List of Thor and Delta launches (1970–79)

Main page: Engineering:List of Thor and Delta launches

Between 1970 and 1979, there were 117 Thor missiles launched, of which 108 were successful, giving a 92.3% success rate.

NASA used it to launch its own satellites, as well as to launch satellites for foreign governments and companies.

## Contents

* 1 Launch statistics
* 1.1 Rocket configurations
* 1.2 Launch sites
* 1.3 Launch outcomes
* 2 1970
* 3 1971
* 4 1972
* 5 1973
* 6 1974
* 7 1975
* 8 1976
* 9 1977
* 10 1978
* 11 1979
* 12 See also

## Launch statistics

### Rocket configurations

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### Launch sites

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### Launch outcomes

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## 1970

There were 19 Thor missiles launched in 1970. 18 of the 19 launches were successful, giving a 94.7% success rate.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
|
|
|
|
|
|

1970-01-15
00:16  | Delta M | Delta 75
Thor 557  | CCAFS SLC-17A  | Intelsat 3-6 | Communication satellite  | GTO  | Success  |
1970-01-23
11:52  | Delta N6 | Delta 76
Thor 542  | VAFB SLC-2W  | ITOS 1 / Oscar 5  | Weather Satellite / Amateur radio satellite | LEO / SSO  | Success  |
1970-02-04
02:59  | Thorad SLV-2G Agena-D  | Thor 534
Agena Unknown  | VAFB SLC-2E  | SERT 2  | Technological demonstration satellite  | MEO  | Success  |
1970-02-11
08:40  | Thor Burner 2 | Thor 287  | VAFB SLC-10W  | DMSP-5A-F1 | Military weather satellite  | LEO / SSO  | Success  |
1970-03-04
22:15  | Thorad SLV-2H Agena-D  | Thor 551
Agena 1657  | VAFB SLC-3W  | KH-4B (S/N 1109) | Reconnaissance  | LEO  | Success  |
1970-03-20
23:46  | Delta M | Delta 77
Thor 558  | CCAFS SLC-17A  | NATO 1  | Military communication satellite  | GTO  | Success  |
1970-03-27
07:37  | Thor DSV-2J  | Thor 152  | Johnston LE-1  |  | ASAT test  | Suborbital  | Success  |
1970-04-08
08:17  | Thorad SLV-2G Agena-D  | Thor 553
Agena 6223  | VAFB SLC-2E  | Nimbus 4 / TOPO-1  | Weather satellite / Geodesic research satellite  | LEO / SSO  | Success  |
1970-04-23
00:46  | Delta M | Delta 78
Thor 559  | CCAFS SLC-17A  | Intelsat 3-7 | Communication satellite  | GTO  | Success  |
1970-04-24
| Thor DSV-2J  | Thor 225  | Johnston LE-1  |  | Satellite Inspection test  | Suborbital  | Failure  | Thor rocket collided with the satellite.
1970-05-20
21:35  | Thorad SLV-2H Agena-D  | Thor 555
Agena 1657  | VAFB SLC-3W  | KH-4B (S/N 1110) | Reconnaissance  | LEO  | Success  |
1970-07-23
01:25  | Thorad SLV-2H Agena-D  | Thor 556
Agena 1654  | VAFB SLC-3W  | KH-4B (S/N 1111) | Reconnaissance  | LEO  | Success  |
1970-07-23
23:23  | Delta M | Delta 79
Thor 563  | CCAFS SLC-17A  | Intelsat 3-8 | Communication satellite  | GTO  | Success  |
1970-08-19
12:11  | Delta M | Delta 80
Thor 561  | CCAFS SLC-17A  | Skynet-1B  | Military communication satellite  | GTO  | Success  |
1970-08-26
10:01  | Thorad SLV-2G Agena-D  | Thor 535
Agena 2736  | VAFB SLC-1W  | Ferret 15 (OPS 8329)  | ELINT  | LEO  | Success  |
1970-09-03
08:39  | Thor Burner 2 | Thor 288  | VAFB SLC-10W  | DMSP-5A-F2 | Military weather satellite  | LEO / SSO  | Success  |
1970-09-24
12:54  | Thor DSV-2J  | Thor 271  | Johnston LE-2  |  | Astronomy research flight  | Suborbital  | Success  |
1970-11-18
21:29  | Thorad SLV-2H Agena-D  | Thor 552
Agena 1658  | VAFB SLC-3W  | KH-4B (S/N 1112) | Reconnaissance  | LEO  | Success  |
1970-12-11
11:35  | Delta N6 | Delta 81
Thor 546  | VAFB SLC-2W  | NOAA-1  | Weather Satellite  | LEO / SSO  | Success  |

