Thor Delta

by Jean-Jacques Serra
listing by Gunter Krebs
At the end of 1958, not long after NASA was founded, the necessity of a new civilian launcher arose. This vehicle was to be available quickly until the arrival of the Atlas and Centaur. The basic stage could only be Thor associated with one of the 3 top stages available: Able, Ablestar and Agena. Refering to the fourth letter of the Greek alphabet NASA named this new stage Delta in January 1959. Three months later the construction was granted to Douglas Aircraft (a dozen rockets were ordered) and the naming Thor Delta (or simply Delta) was adopted.

The original Delta was almost identical to Thor Able: first stage was Thor, and the second and third stage was inherited from Vanguard. The improvments were in the field of inertial guiding and active piloting during the ballistic phase between shutdown of the second stage and ignition of the third stage. This first version was 27.8 m high and weighed 51 tons; it could put 45 kg in LEO.

Its first launch on 13 May 1960 ended in a failure; the third stage didn't work. But the 12 August the second Delta was successful in orbiting Echo 1; this was the first of 22 successes. NASA went on using such launchers because of their reliability and their low cost and because of the improvements made by Douglas then McDonnell Douglas.

The A version (1962) resulted of the use of the MB3-3 motor; the B version (1962) of the lengthening of the second stage; the C version (1963) had a new third stage; the D version (1964) had Castor boosters added to the first stage. The TAD (Thrust Augmented Delta) could place 450 kg on a 800 km orbit.

The second stage was replaced in the E version (1965) resulting in the TAID (Thrust Augmented Improved Delta). The diameter of the second stage changed from 0.92 m to 1.43 m. This tripled the combustion time. The LTTAD (Long Tank Thrust Augmented Delta) appeared in the M version in 1968. the M-6 version of 1969 featured 6 Castor boosters; 3 ignited at takeoff and the others burned after the first ones shutdowned. Then not 6 but 9 boosters were included which enabled Delta to deliver 350 kg in GEO and 650 kg in a 550 km circular orbit (in 2-stage configuration).

"Straight 8" appeared in the early 70ies; this Delta version had a constant diameter: 2.44 m (8 ft). The version naming changed at the same time to become a 4-digit number: the two first digits specify the type of the first stage and the number of strap-on boosters. The two last digits refer to the type of the second and the third stage.

The 2910 version featured a Rocketdyne RS-27 first stage motor burning during 225 seconds and 9 Castor-2 boosters. The second stage was made from an Aerojet AJ10-118F motor (aerozin 50 & N204) delivering 4.3 t thrust during 320 seconds or a TRW TR-201 motor derived from the Lem descent motor using the same propellants. The 2-stage 2910 Delta could deliver 2 tons in orbit. The 3-stage 2914 version launched for the first time in 1972 featured a Thiokol TE 364-4 third stage motor providing 6.5 tons thrust during 44 seconds; it could launch 720 kg payloads in geosynchronous orbit.

The 2900 series was to be the last Delta series but as the Shuttle wasn't operational before 1980 NASA ordered the development of a new series for heavier payloads.

The 3914 Delta appeared in 1975. This version had its Castor-2s replaced by Castor-4s of 1 m diameter and 10 m high providing each 42 tons thrust during 56 seconds. The GEO capacity reached 930 kg. In 1980 as the third stage was replaced by a PAM-D (Payload Assist Module / Delta) equipped with a Thiokol Star 48 engine capable of 8.6 tons thrust during 85 seconds; Delta 3910 PAM peformance reached 1090 kg in GEO. In 1982 the second stage was replaced by a larger version (+30% propellant) with an Aerojet AJ10-118K (borrowed from Titan-3's Transtage) providing 4.35 tons thrust during 430 seconds. This Delta 3920 PAM of 35.5 m high could launch 1250 kg in GEO.

In 1984 NASA transfered Delta to a private company: Transpace Carrier Inc. At the end on the year it was believed that the launcher would be abandonned and replaced by the Shuttle. But after Challenger's accident in 1986 the launcher reappeared.

In 1987 the improved Delta was selected by the USAF as Medium Launch Vehicle (MLV) to place in orbit the second generation of Navstar satellites. The new launched was named Delta-2 and was designed in two stages: first the 6920 series then the 7920 series. The 6925 version was derived from Delta 3920 PAM by replacing the boosters by Castor-4As and lengthening the first stage of 3.65 m, extending the burn duration to 265 seconds. The diameter of the bulb cap was upped to 2.83 m. The launcher which first flew in 1989 was 39.6 m high, weighed 215 tons and could place 1400 kg in GEO.

The latest version is model 7925 which first launch occured in 1991. Its first stage is equipped with a RS-27 motor which nozzle was lengthened (12:1 instead of 8:1). The Thiokol boosters were replaced by Hercules GEM (Graphite Epoxy Motors) with weight reduced structure. Those boosters are 12 m long, weigh over 12.7 tons and provide 4.8 tons thrust. Delta 7925 weighs 225 tons and can place 1610 kg in GEO.

