# List of Thor and Delta launches (1990–1999)

Between 1990 and 1999, there were 89 Thor-based rockets launched, of which 85 were successful, giving a 95.5% success rate.

## Launch statistics
### Rocket configurations

* Delta I (4000)
* Delta II (6000)
* Delta II (7000)
* Delta III (8000)
* H-1

### Launch sites

* Cape Canaveral SLC-17A
* Cape Canaveral SLC-17B
* Vandenberg SLC-2W
* Tanegashima SLC-N

### Launch outcomes

* Success
* Partial Failure
* Failure

## Launch history
### 1990

There were 13 Thor missiles launched in 1990. All 13 launches were successful.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 191 | January 24, 1990 22:55 | Delta II 6925 | CCAFS LC-17A | USA-50 (GPS II-6) | 840 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| H-21 (F) | February 7, 1990 01:33 | H-I | Tanegashima SLC-N | MOS-1B (Momo-1B) / Oscar 20 / DEBUT | | LEO / SSO | JAXA | Success |
| Earth observation satellite / Amateur radio satellite / Technological demonstration ||||||||
| 192 | February 14, 1990 16:15 | Delta II 6920-8 | CCAFS LC-17B | LACE / RME | 2,470 kg | LEO | NASA | Success |
| Military research ||||||||
| 193 | March 26, 1990 02:45 | Delta II 6925 | CCAFS LC-17A | USA-54 (GPS II-7) | 840 kg | MEO | US Air Force | Success |
| GPS Block II satellite ||||||||
| 194 | April 13, 1990 22:28 | Delta II 6925-8 | CCAFS LC-17B | Palapa B2R | | GTO | NewSat | Success |
| First commercial Delta II launch, Comsat ||||||||
| 195 | June 1, 1990 21:48 | Delta II 6920-10 | CCAFS LC-17A | ROSAT | 2,421 kg | LEO | NASA | Success |
| Space telescope ||||||||
| 196 | June 12, 1990 05:52 | Delta 4925-8 | CCAFS LC-17B | INSAT 1D | | GTO | | Success |
| Comsat, Last Delta I launch ||||||||
| 197 | August 2, 1990 05:39 | Delta II 6925 | CCAFS LC-17A | USA-63 (GPS II-8) | 840 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 198 | August 18, 1990 00:42 | Delta II 6925 | CCAFS LC-17B | Thor 1 (BSB-R2) | | GTO | | Success |
| Comsat ||||||||
| H-22 (F) | August 28, 1990 09:05 | H-I | Tanegashima SLC-N | BS-3A (Yuri-3A) | | GTO | | Success |
| Direct broadcasting satellite ||||||||
| 199 | October 1, 1990 21:56 | Delta II 6925 | CCAFS LC-17A | USA-64 (GPS II-9) | 840 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 200 | October 30, 1990 23:16 | Delta II 6925 | CCAFS LC-17B | Inmarsat-2 F1 | | GTO | Inmarsat | Success |
| 200th Delta launch, Maritime comsat ||||||||
| 201 | November 26, 1990 21:39 | Delta II 7925 | CCAFS LC-17A | USA-66 (GPS IIA-1) | 1,816 kg | MEO | US Air Force | Success |
| First 7000-series launch, Navigation satellite ||||||||