## 1971

There were 14 Thor missiles launched in 1971. 12 of the 14 launches were successful, giving an 85.7% success rate.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
|
|
|
|
|
|

1971-02-03
01:41  | Delta M | Delta 82
Thor 560  | CCAFS SLC-17A  | NATO 2  | Military communication satellite  | GTO  | Success  |
1971-02-17
03:52  | Thor Burner 2 | Thor 249  | VAFB SLC-10W  | DMSP-5A-F3 / Calsphere 3A / Calsphere 4 / Calsphere 5  | Military weather satellite / Technology demonstration (x3)  | LEO / SSO  | Success  |
1971-02-17
20:04  | Thorad SLV-2H Agena-D  | Thor 537
Agena 1659  | VAFB SLC-3W  | KH-4B (S/N 1113) | Reconnaissance  | LEO  | Failure  | Improper pre-flight procedure caused frozen lubricant to form a plug that resulted in complete turbopump failure 18 seconds after liftoff. The booster lost thrust and impacted the ground not far from the launch complex.
1971-03-13
16:15  | Delta M6 | Delta 83
Thor 562  | CCAFS SLC-17A  | Explorer 43 (IMP-H)  | Magnetosphere research satellite  | HEO  | Success  |
1971-03-24
21:05  | Thorad SLV-2H Agena-D  | Thor 538
Agena 1660  | VAFB SLC-3W  | KH-4B (S/N 1114) | Reconnaissance  | LEO  | Success  |
1971-04-01
02:53  | Delta E1 | Delta 84
Thor 491  | VAFB SLC-2E  | ISIS-II | Ionosphere research satellite  | LEO / SSO  | Success  |
1971-06-08
14:00  | Thor Burner 2 | Thor 210  | VAFB SLC-10W  | SESP-1 (P70-1) | Technological demonstration satellite  | LEO  | Success  |
1971-07-16
21:29  | Thorad SLV-2H Agena-D  | Thor 552
Agena 1658  | VAFB SLC-1W  | Ferret 16 (OPS 8373)  | ELINT  | LEO  | Success  |
1971-09-10
21:33  | Thorad SLV-2H Agena-D  | Thor 567
Agena 1662  | VAFB SLC-3W  | KH-4B (S/N 1115) | Reconnaissance  | LEO  | Success  |
1971-09-29
09:50  | Delta N | Delta 85
Thor 565  | CCAFS SLC-17A  | OSO 7 / TTS-4  | Solar observation satellite / Technology demonstration  | LEO, 321×572 km, 93.2 min, i=33.1°, e=0.0184  | Success  | 2nd stage suffered a failure of the attitude control system, however the satellite reached orbit and ground controllers were able to correct its flight path.[1]
1971-10-14
07:51  | Thor Burner 2A | Thor 159  | VAFB SLC-10W  | DMSP-5B-F1 | Military weather satellite  | LEO / SSO  | Success  |
1971-10-17
13:36  | Thorad SLV-2G Agena-D  | Thor 570
Agena Unknown  | VAFB SLC-1W  | ASTEX (P71-2) | Technological demonstration satellite  | LEO  | Success  |
1971-10-21
11:32  | Delta N6 | Delta 86
Thor 572  | VAFB SLC-2E  | ITOS-B  | Weather Satellite  | planned: LEO / SSO | Failure  | 2nd stage oxidizer leak starting at T+20 seconds. The attitude control system ran out of propellant trying to correct the stage's flight path and the launch vehicle reentered the atmosphere and broke up above the Arctic Circle.
1971-12-14
21:13  | Thorad SLV-2G Agena-D  | Thor 568
Agena Unknown  | VAFB SLC-1W  | Poppy (OPS 7898) (x4)  | ELINT  | LEO  | Success  | Final flight of SLV-2G

