Explorer-Program (original) (raw)
Explorer
Name
Date
S
LS
Launch Vehicle
Mass (kg)
Orbit
Remarks
1958
Explorer 1
01.02.1958
CC
14 kg
359 km � 2542 km, 33.18�
Explorer 2
05.03.1958
F
CC
14 kg
-
Explorer 3
26.03.1958
CC
14 kg
195 km � 2810 km, 33.38�
Explorer 4
26.07.1958
CC
17 kg
258 km � 2233 km, 50.40�
Explorer 5
24.08.1958
F
CC
17 kg
1959
Explorer (6)
16.07.1959
F
CC
41 kg
-
Explorer 6
07.08.1959
CC
64 kg
250 km � 42327 km, 46.95�
Explorer 7
13.10.1959
CC
41 kg
560 km � 1087 km, 50.27�
1960
Explorer (8)
23.03.1960
F
CC
41 kg
-
Explorer 8
03.11.1960
CC
41 kg
416 km � 2286 km, 49.98�
Explorer (9)
04.12.1960
F
WI
36 kg
-
1961
Explorer 9
16.02.1961
WI
36 kg
635 km � 2581 km, 38.86�
Explorer (10)
25.02.1961
F
CC
34 kg
-
Explorer 10
25.03.1961
CC
35 kg
221 km � 181000 km, 33.00�
Explorer 11
27.04.1961
CC
43 kg
497 km � 1777 km, 28.76�
Explorer (12)
24.05.1961
F
CC
41 kg
-
Explorer (12)
30.06.1961
F
WI
85 kg
-
Explorer 12
16.08.1961
CC
38 kg
457 km � 77170 km, 33.43�
Explorer 13
25.08.1961
P
WI
85 kg
125 km � 1164 km, 37.70�
Explorer 14
02.10.1961
CC
40 kg
915 km � 96959 km, 33.60�
1962
Explorer 15
27.10.1962
CC
45 kg
312 km � 17619 km, 17.97�
Explorer 16
16.12.1962
WI
101 kg
759 km � 1170 km, 51.99�
1963
Explorer 17
03.04.1963
CC
184 kg
246 km � 914 km, 57.61�
Explorer 18
27.11.1963
CC
62 kg
2072 km � 194080 km, 35.29�
Explorer 19
19.12.1963
Va
7 kg
588 km � 2389 km, 78.60�
1964
Explorer (20)
19.03.1964
F
CC
120 kg
-
Explorer 20
25.08.1964
Va
44 kg
869 km � 1018 km, 79.90�
Explorer 21
04.10.1964
CC
62 kg
666 km � 94526 km, 33.82�
Explorer 22
10.10.1964
Va
53 kg
886 km � 1079 km, 79.69�
Explorer 23
06.11.1964
WI
134 kg
464 km � 978 km, 51.96�
Explorer 24
21.11.1964
Va
9 kg
542 km � 2480 km, 81.35�
with IE B
Explorer 25
40 kg
528 km � 2492 km, 81.35�
with AD B
Explorer 26
21.12.1964
CC
46 kg
310 km � 26202 km, 20.14�
1965
Explorer 27
29.04.1965
WI
60 kg
936 km � 1316 km, 41.18�
Explorer 28
29.05.1965
CC
59 kg
195 km � 264252 km, 33.86�
Explorer 29
06.11.1965
CC
175 kg
1117 km � 2273 km, 59.38�
Explorer 30
19.11.1965
WI
57 kg
693 km � 898 km, 59.71�
Explorer 31
29.11.1965
Va
98 kg
505 km � 2983 km, 79.82�
with Alouette 2
1966
Explorer 32
25.05.1966
CC
225 kg
283 km � 2718 km, 64.67�
Explorer 33
01.07.1966
CC
79527 km � 477380 km, 21.66�
lunar orbit planned
1967
Explorer 34
24.05.1967
Va
74 kg
242 km � 214382 km, 67.17�
Explorer 35
19.07.1967
CC
lunar orbit
1968
Explorer 36
11.01.1968
Va
209 kg
1084 km � 1573 km, 105.79�
Explorer 37
05.03.1968
WI
90 kg
509 km � 882 km, 59.42�
Explorer 38
04.07.1968
Va
188 kg
5840 km � 5862 km, 120.84�
Explorer 39
08.08.1968
Va
9 kg
684 km � 2514 km, 80.69�
with IE C
Explorer 40
71 kg
679 km � 2531 km, 80.66�
with AD C
1969
Explorer 41
21.06.1969
Va
79 kg
640 km � 176219 km, 87.13�
1970
Explorer 42
12.12.1970
SM
163 kg
534 km � 573 km, 3.03�
1971
