List of Thor and Delta launches (1990–1999)

Main article: List of Thor and Delta launches

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

List of Thor and Delta launches
1957–1959 · 1960–1969 · 1970–1979 · 1980–1989 · 1990–1999 · 2000–2009 · 2010–2019 · 2020–2024

Notable missions

Mars Pathfinder

Main article: Mars Pathfinder

Mars Climate Orbiter

Main article: Mars Climate Orbiter

Launch statistics

Rocket configurations

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1990

'91

'92

'93

'94

'95

'96

'97

'98

'99

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

Launch sites

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1990

'91

'92

'93

'94

'95

'96

'97

'98

'99

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

Launch outcomes

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1990

'91

'92

'93

'94

'95

'96

'97

'98

'99

•   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.[1] 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