spacecraft                     destination           launched   closest approach                     time elapsed
0   pioneer 10                         jupiter       3 march 1972    3 december 1973    641 days (1 yr , 9 mos , 1 d)
1   pioneer 11                         jupiter       6 april 1973    4 december 1974    608 days (1 yr , 7 mo , 29 d)
2   pioneer 11                          saturn       6 april 1973   1 september 1979   2340 days (6 yr , 4 mo , 27 d)
3       mars 4                            mars       21 july 1973   10 february 1974    205 days (6 months , 21 days)
4       mars 6                            mars      5 august 1973      12 march 1974     220 days (7 months , 8 days)
5       mars 7                            mars      9 august 1973       9 march 1974      213 days (7 months , 1 day)
6   mariner 10                           venus    3 november 1973    5 february 1974      95 days (3 months , 3 days)
7   mariner 10                         mercury    3 november 1973      29 march 1974    147 days (4 months , 27 days)
8   mariner 10                         mercury    3 november 1973  21 september 1974   323 days (10 months , 19 days)
9   mariner 10                         mercury    3 november 1973      16 march 1975    499 days (1 yr , 4 mo , 14 d)
10   voyager 2                         jupiter     20 august 1977        9 july 1979   689 days (1 yr , 10 mo , 20 d)
11   voyager 2                          saturn     20 august 1977      5 august 1981  1447 days (3 yr , 11 mo , 17 d)
12   voyager 2                          uranus     20 august 1977    24 january 1986    3080 days (8 yr , 5 mo , 5 d)
13   voyager 2                         neptune     20 august 1977     25 august 1989       4389 days (12 yr , 6 days)
14   voyager 1                         jupiter   5 september 1977       5 march 1979     547 days (1 yr , 6 mo , 1 d)
15   voyager 1                          saturn   5 september 1977   12 november 1980    1165 days (3 yr , 2 mo , 8 d)
16         ice  comet 21p / giacobini - zinner     12 august 1978  11 september 1985          2588 days (7 yr , 1 mo)
17         ice               comet 1p / halley     12 august 1978      28 march 1986   2786 days (7 yr , 7 mo , 17 d)
18   venera 11                           venus   9 september 1978   25 december 1978    108 days (3 months , 17 days)
19   venera 12                           venus  14 september 1978   19 december 1978      97 days (3 months , 6 days)

Table as JSON:
{"spacecraft":{"0":"pioneer 10","1":"pioneer 11","2":"pioneer 11","3":"mars 4","4":"mars 6","5":"mars 7","6":"mariner 10","7":"mariner 10","8":"mariner 10","9":"mariner 10","10":"voyager 2","11":"voyager 2","12":"voyager 2","13":"voyager 2","14":"voyager 1","15":"voyager 1","16":"ice","17":"ice","18":"venera 11","19":"venera 12"},"destination":{"0":"jupiter","1":"jupiter","2":"saturn","3":"mars","4":"mars","5":"mars","6":"venus","7":"mercury","8":"mercury","9":"mercury","10":"jupiter","11":"saturn","12":"uranus","13":"neptune","14":"jupiter","15":"saturn","16":"comet 21p \/ giacobini - zinner","17":"comet 1p \/ halley","18":"venus","19":"venus"},"launched":{"0":"3 march 1972","1":"6 april 1973","2":"6 april 1973","3":"21 july 1973","4":"5 august 1973","5":"9 august 1973","6":"3 november 1973","7":"3 november 1973","8":"3 november 1973","9":"3 november 1973","10":"20 august 1977","11":"20 august 1977","12":"20 august 1977","13":"20 august 1977","14":"5 september 1977","15":"5 september 1977","16":"12 august 1978","17":"12 august 1978","18":"9 september 1978","19":"14 september 1978"},"closest approach":{"0":"3 december 1973","1":"4 december 1974","2":"1 september 1979","3":"10 february 1974","4":"12 march 1974","5":"9 march 1974","6":"5 february 1974","7":"29 march 1974","8":"21 september 1974","9":"16 march 1975","10":"9 july 1979","11":"5 august 1981","12":"24 january 1986","13":"25 august 1989","14":"5 march 1979","15":"12 november 1980","16":"11 september 1985","17":"28 march 1986","18":"25 december 1978","19":"19 december 1978"},"time elapsed":{"0":"641 days (1 yr , 9 mos , 1 d)","1":"608 days (1 yr , 7 mo , 29 d)","2":"2340 days (6 yr , 4 mo , 27 d)","3":"205 days (6 months , 21 days)","4":"220 days (7 months , 8 days)","5":"213 days (7 months , 1 day)","6":"95 days (3 months , 3 days)","7":"147 days (4 months , 27 days)","8":"323 days (10 months , 19 days)","9":"499 days (1 yr , 4 mo , 14 d)","10":"689 days (1 yr , 10 mo , 20 d)","11":"1447 days (3 yr , 11 mo , 17 d)","12":"3080 days (8 yr , 5 mo , 5 d)","13":"4389 days (12 yr , 6 days)","14":"547 days (1 yr , 6 mo , 1 d)","15":"1165 days (3 yr , 2 mo , 8 d)","16":"2588 days (7 yr , 1 mo)","17":"2786 days (7 yr , 7 mo , 17 d)","18":"108 days (3 months , 17 days)","19":"97 days (3 months , 6 days)"}}