---

Current versions

Model	Description
7320	Delta II Lite with 3 strapons
7326	Delta II Lite with 3 strapons and Star 37FM third stage
7420	Delta II Lite with 4 strapons
7425	Delta II Lite with 4 strapons and PAM-D (Star 48) stage
7426	Delta II Lite with 4 strapons and Star 37FM
7920	Delta II standard, LEO missions
7925	Delta II with PAM-D third stage for GEO and escape missions
8930	Delta III with GEM LDXL strapons and LH2/LOX second stage

Delta in its different Delta-1 configurations launched numerous satellites on various orbits especially scientific satellites:
- with low perigee ( ADE)
- with high apogee ( IMP, ISEE 1 & ISEE 2, Exosat)
- in lunar orbit (IMP-F, RAE-B)
- to the Solar-Earth Lagrange point (ISEE-3)
- and interplanetary probes (Pioneer, ICE former-ISEE-3)

Among the scientific mission satellites some were launched:
- with collaboration ( ISEE, IUE, AMPTE)
- for foreign states ( Ariel, Isis, IRAS)
- or for international organizations ( Heos, TD 1A, ISEE 2, COS B, ESA-Geos 1, ESA-Geos 2, Exosat)

Application missions were aimed at:
- meteorology ( Tiros, Essa, Itos / NOAA, Nimbus, SMS, Goes)
- remote sensing ( Landsat)

Especially for telecommunication satellites such as:
- American satellites ( Telstar, Relay, Syncom, Westar, Satcom, SBS, Galaxy)
- International satellites ( Intelsat, NATO)
- or foreign satellites ( Skynet, Anik, Symphonie, CTS, Palapa, OTS, Sirio, Insat...)

Delta-2 versions were initially developped for the Navstar-2 satellites... but is not limited to them:
- scientific satellites ( Cobe, Rosat, EUVE, Geotail)
- telecommunication satellites ( BSB, Satcom, NATO,...)