### 1991

There were 6 Thor missiles launched in 1991. All 6 launches were successful.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 202 | January 8, 1991 00:53 | Delta II 7925 | CCAFS LC-17B | NATO 4A | 1,433 kg | GTO | NATO | Success |
| Comsat ||||||||
| 203 | March 8, 1991 23:03 | Delta II 6925 | CCAFS LC-17B | Inmarsat-2 F2 | | GTO | Inmarsat | Success |
| Comsat ||||||||
| 204 | April 13, 1991 00:09 | Delta II 7925 | CCAFS LC-17B | ASC-2 (Spacenet F4) | | GTO | | Success |
| Communications satellite ||||||||
| 205 | May 29, 1991 22:55 | Delta II 7925 | CCAFS LC-17B | Aurora 2 | | GTO | | Success |
| Communications satellite ||||||||
| 206 | July 4, 1991 02:32 | Delta II 7925 | CCAFS LC-17A | USA-71 (GPS IIA-2) | 1,816 kg | MEO | US Air Force | Success |
| GPS Block IIA satellite ||||||||
| H-23 (F) | August 25, 1991 08:40 | H-I | Tanegashima SLC-N | BS-3B (Yuri-3B) | | GTO | JAXA | Success |
| Direct broadcasting satellite ||||||||

### 1992

There were 12 Thor missiles launched in 1992. All 12 launches were successful.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| H-24 (F) | 11 February 1992 01:50 | H-I | Tanegashima, SLC-N | JERS-1 (Fuyo) | | LEO / SSO | JAXA | Success |
| Final flight of Japanese license built Deltas; final use of Extended Long Tank Thor. Earth observation satellite ||||||||
| 207 | 23 February 1992 22:29 | Delta II 7925-9.5 | CCAFS, LC-17B | USA-79 (GPS IIA-3) | 840 kg | MEO | U.S. Air Force | Success |
| Navigation satellite ||||||||
| 208 | 10 April 1992 03:20 | Delta II 7925-9.5 | CCAFS, LC-17B | USA-80 (GPS IIA-4) | 840 kg | MEO | U.S. Air Force | Success |
| Navigation satellite ||||||||
| 209 | 14 May 1992 00:40 | Delta II 7925 | CCAFS, LC-17B | Palapa B4 | | GTO | Indosat | Success |
| Communications satellite ||||||||
| 210 | 7 June 1992 16:40 | Delta II 6920-10 | CCAFS, LC-17A | EUVE | 3,275 kg | LEO | NASA | Success |
| Space telescope ||||||||
| 211 | 7 July 1992 09:20 | Delta II 7925-9.5 | CCAFS, LC-17B | USA-83 (GPS IIA-5) | 840 kg | MEO | U.S. Air Force | Success |
| Navigation satellite ||||||||
| 212 | 24 July 1992 14:26 | Delta II 6925 | CCAFS, LC-17A | GEOTAIL | 980 kg | HEO | NASA | Success |
| Final 6000-series launch, Earth observation satellite ||||||||
| 213 | 31 August 1992 10:41 | Delta II 7925 | CCAFS, LC-17B | Satcom C4 | | GTO | | Success |
| Communications satellite ||||||||
| 214 | 9 September 1992 08:57 | Delta II 7925-9.5 | CCAFS, LC-17A | USA-84 (GPS IIA-6) | 840 kg | MEO | U.S. Air Force | Success |
| Navigation satellite ||||||||
| 215 | 12 October 1992 09:47 | Delta II 7925 | CCAFS, LC-17B | DFS Kopernikus-3 | 850 kg | GTO | Deutsche Bundespost | Success |
| Communications satellite ||||||||
| 216 | 22 November 1992 23:54 | Delta II 7925-9.5 | CCAFS, LC-17A | USA-85 (GPS IIA-7) | 840 kg | MEO | U.S. Air Force | Success |
| Navigation satellite ||||||||
| 217 | 18 December 1992 22:16 | Delta II 7925-9.5 | CCAFS, LC-17B | USA-87 (GPS IIA-8) | 840 kg | MEO | U.S. Air Force | Success |
| Navigation satellite ||||||||