## 1972

There were 11 Thor missiles launched in 1972. All 11 launches were successful.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
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|
|
|
|
|

1972-01-31
17:20  | Delta L | Delta 87
Thor 564  | VAFB SLC-2E  | HEOS-2  | Magnetosphere research satellite  | HEO  | Success  |
1972-03-12
00:00  | Delta N | Delta 88
Thor 573  | VAFB SLC-2E  | TD-1A | Astronomical research satellite  | LEO / SSO  | Success  |
1972-03-24
08:46  | Thor Burner 2A | Thor 153  | VAFB SLC-10W  | DMSP-5B-F2 | Military weather satellite  | LEO / SSO  | Success  |
1972-04-19
21:43  | Thorad SLV-2H Agena-D  | Thor 569
Agena 1661  | VAFB SLC-3W  | KH-4B (S/N 1116) | Reconnaissance  | LEO  | Success  |
1972-05-25
18:41  | Thorad SLV-2H Agena-D  | Thor 571
Agena 1663  | VAFB SLC-3W  | KH-4B (S/N 1117) | Reconnaissance  | LEO  | Success  | Final flight of Thorad-Agena
Last Corona spacecraft
1972-07-23
18:06  | Delta 904[2] | Delta 89
Thor 574  | VAFB SLC-2W  | Landsat 1 | Earth Resource Technology Satellite  | 917 km LEO, near polar, Sun synchronous.  | Success  | First use of 9 strap-on SRBs. Discovered Landsat Island.
1972-09-23
13:20  | Delta 1604 | Delta 90
Thor 579  | CCAFS SLC-17B  | Explorer 47 (IMP-I)  | Magnetospheric research satellite  | HEO  | Success  | First successful flight of Delta-1000 series.
1972-10-15
17:17  | Delta 300 | Delta 91
Thor 575  | VAFB SLC-2W  | NOAA-2 / Oscar 6  | Weather Satellite / Amateur Radio Satellite  | LEO / SSO  | Success  |
1972-11-09
03:43  | Thor Burner 2A | Thor 294  | VAFB SLC-10W  | DMSP-5B-F3 | Military weather satellite  | LEO / SSO  | Success  |
1972-11-10
01:14  | Delta 1914 | Delta 92
Thor 580  | CCAFS SLC-17B  | Anik-A1  | Communication Satellite  | GTO  | Success  |
1972-12-11
07:56  | Delta 900 | Delta 93
Thor 577  | VAFB SLC-2W  | Nimbus-5  | Weather Satellite  | LEO / SSO  | Success  |

## 1973

There were 7 Thor missiles launched in 1973. 6 of the 7 launches were successful, giving an 85.7% success rate.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
|
|
|
|
|
|

1973-04-20
23:47  | Delta 1914 | Delta 94
Thor 583  | CCAFS SLC-17B  | Anik-A2  | Communication Satellite  | GTO  | Success  |
1973-06-10
14:13  | Delta 1913 | Delta 95
Thor 581  | CCAFS SLC-17B  | Explorer 49 (RAE-B)  | Radio astronomy satellite  | Lunar Orbit  | Success  |
1973-07-16
17:10  | Delta 300 | Delta 96
Thor 578  | VAFB SLC-2W  | ITOS-E  | Weather Satellite  | planned: LEO / SSO | Failure  | Hydraulic pump malfunction led to failure of the 2nd stage attitude control system. The booster and payload reentered the atmosphere and broke up.
1973-08-17
04:49  | Thor Burner 2A | Thor 291  | VAFB SLC-10W  | DMSP-5B-F4 | Military weather satellite  | LEO / SSO  | Success  |
1973-10-26
02:26  | Delta 1604 | Delta 97
Thor 582  | CCAFS SLC-17B  | Explorer 50 (IMP-J)  | Magnetospheric research satellite  | HEO  | Success  |
1973-11-06
14:02  | Delta 300 | Delta 98
Thor 576  | VAFB SLC-2W  | NOAA-3  | Weather Satellite  | LEO / SSO  | Success  |
1973-12-16
06:18  | Delta 1900 | Delta 99
Thor 585  | VAFB SLC-2W  | Explorer 51 (AE-C)  | Atmospheric research satellite  | MEO  | Success  |