Currently Delta is owned by McDonnell Douglas

---

Thor Delta launches

#	Launch id	Payload	Launch date	Site	Type	Status (orbit in perigee x apogee x inc. x period)
1	n/a	Echo 1	13 May 1960	C	DM19	Failure
2	60009	Echo 1A	12 Aug 1960	C	DM19
3	60016	Tiros 02	23 Nov 1960	C	DM19
4	61010	Explorer 10	25 Mar 1961	C	DM19
5	61017	Tiros 03	12 Jul 1961	C	DM19
6	61020	Explorer 12	15 Aug 1961	C	DM19
7	62002	Tiros 04	08 Feb 1962	C	DM19
8	62006	OSO 1	07 Mar 1962	C	DM19
9	62015	Ariel 1	26 Apr 1962	C	DM19
10	62025	Tiros 05	19 Jun 1962	C	DM19
11	62029	Telstar 1	10 Jul 1962	C	DM19
12	62047	Tiros 06	18 Sep 1962	C	DM19
13	62051	Explorer 14	02 Oct 1962	C	A
14	62059	Explorer 15	27 Oct 1962	C	A
15	62068	Relay 1	13 Dec 1962	C	B
16	63004	Syncom 1	14 Feb 1963	C	B
17	63009	Explorer 17	03 Apr 1963	C	B
18	63013	Telstar 2	07 May 1963	C	B
19	63024	Tiros 07	19 Jun 1963	C	B
20	63031	Syncom 2	26 Jul 1963	C	B
21	63046	Explorer 18	27 Nov 1963	C	C
22	63054	Tiros 08	21 Dec 1963	C	B
23	64003	Relay 2	21 Jan 1964	C	B
24	n/a	Explorer (BE A)	19 Mar 1964	C	B	Failure
25	64047	Syncom 3	19 Aug 1964	C	D
26	64060	Explorer 21	04 Oct 1964	C	C
27	64086	Explorer 26	21 Dec 1964	C	C
28	65004	Tiros 09	22 Jan 1965	C	C
29	65007	OSO 2	03 Feb 1965	C	C
30	65028	Intelsat 101	06 Apr 1965	C	D
31	65042	Explorer 28	29 May 1965	C	C
32	65051	Tiros 10	02 Jul 1965	C	C
33	n/a	OSO C	25 Aug 1965	C	C	Failure
34	65089	Explorer 29	06 Nov 1965	C	E
35	65105	Pioneer-6	16 Dec 1965	C	E	Interplanetary probe
36	66008	Essa 1	03 Feb 1966	C	C
37	66016	Essa 2	28 Feb 1966	C	E
38	66044	Explorer 32	25 May 1966	C	C1
39	66058	Explorer 33	01 Jul 1966	C	E1	30532 x 494230 x 29 x 19488
40	66075	Pioneer-7	17 Aug 1966	C	E1	Interplanetary probe
41	66087	Essa 3	02 Oct 1966	V	E
42	66096	Intelsat 201	26 Oct 1966	C	E1	Partial failure
43	66114	Biosat-1	14 Dec 1966	C	G	295 x 309 x 33.5 x 90.4
44	67001	Intelsat 202	11 Jan 1967	C	E1
45	67006	Essa 4	26 Jan 1967	V	E
46	67020	OSO 3	08 Mar 1967	C	C
47	67026	Intelsat 203	23 Mar 1967	C	E1
48	67036	Essa 5	20 Apr 1967	V	E
49	67051	Explorer 34	24 May 1967	V	E1
50	67070	Explorer 35 (IMP)	19 Jul 1967	C	E1	Lunar orbit
51	67083	Biosat-2	07 Sep 1967	C	G	286 x 313 x 33.5 x 90.4
52	67094	Intelsat 204	28 Sep 1967	C	E1
53	67100	OSO 4	18 Oct 1967	C	E1
54	67114	Essa 6	10 Nov 1967	V	C1
55	67123	Pioneer-8 TATS 1 (TETR 1)	13 Dec 1967	C	E1	Interplanetary probe
56	68002	Explorer 36	11 Jan 1968	V	E1
57	68055	Explorer 38	04 Jul 1968	V	J
58	68069	Essa 7	16 Aug 1968	V	N
59	n/a	Intelsat 301	18 Sep 1968	C	M	Failure
60	68100	Pioneer-9 TETR 2	08 Nov 1968	C	E1	Interplanetary probe
61	68109	Heos 1	05 Dec 1968	C	E1
62	68114	Essa 8	15 Dec 1968	V	N
63	68116	Intelsat 302	19 Dec 1968	C	M
64	69006	OSO 5	22 Jan 1969	C	C1
65	69009	Isis 1	30 Jan 1969	V	E1
66	69011	Intelsat 303	06 Feb 1969	C	M
67	69016	Essa 9	26 Feb 1969	C	E1
68	69045	Intelsat 304	22 May 1969	C	M
69	69053	Explorer 41	21 Jun 1969	V	E1
70	69056	Biosat-3	29 Jun 1969	C	N
71	69064	Intelsat 305	25 Jul 1969	C	N	Partial failure
72	69068	OSO 6	09 Aug 1969	C	N
73	n/a	Pioneer-10A	28 Sep 1969	C	L	Failure
74	69101	Skynet 1A	22 Nov 1969	C	M
75	70003	Intelsat 306	15 Jan 1970	C	M
76	70008	Itos Oscar 05	23 Jan 1970	V	N6
77	70021	Nato 1	20 Mar 1970	C	M
78	70032	Intelsat 307	23 Apr 1970	C	M
79	70055	Intelsat 308	23 Jul 1970	C	M
80	70062	Skynet 1B	19 Aug 1970	C	M
81	70106	NOAA 01 CEP 1	11 Dec 1970	V	N6	CEP 1 was attached to the 2nd stage
82	71009	Nato 2	03 Feb 1971	C	L
83	71019	Explorer 43	13 Mar 1971	C	M6
84	71024	Isis 2	01 Apr 1971	V	E1
85	71083	OSO 7	29 Sep 1971	C	N
86	71091	ITOS-3/NOAA	21 Oct 1971	V	N6	payload exploded?
87	72005	Heos 2	31 Jan 1972	V	L
88	72014	TD-1A	12 Mar 1972	V	N
89	72058	Landsat 1	23 Jul 1972	V	900
90	72073	Explorer 47	23 Sep 1972	C	1604