### 1993

There were 7 Thor missiles launched in 1993. All 7 launches were successful.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 218 | February 3, 1993 02:55 | Delta II 7925 | CCAFS LC-17A | USA-88 (GPS IIA-9) | 1,816 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 219 | March 30, 1993 03:09 | Delta II 7925 | CCAFS LC-17A | USA-90 (GPS IIA-10)/SEDS-1 | 1,816 kg | MEO/LEO | US Air Force | Success |
| Navigation satellite/Tether demonstration ||||||||
| 220 | May 13, 1993 00:07 | Delta II 7925 | CCAFS LC-17A | USA-91 (GPS IIA-11) | 1,816 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 221 | June 26, 1993 13:27 | Delta II 7925 | CCAFS LC-17A | USA-92 (GPS IIA-12)/PMG | 1,816 kg | MEO/LEO | US Air Force | Success |
| Navigation satellite/Technology demonstration ||||||||
| 222 | August 30, 1993 12:38 | Delta II 7925 | CCAFS LC-17B | USA-94 (GPS IIA-13) | 1,816 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 223 | October 26, 1993 17:04 | Delta II 7925 | CCAFS LC-17B | USA-96 (GPS IIA-14) | 1,816 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 224 | December 8, 1993 00:48 | Delta II 7925 | CCAFS LC-17A | NATO 4B | | GTO | NATO | Success |
| Communications satellite ||||||||

### 1994

There were 3 Thor missiles launched in 1994. All 3 launches were successful.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 225 | February 19, 1994 23:45 | Delta II 7925-8 | CCAFS LC-17B | Galaxy 1R | | GTO | Intelsat | Success |
| Communications satellite ||||||||
| 226 | March 10, 1994 03:40 | Delta II 7925 | CCAFS LC-17A | USA-100 (GPS IIA-15)/SEDS-2 | 1,816 kg | MEO/LEO | US Air Force | Success |
| Navigation satellite/Tether demonstration ||||||||
| 227 | November 1, 1994 09:31 | Delta II 7925-10 | CCAFS LC-17B | Wind | 1,195 kg | Heliocentric | NASA | Success |
| Solar research ||||||||

### 1995

There were 3 Thor missiles launched in 1995. 2 of the 3 launches were successful, giving a 66.7% success rate.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 228 | 5 August 1995 11:10 | Delta II 7925–9.5 | CCAFS, LC-17B | Koreasat 1 | 711 kg | GTO | KT Corporation | Partial failure |
| Communications satellite, One SRB failed to separate, retarding the booster's orbital velocity. Spacecraft eventually reached correct orbit but with substantially shortened operational life. ||||||||
| 229 | 4 November 1995 14:22 | Delta II 7920-10 | VAFB, SLC-2W | RADARSAT-1 and SURFSAT | 2,750 kg | Geocentric | CSA | Success |
| Earth observation satellite, first Delta II launch from Vandenberg. ||||||||
| 230 | 30 December 1995 13:48:00 | Delta II 7920-10 | CCAFS, LC-17A | Rossi X-ray Timing Explorer | 3,200 kg | Low Earth orbit | NASA | Success |
| Explorer program ||||||||

### 1996

There were 10 Thor missiles launched in 1996. All 10 launches were successful.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 231 | January 14, 1996 11:10 | Delta II 7925 | CCAFS LC-17B | Koreasat-2 | | | | Success |
| 232 | February 17, 1996 20:43 | Delta II 7925-8 | CCAFS LC-17B | NEAR | 487 kg | Heliocentric | NASA | Success |
| Asteroid orbiter ||||||||
| 233 | February 24, 1996 11:24 | Delta II 7925-10 | VAFB SLC-2W | Polar | 1,300 kg | Geocentric | NASA | Success |
| Earth observation satellite ||||||||
| 234 | March 28, 1996 00:21 | Delta II 7925 | CCAFS LC-17B | USA-117 (GPS IIA-16) | 1,816 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 235 | April 24, 1996 12:27 | Delta II 7920-10 | VAFB SLC-2W | MSX | 2,700 kg | Geocentric | BMDO | Success |
| Infra-red telescope ||||||||
| 236 | May 24, 1996 01:10 | Delta II 7925 | CCAFS LC-17B | Galaxy 9 | 700 kg | GSO | PanAmSat / Intelsat | Success |
| Communications satellite ||||||||
| 237 | July 16, 1996 00:50 | Delta II 7925 | CCAFS LC-17A | USA-126 (GPS IIA-17) | 1,816 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 238 | September 12, 1996 08:49 | Delta II 7925 | CCAFS LC-17A | USA-128 (GPS IIA-18) | 1,816 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 239 | November 7, 1996 17:00 | Delta II 7925 | CCAFS LC-17A | Mars Global Surveyor | 1,030.5 kg | Heliocentric | NASA | Success |
| Mars orbiter ||||||||
| 240 | December 4, 1996 06:58 | Delta II 7925 | CCAFS LC-17B | Mars Pathfinder | 264 kg | Heliocentric | NASA | Success |
| Mars lander and rover ||||||||