Explorer 43
13.03.1971
CC
1569 km � 203825 km, 30.20�
Explorer 44
08.07.1971
WI
118 kg
435 km � 631 km, 51.05�
Explorer 45
15.11.1971
SM
52 kg
234 km � 26780 km, 3.56�
1972
Explorer 46
13.08.1972
WI
90 kg
494 km � 810 km, 37.70�
Explorer 47
23.09.1972
CC
390 kg
201100 km � 235600 km, 17.20�
Explorer 48
15.11.1972
SM
186 kg
444 km � 632 km, 1.90�
1973
Explorer 49
10.06.1973
CC
1053 km � 1064 km, 55.7�, lunar orbit
lunar orbit
Explorer 50
26.10.1973
CC
81 kg
215092 km � 215092 km, 19.70�
Explorer 51
16.12.1973
Va
658 kg
152 km � 4074 km, 68.07�
1974
Explorer 52
03.06.1974
Va
27 kg
4431 km � 122973 km, 88.33�
1975
Explorer 53
07.05.1975
SM
195 kg
502 km � 509 km, 3.00�
Explorer 54
06.10.1975
Va
676 kg
135 km � 3569 km, 90.08�
Explorer 55
20.11.1975
CC
721 kg
142 km � 2819 km, 19.68�
Explorer (56)
06.12.1975
F
Va
40 kg
--
with DAD B
Explorer (57)
9 kg
-
with DAD A
1976
1977
Explorer 56
22.10.1977
CC
340 kg
763 km � 137531 km, 30.38�
with ISEE 2 (not part of Explorer program)
1978
Explorer 57
26.01.1978
CC
1479 kg
669 kg
30285 km � 41296 km, 34.3�
Explorer 58
26.04.1978
Va
134 kg
610 km � 633 km, 97.6�
Explorer 59
12.08.1978
CC
469 kg
Sun-Earth Lagrange point L1 halo orbit, later heliocentric
1979
Explorer 60
18.02.1979
WI
149 kg
547 km � 659 km, 54.93�
Explorer 61
30.10.1979
Va
181 kg
347 km � 541 km, 96.7�
1980
1981
Explorer 62
03.08.1981
P
Va
400 kg
558 km � 23300 km, 89.92�
with DE 2
Explorer 63
400 kg
299 km � 990 km, 89.99�
with DE 1
Explorer 64
06.10.1981
Va
437 kg
481 km � 486 km, 97.69�
with OSCAR 9
1982
1983
1984
Explorer 65
16.08.1984
CC
240 kg
1108 km � 49675 km, 4.84�
with IRM, UKS, Solar Cell Experiment
1985
1986
1987
1988
1989
Explorer 66
18.11.1989
Va
2250 kg
872 km � 886 km, 99.0�
1990
1991
1992
Explorer 67
07.06.1992
CC
3256 kg
510 km � 524 km, 28.4�
Explorer 68
03.02.1992
Va
158 kg
514 km � 690 km, 81.67�
1993
1994
1995
Explorer 69
30.12.1995
CC
3045 kg
564 km � 583 km, 22.98�
1996
Explorer 70
21.08.1996
Va
180 kg
351 km � 4164 km, 83.00�
1997
Explorer 71
05.08.1997
CC
765 kg
Sun-Earth Lagrange point L1 halo orbit
1998
Explorer 72
26.02.1998
Va
132 kg
529 km � 581 km, 97.7�
with Batsat
Explorer 73
02.04.1998
Va
225 kg
597 km � 642 km, 97.80�
Explorer 74
06.12.1998
WI
283 kg
638 km � 650 km, 69.90�
1999
Explorer 75
05.03.1999
Va
275 kg
539 km � 592 km, 97.53�
Mission failure
Explorer 76
18.05.1999
Va
121 kg
540 km � 553 km, 97.7�
with MUBLCOM
Explorer 77
24.06.1999
CC
1360 kg
753 km � 770 km, 24.98�
2000
Explorer 78
25.03.2000
Va
494 kg
1000 km � 45922 km, 90�
Explorer 79 (MoO)
09.10.2000
Kw
124 kg
598 km � 641 km, 1.9�
2001
Explorer 80
30.06.2001
CC
800 kg
Sun-Earth Lagrange point L2 halo orbit
2002
Explorer 81
05.02.2002
CC
293 kg
587 km � 600 km, 38�
(Int)
17.10.2002
Ba
4100 kg
10.000 km � 153.000 km, 51.6�
Participation on INTEGRAL
2003
Explorer 82
13.01.2003