91	72082	NOAA 02	15 Oct 1972	V	300
92	72090	Anik A1	10 Nov 1972	C	1914
93	72097	Nimbus 5	11 Dec 1972	V	900
94	73023	Anik A2	20 Apr 1973	C	1914
95	73039	Explorer 49 (RAE B)	10 Jun 1973	C	1913	Lunar orbit
96	n/a	Itos E	16 Jul 1973	V	300	Failure
97	73078	Explorer 50	26 Oct 1973	C	1604
98	73086	NOAA 03	06 Nov 1973	V	300
99	73101	Explorer 51	16 Dec 1973	V	900
100	74002	Skynet 2A	19 Jan 1974	C	2913	Partial failure
101	74022	Westar 1	13 Apr 1974	C	2914
102	74033	SMS 1	17 May 1974	C	2914
103	74075	Westar 2	10 Oct 1974	C	2914
104	74089	NOAA 04 Oscar 07 Intasat	15 Nov 1974 at 17:11 UT	V	2310
105	74094	Skynet 2B	23 Nov 1974	C	2913
106	74101	Symphonie 1	19 Dec 1974	C	2914
107	75004	Landsat 2	22 Jan 1975	V	2910
108	75011	SMS 2	06 Feb 1975	C	2914
109	75027	Geos 3	09 Apr 1975	V	2310
110	75038	Anik A3	07 May 1975	C	2914
111	75052	Nimbus 6	12 Jun 1975	V	2910
112	75057	OSO 8	21 Jun 1975	C	2913
113	75072	Cos B	09 Aug 1975	V	2914
114	75077	Symphonie 2	27 Aug 1975	C	2914
115	75096	Explorer 54	06 Oct 1975	V	2910
116	75100	Goes 01	16 Oct 1975	C	2914
117	75107	Explorer 55	20 Nov 1975	C	2910
118	75117	Satcom 1	13 Dec 1975	C	3914
119	76004	CTS	17 Jan 1976	C	2914
120	76017	Marisat 1	19 Feb 1976	C	2914
121	76029	Satcom 2	26 Mar 1976	C	3914
122	76035	Nato 3A	22 Apr 1976	C	2914
123	76039	Lageos 1	04 May 1976	V	2913
124	76053	Marisat 2	10 Jun 1976	C	2914
125	76066	Palapa A1	08 Jul 1976	C	2914
126	76077	NOAA 05	29 Jul 1976	V	2310
127	76101	Marisat 3	14 Oct 1976	C	2914
128	77005	Nato 3B	28 Jan 1977	C	2914
129	77018	Palapa A2	10 Mar 1977	C	2914
130	77029	ESA-Geos 1	20 Apr 1977	C	2914
131	77048	Goes 02	16 Jun 1977	C	2914
132	77065	GMS 1	14 Jul 1977	C	2914
133	77080	Sirio 1	25 Aug 1977	C	2913
134	n/a	OTS 1	13 Sep 1977	C	3914	Failure
135	77102	ISEE 1 ISEE 2	22 Oct 1977	C	2914
136	77108	Meteosat 1	23 Nov 1977	C	2914
137	77118	Sakura 1	15 Dec 1977	C	2914
138	78012	IUE	26 Jan 1978	C	2914
139	78026	Landsat 3 Oscar 08 PIX 1	5 Mar 1978	V	2910	PIX 1 was attached to the 2nd stage
140	78039	Yuri 1	07 Apr 1978	C	2914
141	78044	OTS 2	11 May 1978	C	3914
142	78062	Goes 03	16 Jun 1978	C	2914
143	78071	ESA-Geos 2	14 Jul 1978	C	2914
144	78079	ISEE-3	11 Aug 1978	C	2914	To the Lagrange point and then became ICE
145	78098	Nimbus 7 Cameo	24 Oct 1978	V	2910	Cameo was attached to the 2nd stage
146	78106	Nato 3C	19 Nov 1978	C	2914
147	78116	Anik B1 Drims	16 Dec 1978	C	3914	Drims was attached to the 2nd stage
148	79007	Scatha (P78 2)	30 Jan 1979	C	2914	27800 x 42300 x 8.3 x 1441
149	79072	Westar 3	10 Aug 1979	C	2914
150	79101	Satcom 3	07 Dec 1979	C	3914
151	80014	SMM	14 Feb 1980	C	3910
152	80074	Goes 04	09 Sep 1980	C	3914
153	80091	SBS 1	15 Nov 1980	C	3910/PAM
154	81049	Goes 05	22 May 1981	C	3914
155	81070	Dynamics Explorer 1 Dynamics Explorer 2	03 Aug 1981	V	3913	Partial failure
156	81096	SBS 2	24 Sep 1981	C	3910/PAM
157	81100	SME Uosat 1	06 Oct 1981	V	2310
158	81114	Satcom 3R	20 Nov 1981	C	3910/PAM
159	82004	Satcom 4	16 Jan 1982	C	3910/PAM
160	82014	Westar 4	26 Feb 1982	C	3910/PAM
161	82031	Insat 1A	10 Apr 1982	C	3910/PAM
162	82058	Westar 5	09 Jun 1982	C	3910/PAM
163	82072	Landsat 4	16 Jul 1982	V	3920
164	82082	Anik D1	26 Aug 1982	C	3920/PAM
165	82105	Aurora 1	28 Oct 1982	C	3924
166	83004	IRAS PIX 2	26 Jan 1983	V	3910	PIX 2 was attached to the 2nd stage
167	83030	Satcom 1R	11 Apr 1983	C	3924
168	83041	Goes 06	28 Apr 1983	C	3914
169	83051	Exosat	26 May 1983	V	3914
170	83065	Galaxy 1	28 Jun 1983	C	3920/PAM
171	83077	Telstar 301	28 Jul 1983	C	3920/PAM
172	83094	Satcom 2R	08 Sep 1983	C	3924
173	83098	Galaxy 2	22 Sep 1983	C	3920/PAM
174	84021	Landsat 5 Uosat 2	01 Mar 1984	V	3920
175	84088	AMPTE CCE AMPTE IRM AMPTE UKS	16 Aug 1984	C	3924
176	84101	Galaxy 3	21 Sep 1984	C	3920/PAM
