAS 15 June 1985 flyby success went on to fly by Halley's comet 1984-128A lander success transmitted from surface for 56 minutes 1984-128E atmospheric balloon success floated at an altitude of about 54 km and transmitted for around 46 hours 1984-128F Galileo NASA 10 February 1990 flyby success gravity assist en route to Jupiter; minimum distance 16,000 km [14] Magellan NASA 10 August 1990 – 12 October 1994 orbiter success global radar mapping 1989-033B [15] Cassini NASA/ ESA/ ASI 26 April 1998 flyby success gravity assist en route to Saturn 1997-061A [16] 24 June 1999