## 1974

There were 9 Thor missiles launched in 1974. 8 of the 9 launches were successful, giving an 88.9% success rate.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
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|
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|
|

1974-01-19
01:38  | Delta 2313 | Delta 100
Thor 587  | CCAFS SLC-17B  | Skynet-2A  | Military communication satellite  | planned: GTO | Failure  | First flight of the Delta 2000 series. Stage 2 electronics package short circuited (induced by a piece of conductive contaminant shaken loose during launch), leading to loss of control.
1974-03-16
08:00  | Thor Burner 2A | Thor 207  | VAFB SLC-10W  | DMSP-5B-F5 | Military weather satellite  | LEO / SSO  | Success  |
1974-04-13
21:33  | Delta 2914 | Delta 101
Thor 588  | CCAFS SLC-17B  | Westar-1 | Communication satellite  | GTO  | Success  |
1974-05-17
10:31  | Delta 2914 | Delta 102
Thor 590  | CCAFS SLC-17B  | SMS-1 | Weather satellite  | GTO  | Success  |
1974-08-09
03:22  | Thor Burner 2A | Thor 275  | VAFB SLC-10W  | DMSP-5C-F1 | Military weather satellite  | LEO / SSO  | Success  |
1974-10-10
22:53  | Delta 2914 | Delta 103
Thor 589  | CCAFS SLC-17B  | Westar-2 | Communication satellite  | GTO  | Success  |
1974-11-15
17:11  | Delta 2310 | Delta 104
Thor 592  | VAFB SLC-2W  | NOAA-4 / Oscar 7 / Intasat  | Weather Satellite / Amateur radio satellite / Ionosphere research  | LEO / SSO  | Success  |
1974-11-23
00:28  | Delta 2313 | Delta 105
Thor 591  | CCAFS SLC-17B  | Skynet-2B  | Military communication satellite  | GTO  | Success  |
1974-12-19
02:39  | Delta 2914 | Delta 106
Thor 599  | CCAFS SLC-17B  | Symphonie-1  | Communication satellite  | GTO  | Success  |

## 1975

There were 16 Thor missiles launched in 1975. All 16 launches were successful.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

