The Complete Book of Spaceflight: From Apollo 1 to Zero Gravity

132 Explorer
Launch
Explorer Spacecraft
Explorer/aka Date Vehicle Site Orbit Mass (kg)
1 Feb. 1, 1958 Juno 1 Cape Canaveral 358 × 2,550 × 33° 5
2 Mar. 5, 1958 Juno 1 Cape Canaveral Failed to reach orbit 5
3 Mar. 26, 1958 Juno 1 Cape Canaveral 186 × 2,799 × 33° 5
4 Jul. 26, 1958 Jupiter Cape Canaveral 263 × 2,213 × 50° 8
5 Aug. 24, 1958 Juno 1 Cape Canaveral Failed to reach orbit 17
6 Aug. 7, 1959 Thor-Able Cape Canaveral 237 × 41,900 × 47° 64
7 Oct. 13, 1959 Juno 2 Cape Canaveral 573 × 1,073 × 50° 42
8 Nov. 3, 1960 Juno 2 Cape Canaveral 417 × 2,288 × 50° 41
9 Feb. 16, 1961 Scout X-1 Wallops Island 545 × 2,225 × 39° 7
10 Mar. 25, 1961 Delta Cape Canaveral Highly elliptical 35
11 Met. Sat 1 Apr. 27, 1961 Juno 2 Cape Canaveral 486 × 1,786 × 29° 37
12 EPE-1 Aug. 16, 1961 Delta Cape Canaveral 790 × 76,620 × 33° 38
13 Met. Sat 2 Aug. 25, 1961 Scout X-1 Wallops Island Wrong orbit 86
14 EPE-2 Oct. 2, 1962 Delta A Cape Canaveral 2,601 × 96,189 × 43° 40
15 EPE-3 Oct. 27, 1962 Delta A Cape Canaveral 300 × 17,438 × 18° 44
16 Met. Sat 3 Dec. 16, 1962 Scout X-3 Wallops Island 744 × 1,159 × 52° 100
17 AE 1 Apr. 5, 1963 Delta B Cape Canaveral 254 × 891 × 57° 185
18 IMP-1 Nov. 26, 1963 Delta C Cape Canaveral 192 × 197,616 × 33° 62
19 ADE 1 Dec. 19, 1963 Scout X-4 Vandenberg 597 × 2,391 × 79° 7
20 IE Aug. 25, 1964 Delta C Cape Canaveral 855 × 1,001 × 80° 44
21 IMP-2 Oct. 4, 1964 Delta C Cape Canaveral 191 × 95,590 × 34° 62
22 BE 2 Oct. 9, 1964 Scout X-4 Vandenberg 872 × 1,053 × 80° 52
23 Met. Sat. 4 Nov. 6, 1964 Scout X-4 Wallops Island 463 × 980 × 52° 134
24 ADE 2 Nov. 21, 1964 Scout X-4 Wallops Island 530 × 2,498 × 81° 9
25 Injun 4 Nov. 21, 1964 Scout X-4 Wallops Island 524 × 2,349 × 81° 40
26 EPE-4 Dec. 21, 1964 Delta C Cape Canaveral 284 × 10,043 × 20° 46
27 BE 3 Apr. 29, 1965 Scout X-4 Wallops Island 932 × 1,309 × 41° 60
28 IMP-3 May 29, 1965 Delta C Cape Canaveral 229 × 261,206 × 31° 58
29 GEOS 1 Nov. 6, 1965 Delta E Cape Canaveral 1,114 × 2,273 × 59° 175
30 Solrad 8 Nov. 19, 1965 Scout X-4 Wallops Island 667 × 871 × 60° 57
31 DME Nov. 29, 1965 Thor Agena A Vandenberg 502 × 2,857 × 80° 99
32 AE 2 May 25, 1966 Delta C Cape Canaveral 282 × 2,723 × 65° 225
33 IMP-4 Jul. 1, 1966 Delta E Cape Canaveral 85,228 × 481,417 × 41° 93
34 IMP-6 May 24, 1967 Delta E Vandenberg 242 × 214,379 × 67° 75
35 IMP-5 Jul. 19, 1967 Delta E Cape Canaveral N/A 104
36 GEOS 2 Jan. 11, 1968 Delta E Vandenberg 1,079 × 1,572 × 106° 209
37 Solrad 9 Mar. 5, 1968 Scout B Wallops Island 353 × 433 × 59° 198
38 RAE 1 Jul. 4, 1968 Delta J Vandenberg 5,835 × 5,861 × 121° 190
39 ADE 3 Aug. 8, 1968 Scout B Vandenberg 670 × 2,583 × 81° 9
40 Injun 5 Aug. 8, 1968 Scout B Vandenberg 677 × 2,494 × 81° 70
41 IMP-7 Jun. 21, 1969 Delta E Vandenberg 80,374 × 98,159 × 86° 174