177	84115	Nato 3D	14 Nov 1984	C	3914
178	n/a	Goes G	03 May 1986	C	3914	Failure
179	86069	USA 019 (SDIO)	05 Sep 1986	C	3920
180	87022	Goes 07	26 Feb 1987	C	3924
181	87029	Palapa B2P	20 Mar 1987	C	3920/PAM
182	88008	USA-30 (SDIO)	08 Feb 1988	C	3920 or 3910	220 x 340 x 28.6 x 90
183	89013	GPS BII-01	14 Feb 1989	C	6925
184	89026	Delta Star	24 Mar 1989	C	3920
185	89044	GPS BII-02	10 Jun 1989	C	6925
186	89064	GPS BII-03	18 Aug 1989	C	6925
187	89067	BSB 1	27 Aug 1989	C	4925
188	89085	GPS BII-04	21 Oct 1989	C	6925
189	89089	Cobe	18 Nov 1989	V	5920
190	89097	GPS BII-05	11 Dec 1989	C	6925
191	90008	GPS BII-06	24 Jan 1990	C	6925
192	90015	USA 051 + 052 (LACE + RME; SDIO)	14 Feb 1990	C	6920-8	500 x 500 x 43.1
193	90025	GPS BII-07	26 Mar 1990	C	6925
194	90034	Palapa B2R	13 Apr 1990	C	6925-8
195	90049	Rosat	01 Jun 1990	C	6920-10
196	90051	Insat 1D	12 Jun 1990	C	4925
197	90068	GPS BII-08	02 Aug 1990	C	6925
198	90074	BSB 2	19 Aug 1990	C	6925
199	90088	GPS BII-09	01 Oct 1990	C	6925
200	90093	Inmarsat 2F1	30 Oct 1990	C	6925
201	90103	GPS BIIA-10	26 Nov 1990	C	7925
202	91001	Nato 4A	08 Jan 1991	C	7925
203	91018	Inmarsat 2F2	08 Mar 1991	C	6925
204	91028	ASC 2	13 Apr 1991	C	7925
205	91037	Aurora 2	29 May 1991	C	7925
206	91047	GPS BIIA-11 Losat-X	04 Jul 1991	C	7925
207	92009	GPS BIIA-12	23 Feb 1992	C	7925
208	92019	GPS BIIA-13	10 Apr 1992	C	7925
209	92027	Palapa B4	14 May 1992	C	7925-8
210	92031	EUVE	07 Jun 1992	C	6920-10
211	92039	GPS BIIA-14	07 Jul 1992	C	7925
212	92044	Geotail Duve	24 Jul 1992	C	6925	Duve was attached to the 2nd stage
213	92057	Satcom C4	31 Aug 1992	C	7925
214	92058	GPS BIIA-15	09 Sep 1992	C	7925
215	92066	DFS 3	12 Oct 1992	C	7925
216	92079	GPS BIIA-16	22 Nov 1992	C	7925
217	92089	GPS BIIA-17	18 Dec 1992	C	7925
218	93007	GPS BIIA-18	03 Feb 1993	C	7925
219	93017	GPS BIIA-19 Seds 1	30 Mar 1993	C 17A	7925	Seds 1 was tethered to 2nd stage
220	93032	GPS BIIA-20	13 May 1993	C	7925
221	93042	GPS BIIA-21 PMG	26 Jun 1993	C	7925	PMG was tethered to 2nd stage
222	93054	GPS BIIA-22	30 Aug 1993	C 17	7925
223	93068	GPS BIIA-23	26 Oct 1993	C 17	7925
224	93076	Nato 4B	08 Dec 1993	C	7925
225	94013	Galaxy 1R	19 Feb 1994	C 17	7925-8
226	94016	GPS BIIA-24 Seds 2	10 Mar 1994	C 17	7925	Seds 2 was tethered to 2nd stage
227	94071	Wind 1	01 Nov 1994	C 17B	7925-10
228	95041	Koreasat 1	05 Aug 1995	C 17B	7925	Partial failure: a booster failed to separate
229	95059	Radarsat 1 Surfsat 1	04 Nov 1995 at 14:22 UT	V 2	7920-10	Surfsat is attached to Delta's second stage
230	95074	XTE	30 Dec 1995 at 13:48 UT	C 17A	7920-10
231	96003	Koreasat 2	14 Jan 1996 at 11:11 UT	C 17B	7925
232	96008	NEAR probe	17 Feb 1996 at 20:43 UT	C 17B	7925-8
233	96011	Polar	24 Feb 1996	V 2	7925-10	185 x 50494 km x 86°
234	96019	GPS BIIA-25	28 Mar 1996 at 00:21 UT	C 17A	7925	192 x 20269 km x 34.9°
235	96024	MSX	24 Apr 1996 at 12:27 UT	V 2	7920-10
236	96033	Galaxy 9	24 May 1996 at 01:10 UT	C 17B	7925-8
237	96041	GPS BIIA-26	16 Jul 1996 at 00:50 UT	C 17B	7925
238	96056	GPS BIIA-27	12 Sep 1996 at 08:49 UT	C 17A	7925
239	96062	Mars Global Surveyor	7 Nov 1996	C	7925
240	96068	Mars Pathfinder	4 Dec 1996	C	7925
241	n/a	GPS BIIR-01	17 Jan 1997 at 16:28 UT	C 17A	7925	Failure: was destroyed by controllers after 13 s flight. Caused damages to the launch pad. A split in the casing of one of nine solid rocket motors caused the accident.
242	97020	A: Iridium 08 B: Iridium 07 C: Iridium 06 D: Iridium 05 E: Iridium 04	5 May 1997 at 14:55 UT	V 2	7920-10C	595 x 949 km x 86.7° initial orbit
243	97025	Thor 2	20 May 1997 at 22:39 UT	C 17A	7925
244	97034	A: Iridium 15 B: Iridium 17 C: Iridium 18 D: Iridium 20 E: Iridium 21	9 Jul 1997 at 13:04 UT	V 2	7920-10C
245	97035	GPS BIIR-02	23 Jul 1997	C 17A	7925