### 1997

There were 11 Thor missiles launched in 1997. 10 of the 11 launches were successful, giving a 90.9% success rate.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 241 | January 17, 1997 16:28 | Delta II 7925-9.5 | CCAFS LC-17A | GPS IIR-1 | 2,030 kg | Planned: MEO | US Air Force | Failure |
| Exploded 13 seconds after launch due to SRB failure. Navigation satellite ||||||||
| 242 | May 5, 1997 14:55 | Delta II 7920-10C | VAFB SLC-2 | MS-1 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 243 | May 20, 1997 22:39 | Delta II 7925-9.5 | CCAFS LC-17A | Telenor Thor II | 1,467 kg | GTO | Telenor | Success |
| Hughes HS 376 satellite ||||||||
| 244 | July 9, 1997 13:04 | Delta II 7920-10C | VAFB SLC-2W | MS-2 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 245 | July 23, 1997 03:43 | Delta II 7925-9.5 | CCAFS LC-17A | USA-132 (GPS IIR-2) | 2,032 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 246 | August 21, 1997 00:38 | Delta II 7920-10C | VAFB SLC-2W | MS-3 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 247 | August 25, 1997 14:39 | Delta II 7920-8 | CCAFS LC-17A | Advanced Composition Explorer (ACE) | 562 kg | Heliocentric | NASA | Success |
| Solar wind and cosmic-ray research ||||||||
| 248 | September 27, 1997 01:23 | Delta II 7920-10C | VAFB SLC-2W | MS-4 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 249 | November 6, 1997 00:30 | Delta II 7925 | CCAFS LC-17A | USA-134 (GPS IIA-19) | 2,032 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||
| 250 | November 9, 1997 01:34 | Delta II 7920-10C | VAFB SLC-2W | MS-5 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 251 | December 20, 1997 13:16 | Delta II 7920-10C | VAFB SLC-2W | MS-6 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||

### 1998

There were 13 Thor missiles launched in 1998. 12 of the 13 launches were successful, giving a 92.3% success rate.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 252 | January 10, 1998 00:32 | Delta II 7925-9.5 | CCAFS SLC-17B | Skynet 4D | | | Astrium Services | Success |
| 253 | February 14, 1998 14:34 | Delta II 7420-10C | CCAFS SLC-17A | Globalstar-1 | 550 kg | LEO | Globalstar | Success |
| Four SS/L satellites ||||||||
| 254 | February 18, 1998 13:58 | Delta II 7920-10C | VAFB SLC-2W | MS-7 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 255 | March 30, 1998 06:02 | Delta II 7920-10C | VAFB SLC-2W | MS-8 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 256 | April 24, 1998 22:38 | Delta II 7420-10C | CCAFS SLC-17A | Globalstar-2 | 550 kg | LEO | Globalstar | Success |
| Four SS/L satellites ||||||||
| 257 | May 17, 1998 21:16 | Delta II 7920-10C | VAFB SLC-2W | MS-9 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 258 | June 10, 1998 00:35 | Delta II 7925-9.5 | CCAFS SLC-17A | Thor III | | GEO | Telenor | Success |
| 259 | August 27, 1998 01:17 | Delta III 8930 | CCAFS SLC-17B | Galaxy 10 | 700 kg | GTO | PanAmSat / Intelsat | Failure |
| Maiden flight of Delta III, Destroyed by range safety after control problems and depletion of hydraulic fluid, Communications satellite ||||||||
| 260 | September 8, 1998 21:13 | Delta II 7920-10C | VAFB SLC-2W | MS-10 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 261 | October 24, 1998 12:08 | Delta II 7326 | CCAFS SLC-17A | Deep Space 1 | 373 kg | Heliocentric | NASA | Success |
| Satellite Technology ||||||||
| 262 | November 6, 1998 13:37 | Delta II 7920-10C | VAFB SLC-2W | MS-11 | | LEO | Iridium | Success |
| Five Iridium satellites ||||||||
| 263 | November 22, 1998 23:54 | Delta II 7925-9.5 | CCAFS SLC-17B | BONUM-1 | | | | Success |
| 264 | December 11, 1998 18:45 | Delta II 7425 | CCAFS SLC-17A | Mars Climate Orbiter | 338 kg | Heliocentric | NASA | Success |
| Payload later failed, Mars orbiter ||||||||