Va
60 kg
586 km � 594 km, 94.0�
with ICESAT
Explorer 83
28.04.2003
CC
312 kg
690 km � 702 km, 29�
2004
Explorer 84
Swift (MIDEX 3, Neil Gehrels Swift Observatory)
20.11.2004
CC
1331 kg
600 km � 600 km, 19�
2005
(MoO)
10.07.2005
Ka
1700 kg
570 km � 570 km, 31.3�
Instrument on Astro E2
2006
(MoO)
28.06.2006
Va
1111 km � 37594, 62.4�
Payload on Trumpet 4
2007
Explorer 85
THEMIS P1 (MIDEX 5A) → ARTEMIS P1
17.02.2007
CC
100 kg
1.6 Re � 34.0 Re, 3.9�; later lunar orbit
with THEMIS P2, P3, P4, P5
Explorer 86
THEMIS P2 (MIDEX 5B) → ARTEMIS P2
100 kg
1.2 Re x 19.9 Re, 9.8�; later lunar orbit
with THEMIS P1, P3, P4, P5
Explorer 87
100 kg
1.6 Re � 11.6 Re, 7�
with THEMIS P1, P2, P4, P5
Explorer 88
100 kg
1.6 Re � 11.6 Re, 7�
with THEMIS P1, P2, P3, P5
Explorer 89
100 kg
1.3 Re � 13.1 Re, 12�
with THEMIS P1, P2, P3, P4
Explorer 90
25.04.2007
Va
200 kg
585 km � 600 km, 97.79�
2008
(MoO)
13.03.2008
Va
1112 km � 37580 km, 63.6�
Payload on Trumpet 5
(MoO)
16.04.2008
Kw
395 kg
400 km � 850 km, 13�
Instruments on C/NOFS
Explorer 91
19.10.2008
Kw
105 kg
12260 km � 304347 km, 21.38�
2009
Explorer 92
WISE (MIDEX 6) (ex NGSS) → NEOWISE
14.12.2009
Va
532 kg
526 km � 530 km, 97.50�
2010
2011
2012
Explorer 93
13.06.2012
Kw
360 kg
525 km � 525 km, 6�
2013
Explorer 94
28.06.2013
Va
236 kg
621 km � 662 km, 97.90�
2014
2015
2016
(MoO)
07.02.2016
Ta
2700 kg
565 km � 580 km, 31.01�
Instrument on Astro H
2017
(MoO)
03.05.2017
CC
372 kg
400 km � 400 km, 51.6�
Instrument on ISS
2018
(MoO)
25.01.2018
Ko
4423 kg
35783 km � 35792 km, 0.02�
Instrument on SES 14
Explorer 95
18.04.2018
CC
365 kg
17 Re � 59 Re
2019
Explorer 96
11.10.2019
CC
288 kg
575 km � 575 km, 27�
2020
2021
Explorer 97
09.12.2021
CCK
330 kg
588 km � 603 km, 0.2�
2022
2023
(Int)
01.07.2023
CC
2160 kg
Sun-Earth Lagrange point L2 halo orbit
Participation in Euclid
(MoO)
06.09.2023
Ta
2700 kg
567 km � 580 km, 31.00�
Instrument on XRISM
(MoO)
10.11.2023
CC
400 km � 400 km, 51.6�
Instrument on ISS
2024
2025
Explorer 102
12.03.2025
Va
502 kg
Explorer 98
40 kg
Explorer 99
40 kg
Explorer 101
40 kg
Explorer 100
40 kg
Explorer 103 (MoO)
15.03.2025
Va SLC-4E
Explorer 104 (MoO)
Explorer 105 (MoO)
Explorer 106
23.07.2025
Va SLC-4E
~200 kg
Explorer 107
~200 kg
Planned:
Explorer
Name
Date
S
LS
Launch Vehicle
Mass (kg)
Orbit
Remarks
2025
(MoO)
xx.xx.2025
CC
(MoO)
(MoO)
(MoO)
(MoO)
(MoO)
2026
(MoO)
2026
Ka
Instrument on Solar C
2027
xx.xx.2027
CC
xx.xx.2027
?
?
2028
xx.xx.202x
?
?
2029
(MoO)
2029
Ko
Ariane-62 (baselined)
Instrument on ARIEL
2030
xx.xx.2030
?
?
TBD
Cancelled or status unclear:
Explorer
Name
Date
S
LS
Launch Vehicle
Mass (kg)
Orbit
Remarks
cancelled 1966 ?
Va
70 kg
cancelled 1966 ?
Va
70 kg
cancelled 197x ?
WI
Scout-B ?
36 kg
cancelled
Va
109 kg
with ICESAT
cancelled
CC
159 kg
with DSP 22
cancelled
CC
cancelled 2003
Va
cancelled 2012
CC
267 kg