246	97043	A: Iridium 26 B: Iridium 25 C: Iridium 24 D: Iridium 23 E: Iridium 22	21 Aug 1997 at 00:38 UT	V	7920-10C
247	97045	ACE	25 Aug 1997 at 14:39 UT	C 17A	7920-8
248	97056	A: Iridium 19 B: Iridium 37 C: Iridium 36 D: Iridium 35 E: Iridium 34	27 Sep 1997 at 01:23 UT	V 2	7920-10C
249	97067	GPS BIIR-02	6 Nov 1997 at 00:30 UT	C 17A	7925
250	97069	A: Iridium 43 B: Iridium 41 C: Iridium 40 D: Iridium 39 E: Iridium 38	9 Nov 1997 at 01:34 UT	V 2	7920-10C
251	97082	A: Iridium 45 B: Iridium 46 C: Iridium 47 D: Iridium 48 E: Iridium 49	20 Dec 1997 at 13:16 UT	V 2	7920-10C
252	98002	Skynet 4D	10 Jan 1998 at 00:32 UT	C 17B	7925
253	98008	A: Globalstar 1 B: Globalstar 2 C: Globalstar 3 D: Globalstar 4	14 Feb 1998 at 14:34 UT	C 17A	7420-10C	with satellite dispenser
254	98010	A: Iridium 50 B: Iridium 56 C: Iridium 52 D: Iridium 53 E: Iridium 54	18 Feb 1998 at 13:58 UT	V 2	7920-10C
255	98019	A: Iridium 55 B: Iridium 57 C: Iridium 58 D: Iridium 59 E: Iridium 60	30 Mar 1998 at 06:02 UT	V 2	7920-10C
256	98023	A: Globalstar 6 B: Globalstar 8 C: Globalstar 14 D: Globalstar 15	24 Apr 1998 at 22:38 UT	C 17A	7420-10C
257	98032	A: Iridium 70 B: Iridium 72 C: Iridium 73 D: Iridium 74 E: Iridium 75	17 May 1998 at 21:16 UT	V 2	7920-10C
258	98035	Thor 3	10 Jun 1998 at 00:35 UT	C 17A	7925
259	FTO	Galaxy 10	27 Aug 1998 at 1:17 UT	C 17B	8930	Failure: explosion 80 seconds after liftoff
260	98051	A: Iridium 77 B: Iridium 79 C: Iridium 80 D: Iridium 81 E: Iridium 82	8 Sep 1998 at 21:13 UT	V 2	7920-10C
261	98061	A: Deep Space B: Sedsat	24 Oct 1998 at 12:08 UT	C 17A	7326	Delta 7326 is a new variant of Delta II which uses three solid Alliant GEM-40 strapons
262	98066	A: Iridium 87 B: Iridium 86 C: Iridium 85 D: Iridium 84 E: Iridium 83	6 Nov 1998 at 13:37 UT	V 2	7920-10C
263	98068	Bonum 1	22 Nov 1998 at 23:54 UT	C 17B	7925
264	98073	Mars Climate Observer	11 Dec 1998	C 17A	7425
265	99001	Mars Polar Lander	3 Jan 1999 at 20:21 UT	C 17B	7425
266	99003	Stardust	7 Feb 1999 at 21:04 UT	C 17A	7426
267	99008	A: Argos B: Orsted C: Sunsat	23 Feb 1999 at 10:30 UT	V 2	7920
268	99020	Landsat 7	15 Apr 1999 at 18:32 UT	V 2	7920-10
269	99024	Orion 3	3 May 1999 at 01:00 UT	C 17B	8930	Failure: second stage failed to complete second burn (breach of the combustion chamber).
270	99031	A: Globalstar 52 B: Globalstar 49 C: Globalstar 25 D: Globalstar 47	10 Jun 1999 at 13:48 UT	C 17B	7420-10
271	99035	Fuse	24 Jun 1999 at 15:44 UT	C 17A	7320
272	99037	A: Globalstar 32 B: Globalstar 30 C: Globalstar 35 D: Globalstar 51	10 Jul 1999 at 08:45 UT	C 17B	7420-10
273	99041	A: Globalstar 26 B: Globalstar 28 C: Globalstar 43 D: Globalstar 48	25 Jul 1999 at 07:46 UT	C 17A	7420-10
274	99043	A: Globalstar 24 B: Globalstar 27 C: Globalstar 53 D: Globalstar 54	17 Aug 1999 at 04:37 UT	C 17B	7420-10
275	99055	GPS BIIR-03	7 Oct 1999 at 12:51 UT	C17A	7925
276	00008	A: Globalstar 60 B: Globalstar 62 C: Globalstar 63 D: Globalstar 64	8 Feb 2000 at 21:24 UT	C17B	7420
277	00017	Image	25 Mar 2000 at 20:34 UT	V 2	7326
278	00025	GPS BIIR-04	11 May 2000 at 01:48 UT	C17A	7925
279	00040	GPS BIIR-05	16 Jul 2000 at 09:17 UT	C17A	7925
280	00048	DM-F3	23 Aug 2000 at 13:05 UT	C17B	8930	The payload is a dummy measuring satellite of 4463 kg (similar to an HS-601). Will support USAF calibration experiments. Mission worth $85 million 190 x 20655 km x 27.6°
281	00071	GPS BIIR-06	10 Nov 2000 at 17:14 UT	C17A	7925
282	00075	A: EO 1 B: SAC C C: Munin	21 Nov 2000 at 18:24 UT	V 2W	7320-10	First dual primary payload flight (DPAF structure)
283	01004	GPS BIIR-07	30 Jan 2001 at 07:55 UT	C 17A	7925
284	01014	Mars Odyssey	7 Apr 2001 at 17:02 UT	C	7925
285	01020	Geolite	18 May 2001 at 17:45 UT	C	7925
286	01027	MAP	30 Jun 2001 at 19:46 UT	C 17B	7425-10C