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|
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1975-01-22
17:56  | Delta 2910 | Delta 107
Thor 598  | VAFB SLC-2W  | Landsat 2 | Earth Resource Technology Satellite  | 917 km LEO, near polar, Sun synchronous.  | Success  | Satellite operated until Feb 25, 1982.
1975-02-06
22:04  | Delta 2914 | Delta 108
Thor 593  | CCAFS SLC-17B  | SMS-2 | Weather satellite  | GTO  | Success  |
1975-04-10
23:50  | Delta 1410 | Delta 109
Thor 584  | VAFB SLC-2W  | GEOS-C  | Geodetic research satellite  | LEO  | Success  |
1975-05-07
23:35  | Delta 2914 | Delta 110
Thor 596  | CCAFS SLC-17B  | Anik-A3  | Communication Satellite  | GTO  | Success  |
1975-05-24
03:22  | Thor Burner 2A | Thor 197  | VAFB SLC-10W  | DMSP-5C-F2 | Military weather satellite  | LEO / SSO  | Success  |
1975-06-12
08:12  | Delta 2910 | Delta 111
Thor 595  | VAFB SLC-2W  | Nimbus-6 | Weather Satellite  | LEO / SSO  | Success  |
1975-06-21
11:43  | Delta 1910 | Delta 112
Thor 586  | CCAFS SLC-17B  | OSO-8 | Solar observation satellite  | LEO  | Success  |
1975-08-09
01:47  | Delta 2913 | Delta 113
Thor 602  | VAFB SLC-2W  | COS-B  | High-energy astronomy research satellite  | HEO  | Success  |
1975-09-09
05:30  | N-I | N-1 (F)  | Tanegashima SLC-N  | ETS-1 (Kiku-1)  | Technological demonstration satellite  | MEO  | Success  | First Japanese licensed built Delta flight.
1975-08-27
01:42  | Delta 2914 | Delta 114
Thor 594  | CCAFS SLC-17A  | Symphonie-2  | Communication satellite  | GTO  | Success  |
1975-09-19
| Thor DSV-2J  | Thor 201  | Johnston LE-2  |  | Missile defense test tracking target  | Suborbital  | Success  |
1975-10-06
09:01  | Delta 2910 | Delta 115
Thor 600  | VAFB SLC-2W  | Explorer 54 (AE-D)  | Atmospheric research satellite  | MEO  | Success  |
1975-10-16
22:40  | Delta 2914 | Delta 116
Thor 597  | CCAFS SLC-17B  | GOES-A (GOES-1)  | Weather satellite  | GTO  | Success  |
1975-11-06
| Thor DSV-2J  | Thor 274  | Johnston LE-2  |  | Missile defense test tracking target  | Suborbital  | Success  | Last sub-orbital Thor series flight
1975-11-20
02:06  | Delta 2910 | Delta 117
Thor 604  | CCAFS SLC-17B  | Explorer 55 (AE-E)  | Atmospheric research satellite  | MEO  | Success  |
1975-12-13
01:56  | Delta 3914 | Delta 118
Thor 607  | CCAFS SLC-17A  | Satcom-1 | Communication satellite  | GTO  | Success  | First flight of the Delta 3000 series.

## 1976

There were 12 Thor missiles launched in 1976. 11 of the 12 launches were successful, giving a 91.7% success rate.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
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|
|
|
|
|

1976-01-17
23:28  | Delta 2914 | Delta 119
Thor 606  | CCAFS SLC-17B  | CTS 1 Hermes | Experimental communication satellite  | GTO  | Success  |
1976-02-19
07:52  | Thor Burner 2A | Thor 182  | VAFB SLC-10W  | DMSP-5C-F3 | Military weather satellite  | planned: LEO / SSO | Failure  | Thor stage not loaded with enough kerosene fuel due to incorrect LR79 main engine data sheet entry. Satellite re-entered after one orbit.
1976-02-19
22:32  | Delta 2914 | Delta 120
Thor 603  | CCAFS SLC-17B  | Marisat-1 | Communication satellite  | GTO  | Success  |
1976-02-29
03:30  | N-I | N-2 (F)  | Tanegashima SLC-N  | ISS-1 (Ume-1)  | Ionospheric research satellite  | MEO  | Success  |
1976-03-26
22:42  | Delta 3914 | Delta 121
Thor 610  | CCAFS SLC-17A  | Satcom-2 | Communication satellite  | GTO  | Success  |
1976-04-22
20:46  | Delta 2914 | Delta 122
Thor 608  | CCAFS SLC-17B  | NATO 3A  | Military communication satellite  | GTO  | Success  |
1976-05-04
08:00  | Delta 2913 | Delta 123
Thor 609  | VAFB SLC-2W  | LAGEOS-1  | Geodesic research satellite  | MEO  | Success  |
1976-06-10
00:09  | Delta 2914 | Delta 124
Thor 601  | CCAFS SLC-17A  | Marisat-2 | Communication satellite  | GTO  | Success  |
1976-07-08
23:31  | Delta 2914 | Delta 125
Thor 611  | CCAFS SLC-17A  | Palapa-A1  | Communication satellite  | GTO  | Success  |
1976-07-29
17:07  | Delta 2310 | Delta 126
Thor 605  | VAFB SLC-2W  | NOAA-5  | Weather satellite  | LEO / SSO  | Success  |
1976-09-11
08:00  | Thor DSV-2U | Thor 172  | VAFB SLC-10W  | DMSP-5D-F1 | Military weather satellite  | LEO / SSO  | Success  |
1976-10-14
22:44  | Delta 2914 | Delta 127
Thor 614  | CCAFS SLC-17A  | Marisat-3 | Communication satellite  | GTO  | Success  |