### 1999

There were 11 Thor missiles launched in 1999. 10 of the 11 launches were successful, giving a 90.9% success rate.
| Flight No. | Date / time (UTC) | Rocket, Configuration | Launch site | Payload | Payload mass | Orbit | Customer | Launch outcome |
| 265 | January 3, 1999 20:21 | Delta II 7425 | CCAFS SLC-17B | Mars Polar Lander | 290 kg | Heliocentric | NASA | Success |
| Payload later failed, Mars lander ||||||||
| 266 | February 7, 1999 21:04 | Delta II 7426 | CCAFS SLC-17A | Stardust | 305.397 kg | Heliocentric | NASA | Success |
| Comet probe ||||||||
| 267 | February 23, 1999 10:29 | Delta II 7920-10 | VAFB SLC-2W | ARGOS (P91-1 ARGOS), Ørsted and SUNSAT | 2,450 kg | Polar orbit | AFRL / NRL / STP | Success |
| At a mission cost of $220M, ARGOS, with its nine payloads, was the USAF's largest R&D mission. Both Ørsted and SUNSAT were their respective countries first satellites. Research and development, scientific ||||||||
| 268 | April 15, 1999 18:32 | Delta II 7920-10 | VAFB SLC-2W | Landsat 7 | 2,200 kg | SSO | NASA | Success |
| 269 | May 5, 1999 01:00 | Delta III 8930 | CCAFS SLC-17B | Orion 3 | 4,300 kg | GTO | Loral | Failure |
| Second stage engine failure. Payload placed into LEO, Communications satellite ||||||||
| 270 | June 10, 1999 13:48 | Delta II 7420-10C | CCAFS SLC-17B | Globalstar 3 | 550 kg | LEO | Globalstar | Success |
| 271 | June 24, 1999 15:44 | Delta II 7320-10 | CCAFS SLC-17A | FUSE | 1,360 kg | LEO | NASA | Success |
| Space telescope ||||||||
| 272 | July 10, 1999 08:45 | Delta II 7420-10C | CCAFS SLC-17B | Globalstar 4 | 550 kg | LEO | Globalstar | Success |
| 273 | July 25, 1999 07:46 | Delta II 7420-10C | CCAFS SLC-17A | Globalstar 5 | 550 kg | LEO | Globalstar | Success |
| 274 | August 17, 1999 04:37 | Delta II 7420-10C | CCAFS SLC-17B | Globalstar 6 | 550 kg | LEO | Globalstar | Success |
| 275 | October 7, 1999 12:51 | Delta II 7925-9.5 | CCAFS SLC-17A | USA-145 (GPS IIR-3) | 2,032 kg | MEO | US Air Force | Success |
| Navigation satellite ||||||||