287	01034	Genesis	8 Aug 2001 at 16:13 UT	C 17A	7326
288	01047	Quickbird 2	18 Oct 2001 at 18:51 UT	V 2W	7320-10C
289	01055	A: Jason 1 B: Timed	7 Dec 2001 at 15:07 UT	V	7920-10C	215 x 1343 km x 66.2°
290	02005	A: Iridium 90 B: Iridium 91 C: Iridium 94 D: Iridium 95 E: Iridium 96	11 Feb 2002 at 17:44 UT	V 2W	7920-10C
291	02022	EOS PM-1	4 May 2002 at 09:55 UT	V 2W	7920-10L	10-m wide fairing
292	02034	Contour (Non-earth orbit satellite)	3 Jul 2002 at 06:47 UT	C 17A	7425-9.5
293	02051	Eutelsat W5	20 Nov 2002 at 22:39 UT	C 37B	4240	First flight for Delta 4M+ (4,2) 538 x 35924 km x 13.49°
294	03002	A: Icesat B: Chipsat	13 Jan 2003 at 00:45 UT	V 2W	7320-10C
295	03005	A: GPS BIIR-08 B: XSS 10	29 Jan 2003 at 18:06 UT	C 17B	7925-9.5
296	03008	DSCS 3-13	11 Mar 2003 at 00:59 UT	C 37B	4040
297	03010	GPS BIIR-09	31 Mar 2003 at 22:09 UT	C 17A	7925
298	03027	Mars Exploration Rover A (MER-2 Spirit)	10 Jun 2003 at 17:58 UT	C 17A	7925-9.5
299	03032	Mars Exploration Rover B (MER-1 Opportunity)	08 Jul 2003 at 02:35 UT	C 17B	7925H	Similar to 7925 but with larger GEM-46 boosters
300	03038	SIRTF (non earth orbit) (Spitzer Space Telescope)	25 Aug 2003 at 0535 UT	C 17B	7920H	No third stage
301	03040	DSCS 3-14	29 Aug 2003 at 23:13 UT	C 37B	4040	234 x 35799 km x 25.49°
302	03058	GPS BIIR-10	21 Dec 2003 at 08:05 UT	C 17A	7925-9.5
303	04009	GPS BIIR-11	20 Mar 2004 at 17:53 UT	C 17B	7925
304	04014	Gravity Probe B	20 Apr 2004 at 18:57 UT	V 2W	7920-10
305	04023	GPS BIIR-12	23 Jun 2004 at 22:54 UT	C 17	7925-9.5
306	04026	EOS Chemistry 1	15 Jul 2004 at 10:02 UT	V 2W	7920-10L
307	04030	Messenger	3 Aug 2004 at 06:15 UT	C 17B	7925H	solar orbit
308	04045	GPS BIIR-13	6 Nov 2004 at 05:39 UT	C 17B	7925-9.5	159 x 20380 km x 39.1°
309	04047	Swift	20 Nov 2004 at 17:16 UT	C 17A	7320-10C	185 x 185 km x 28.5°
310	04050	Demosat 2 Ralphie Sparky	21 Dec 2004 at 21:50 UT	C 37B	4050H	Partial failure: shorter than expected first-stage burn because of oxygen bubbles. The upper stage compensated but finally shutdown too early. Ralphie and Sparky were 2 microsatellites delivered in a 91 km orbit, too low for survival
311	05001	Deep Impact	12 Jan 2005 at 18:47 UT	C 17B	7925-9.5
312	05018	NOAA 18	20 May 2005 at 10:22 UT	V 2W	7320-10+
313	05038	GPS BIIR-M1	26 Sep 2005 at 03:37 UT	C 17A	7925-9.5
314	06016	A: Cloudsat B: Picasso-Cena (Calipso)	28 Apr 2006 at 10:02 UT	V 2W	7420-10
315	06018	Goes 13	24 May 2006 at 22:11 UT	C 37B	4M+(4,2)	6656 x 35173 km x 12°
316	06024	A: USA 187 B: USA 188 C: USA 189	21 Jun 2006 at 22:15 UT	C 17B	7925-9.5	185 x 36221 km x 25.2°
317	06027	USA 184	27 Jun 2006 at 03:33 UT	V 6	4M+(4,2)
318	06042	GPS BIIR-M2	23 Sep 2006 at 18:50 UT	C 17A	7925
319	06047	A: Stereo A B: Stereo B	26 Oct 2006 at 00:52 UT	C 17B	7925-10	non-earth orbit
320	06050	DMSP B5D3-3	04 Nov 2006 at 13:53 UT	V 6	4M
321	06052	GPS BIIR-M3	17 Nov 2006 at 19:12 UT	C 17A	7925-9.5
322	06057	USA 193	14 Dec 2006 at 21:00 UT	V 2W	7920-10	305 x 325 km x 58.5°
323	07004	Themis P1 Themis P2 Themis P3 Themis P4 Themis P5	17 Feb 2007 at 23:01 UT	C17B	7925-10C
324	07023	COSMO-Skymed 1	8 Jun 2007 at 02:34 UT	V 2W	7420-10
325	07034	Phoenix Mars Lander	4 Aug 2007 at 09:26 UT	C 17A	7925-9.5	non-earth orbit
326	07041	WorldView 1	18 Sep 2007 at 18:35 UT	V 2W	7925-10C
327	07043	Dawn	27 Sep 2007 at 11:34 UT	C	7925-H	non-earth orbit
328	07047	GPS BIIR-M4	17 Oct 2007 at 12:23 UT	C	7925-9.5
329	07054	DSP 3-10	11 Nov 2007 at 01:50 UT	C	4050H	delivered the satellite in GEO
330	07059	COSMO-Skymed 2	9 Dec 2007 at 02:31 UT	V 2W	7420-10
331	07062	GPS BIIR-M5	20 Dec 2007 at 20:04 UT	C 17A	7925-9.5
332	08012	GPS BIIR-M6	15 Mar 2008 at 06:09 UT	C 17A	7925-9.5
333	08029	Glast	11 Jun 2008 at 16:05 UT	C 17B	7920H