## 1977

There were 12 Thor missiles launched in 1977. 10 of the 12 launches were successful, giving an 83.3% success rate.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
|
|
|
|
|
|

1977-01-28
00:49  | Delta 2914 | Delta 128
Thor 613  | CCAFS SLC-17A  | NATO 3B  | Military communication satellite  | GTO  | Success  |
1977-02-23
08:50  | N-I | N-3 (F)  | Tanegashima SLC-N  | ETS-2 (Kiku-2)  | Experimental communication satellite  | GTO  | Success  |
1977-03-10
23:16  | Delta 2914 | Delta 129
Thor 612  | CCAFS SLC-17A  | Palapa-A2  | Communication satellite  | GTO  | Success  |
1977-04-20
10:15  | Delta 2914 | Delta 130
Thor 617  | CCAFS SLC-17B  | ESA-GEOS-1  | Magnetosphere research satellite  | planned: GTO | Partial failure  | Premature separation of second and third stages led to failure of Stage 3 spin up.
1977-06-05
02:59  | Thor DSV-2U | Thor 183  | VAFB SLC-10W  | DMSP-5D-F2 | Military weather satellite  | LEO / SSO  | Success  |
1977-06-16
10:51  | Delta 2914 | Delta 131
Thor 616  | CCAFS SLC-17B  | GOES-B (GOES-2)  | Weather satellite  | GTO  | Success  |
1977-07-14
14:56  | Delta 2914 | Delta 132
Thor 618  | CCAFS SLC-17B  | GMS-1  | Weather satellite  | GTO  | Success  |
1977-08-25
23:50  | Delta 2313 | Delta 133
Thor 615  | CCAFS SLC-17B  | Sirio-1  | Experimental communication satellite  | GTO  | Success  |
1977-09-13
23:21  | Delta 3914 | Delta 134
Thor 619  | CCAFS SLC-17A  | OTS-1 | Experimental communication satellite  | planned: GTO | Failure  | Launch vehicle exploded at T+52 seconds due to a rupture of the SRM #1 casing.
1977-10-22
13:53  | Delta 2914 | Delta 135
Thor 623  | CCAFS SLC-17B  | Explorer 56 (ISEE-A / B)  | Magnetospheric research satellites  | HEO  | Success  |
1977-11-23
01:35  | Delta 2914 | Delta 136
Thor 620  | CCAFS SLC-17A  | Meteosat-1 | Weather satellite  | GTO  | Success  |
1977-12-15
00:47  | Delta 2914 | Delta 137
Thor 624  | CCAFS SLC-17B  | CS-1  | Experimental communication satellite  | GTO  | Success  |