334	08032	Jason 2	20 Jun 2008 at 07:46 UT	V 2W	7320-10
335	08042	Orbview 5	6 Sep 2008 at 18:51 UT	V 2W	7420-10
336	08054	COSMO-Skymed 3	25 Oct 2008 at 02:28 UT	V 2W	7420-10
337	09001	USA 202	17 Jan 2009 at 02:47 UT	C 37	4050H	35943 x 38077 km x 3°
338	09005	NOAA 19	6 Feb 2008 at 10:22 UT	V 2W	7320-10C
339	09011	Kepler	7 Mar 2009 at 03:20 UT	C 17B	7925-10L	Non-earth orbit
340	09014	GPS BIIR-M7	24 Mar 2009 at 08:34 UT	C 17A	7925-9.5
341	09023	STSS-ATRR	05 May 2009 at 20:24 UT	V 2W	7920-10C
342	09033	Goes 14	27 Jun 2009 at 22:51 UT	C 37B	4M+(4,2)	6634 x 35155 km x 12.0°
343	09043	GPS BIIR-M8	17 Aug 2009 at 10:35 UT	C 17A	7925-9.5
344	09052	STSS1 STSS 2	25 Sep 2009 at 12:20 UT	C 17B	7920-10C
345	09055	Worldview 2	08 Oct 2009 at 18:51 UT	V 2W	7920-10
346	09068	WGS SV 3	06 Dec 2009 at 01:47 UT	C 37B	4M+ (5,4)
347	09071	WISE	14 Dec 2009 at 14:09 UT	V 2W	7320-10C
348	10008	Goes 15	4 Mar 2010 at 23:57 UT	C 37	4M+(4,2)
349	10022	GPS BIIF-01	28 May 2010 at 03:00 UT	C 37B	4M+(4,2)
350	10060	COSMO-Skymed 4	6 Nov 2010 at 02:20 UT	V 2W	7420-10
351	10063	USA 223	21 Nov 2010 at 22:58 UT	C 37B	4050H
352	11002	KH 12-6	20 Jan 2011 at 22:10 UT	V 6	4H
353	11011	USA 227	11 Mar 2011 at 23:38 UT	C 37B	4M+(4,2)
354	11024	SAC D	10 Jun 2011 at 14:20 UT	V 2W	7320-10
355	11036	GPS BIIF-02	15 Jul 2011 at 06:41 UT	C 37B	4M+(4,2)
356	11046	Grail A Grail B	10 Sep 2011 at 13:08 UT	C 17B	7920H-10	non-earth orbit Last Delta 2 from Cape Canaveral
357	11061	A: NPP Also carries 6 cubesats: AubieSat 1 (http://space.auburn.edu/) M-Cubed (http://umcubed.org/) E1PU2 (http://www.ssel.montana.edu/explorer-1_prime/) RAX 2 (http://rax.enging.umich.edu/) Dice 1 & Dice 2 (http://www.sdl.usu.edu/programs/dice)	28 Oct 2011 at 09:48 UT	V 2W	7920-10
358	12003	WGS SV 4	20 Jan 2012 at 00:38 UT	C	4
359	12013	USA 234	3 Apr 2012 at 23:12 UT	V	4M+(5,2)
360	12034	USA 237	29 Jun 2012 at 13:15 UT	C	4H upgraded
361	12053	GPS BIIF-03	4 Oct 2012 at 12:10 UT	C	4M+(4,2)
362	13024	WGS SV 5	25 May 2013 at 00:27 UT	C	4M+(5,4)	439x66900 km x 24°
363	13041	WGS SV 6	8 Aug 2013 at 00:29 UT	C 37	4M+(5,4)
364	13043	USA 245	28 Aug 2013 at 16:03 UT	V	4H
365	14008	GPS BIIF-05	21 Feb 2014 at 01:59 UT	C	4M+(4,2)
366	14026	GPS BIIF-06	18 May 2014 at 00:03 UT	C	4M+(4,2)
367	14035	OCO 2	2 Jul 2014 at 06:56 UT	V	7320
368	14043	A: GSSAP 1 B: GSSAP 2 C: USA 255	28 Jul 2014 at 23:28 UT	C	4M+(4,2)
369	14077	Orion EFT 1	5 Dec 2014	C	4H	Orion capsule maiden flight
370	15003	A: SMAP B: Firebird 3 C: Firebird 4 D: Grifex E: Polysat CP10	31 Jan 2015 at 14:22 UT	V	7320	661 x 685 km
371	15013	GPS BIIF-09	25 Mar 2015 at 18:36 UT	C	4M+(4,2)
372	15036	WGS SV 7	24 Jul 2015 at 00:07 UT	C	4M+(5,4)
373	16010	USA 267	10 Feb 2016 at 11:40 UT	V	4M+ (5,2)
374	16036	USA 268	11 Jun 2016 at 17:11 UT	C	4H upgraded
375	16052	A: GSSAP 3 B: GSSAP 4	19 Aug 2016 at 04:52 UT	C	4M+(4,2)
376	16075	WGS SV 8	7 Dec 2016 at 23:53 UT	C	4M+(5,4)
377	17016	WGS SV 9	19 Mar 2017 at 00:18 UT	C	4M+(5,4)
378	17073	A: JPSS 1 5 cubesats	18 Nov 2017 at 09:47 UT	V	7920-10C
379	18005	USA 281	12 Jan 2018 at 22:11 UT	C	4M+(5,2)
380	18065	Parker Solar Probe	12 Aug 2018 at 09:31 UT	C	4H
381	18070	A: Icesat 2 B: Surfsat C: Polysat CP7 D: Elfin B E: Elfin A	15 Sep 2018 at 13:02 UT	V	7420-10	Final mission of Delta 2
381	19004	USA 290	19 Jan 2019 at 19:10 UT	V	4H
382	19014	WGS SV 10	16 Mar 2019 at 00:26 UT	C	4M+(5,4)
383	19056	GPS BIII-02	22 Aug 2019 at 13:06 UT	C	4M+(4,2)
384	20095	USA 311	11 Dec 2020 at 01:09 UT	C	4H
385	21032	USA 314	26 Apr 2021 at 20:47 UT	V	4H
386	22117	USA 338	24 Sep 2022 at 22:25 UTC	V	4H
387	23089	USA 345	22 Jun 2023 at 09:18 UTC	C	4H

Notes: in the launcher date & site column C stands for Cape Canaveral and V for Vandenberg.

---