## 1978

There were 12 Thor missiles launched in 1978. All 12 launches were successful.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
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1978-01-26
17:36  | Delta 2914 | Delta 138
Thor 613  | CCAFS SLC-17A  | Explorer 57 (International Ultraviolet Explorer)  | Astronomical observatory satellite  | HEO  | Success  | Satellite operational until 1996.
1978-02-15
04:00  | N-I | N-4 (F)  | Tanegashima SLC-N  | ISS-2 (Ume-2)  | Ionospheric research satellite  | MEO  | Success  |
1978-03-05
17:54  | Delta 2910 | Delta 139
Thor 621  | VAFB SLC-2W  | Landsat 3 | Earth Resource Technology Satellite  | 917 km LEO, near polar, Sun synchronous.  | Success  | Satellite decommissioned on March 21, 1983.
1978-04-07
22:01  | Delta 2914 | Delta 140
Thor 626  | CCAFS SLC-17B  | BSE-1[3] | Direct-broadcast satellite | GTO (167×35844 km, i=27°, 631 min)  | Success  | First of Japanese BSE series, also known as "Yuri 1".
1978-05-01
03:05  | Thor DSV-2U | Thor 143  | VAFB SLC-10W  | DMSP-5D-F3 | Military weather satellite  | LEO / SSO  | Success  |
1978-05-11
22:59  | Delta 3914 | Delta 141
Thor 627  | CCAFS SLC-17A  | OTS-2 | Experimental communication satellite  | GTO  | Success  |
1978-06-16
10:49  | Delta 2914 | Delta 142
Thor 625  | CCAFS SLC-17B  | GOES-C (GOES-3)  | Weather satellite  | GTO  | Success  |
1978-07-14
10:43  | Delta 2914 | Delta 143
Thor 631  | CCAFS SLC-17A  | ESA-GEOS-2  | Magnetosphere research satellite  | GTO  | Success  |
1978-08-12
15:12  | Delta 2914 | Delta 144
Thor 633  | CCAFS SLC-17B  | Explorer 59 (ISEE-3)  | Magnetospheric research satellite  | HEO to Sun-Earth L1 halo orbit
Eventually shifted to heliocentric | Success  | First satellite to use Lagrangian point and halo orbit
Later re-classified as the International Cometary Explorer. Satellite still operational as of 2014.[4]
1978-10-24
08:14  | Delta 2910 | Delta 145
Thor 630  | VAFB SLC-2W  | Nimbus-7 / CAMEO  | Weather Satellite / Ionosphere research  | LEO / SSO  | Success  |
1978-11-19
00:46  | Delta 2914 | Delta 146
Thor 634  | CCAFS SLC-17B  | NATO 3C  | Military communication satellite  | GTO  | Success  |
1978-12-16
00:21  | Delta 3914 | Delta 147
Thor 632  | CCAFS SLC-17A  | Anik-B1  | Communication Satellite  | GTO  | Success  |

## 1979

There were 5 Thor missiles launched in 1979. 4 of the 5 launches were successful, giving an 80% success rate.

Date/Time
(UTC)  | Rocket  | S/N  | Launch Site  | Payload  | Function  | Orbit  | Outcome  | Remarks

|
|
|
|
|
|
|
|

1979-01-30
21:42  | Delta 2914 | Delta 148
Thor 629  | CCAFS SLC-17B  | SCATHA (P78-2) | Military technological research satellite  | HEO  | Success  |
1979-02-06
08:46  | N-I | N-5 (F)  | Tanegashima SLC-N  | ECS-A (Ayame 1)  | Experimental communication satellite  | planned: GTO | Failure  | Recontact between satellite and upper stage.
1979-06-06
18:22  | Thor DSV-2U | Thor 264  | VAFB SLC-10W  | DMSP-5D-F4 | Military weather satellite  | LEO / SSO  | Success  |
1979-08-10
00:20  | Delta 2914 | Delta 149
Thor 638  | CCAFS SLC-17A  | Westar-3 | Communication Satellite  | GTO  | Success  |
1979-12-07
01:35  | Delta 3914 | Delta 150
Thor 622  | CCAFS SLC-17A  | Satcom-3 | Communication satellite  | GTO  | Success  |

## See also

Delta (rocket family)

* v
* t
* e

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1. ↑ "Archived copy". Archived from the original on 2004-11-18. https://web.archive.org/web/20041118074655/https://history.nasa.gov/SP-4012/vol3/table1.32.htm. Retrieved 2007-03-12.
2. ↑ Chronology of Thor-Delta Development and Operations ] NASA
3. ↑ NSSDC
4. ↑ Morin, Monte (August 9, 2014). "Vintage ISEE-3 satellite makes long-awaited flyby on Sunday". The Los Angeles Times. http://www.latimes.com/science/sciencenow/la-sci-sn-isee3-flyby-20140808-story.html.

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