List of GPS satellites

As of June 2020, 75 Global Positioning System navigation satellites have been launched, 31 of which are operational, 9 in reserve, 3 being tested, 30 have been retired and 2 were lost at launch. The constellation requires a minimum of 24 operational satellites, and the official target count is 33. The GPS receiver needs 4 satellites to work out your position in 3-dimensions.[1]

Samples of three GPS satellites' orbits over a five-year period (2013 to 2018)
USA-242 · USA-239 · USA-151 · Earth

SVNs are "space vehicle numbers" which are serial numbers assigned to each GPS satellite. PRNs are the "pseudo-random noise" sequences, or Gold codes, that each satellite transmits to differentiate itself from other satellites in the active constellation.

Satellites

Satellites by launch date

Satellite	Launch (UTC)	Carrier rocket	Launch site	Block	№	SVN	PRN	Slot	Status
Satellite	Remarks
OPS 5111	22 February 1978 23:44	Atlas E/F SGS-1	VAFB, SLC-3E	I	1[2]	01	04		Retired 17 July 1985[3]
OPS 5112	13 May 1978 10:34	Atlas E/F SGS-1	VAFB, SLC-3E	I	2[4]	02	07		Retired 12 February 1988[3]
OPS 5113	7 October 1978 00:28	Atlas E/F SGS-1	VAFB, SLC-3E	I	3[5]	03	06		Retired 18 May 1992[3]
OPS 5114	11 December 1978 03:59	Atlas E/F SGS-1	VAFB, SLC-3E	I	4[6]	04	08		Retired 14 October 1989[3]
OPS 5114	Used for testing between February 1990 and May 1990[3]
OPS 5117	9 February 1980 23:08	Atlas E/F SGS-1	VAFB, SLC-3E	I	5[7]	05	05		Retired 11 May 1984[3]
OPS 5118	26 April 1980 22:00	Atlas E/F SGS-1	VAFB, SLC-3E	I	6[8]	06	09		Retired 6 March 1991[3]
N/A (Navstar 7)	19 December 1981 01:10	Atlas E/F SGS-1	VAFB, SLC-3E	I	7	07	10		N/A[3]
N/A (Navstar 7)	Failed to orbit
OPS 9794	14 July 1983 10:21	Atlas E/F SGS-2	VAFB, SLC-3W	I	8[9]	08	11		Retired 4 May 1993[3]
USA-1	13 June 1984 11:37	Atlas E/F SGS-2	VAFB, SLC-3W	I	9[10]	09	13		Retired 28 February 1994[3]
USA-1	Used for testing between February 1994 and June 1994[3]
USA-5	8 September 1984 21:41	Atlas E/F SGS-2	VAFB, SLC-3W	I	10[11]	10	12		Retired 18 November 1995[3]
USA-5	Used for testing between November 1995 and March 1996[3]
USA-10	9 October 1985 02:53	Atlas E/F SGS-2	VAFB, SLC-3W	I	11[12]	11	03		Retired 13 April 1994[3]
N/A (Block II prototype)				II	0	12			N/A
N/A (Block II prototype)	Qualification vehicle built by Rockwell International to secure Block II contract; never launched
USA-35	14 February 1989 18:30	Delta II 6925-9.5	CCAFS, LC-17A[13]	II	1[14]	14	14		Retired 26 March 2000[15]
USA-38	10 June 1989 22:30	Delta II 6925-9.5	CCAFS, LC-17A[13]	II	2[16]	13	02	B3	Retired 22 February 2004[15]
USA-42	18 August 1989 05:58	Delta II 6925-9.5	CCAFS, LC-17A[13]	II	3[17]	16	16		Retired 13 October 2000[15]
USA-47	21 October 1989 09:31	Delta II 6925-9.5	CCAFS, LC-17A[13]	II	4[18]	19	19	A5	Retired 16 March 2001[15]
USA-49	11 December 1989 18:10	Delta II 6925-9.5	CCAFS, LC-17B[13]	II	5[19]	17	17	D3	Retired 23 February 2005[15]
USA-50	24 January 1990 22:55	Delta II 6925-9.5	CCAFS, LC-17A[13]	II	6[20]	18	18		Retired 18 August 2000[15]
USA-54	26 March 1990 02:45	Delta II 6925-9.5	CCAFS, LC-17A[13]	II	7[21]	20	20		Retired 21 May 1996[15]
USA-54	Decommissioned after twice changing frequency without being commanded to
USA-63	2 August 1990 05:39	Delta II 6925-9.5	CCAFS, LC-17A[13]	II	8[22]	21	21	E2	Retired 25 September 2002[15]
USA-64	1 October 1990 21:56	Delta II 6925-9.5	CCAFS, LC-17A[13]	II	9[23]	15	15	D5	Retired 17 November 2006[15]
USA-64	Used only for testing from November 2006 until March 2007[15]
USA-66	26 November 1990 21:39	Delta II 7925-9.5	CCAFS, LC-17A	IIA	1[24]	23	23 32	E5	Retired 25 January 2016[25]
USA-66	Decommissioned from active service using PRN23 on 13 February 2004. Set usable with PRN32 on 26 February 2008.[15]
USA-71	4 July 1991 02:32	Delta II 7925-9.5	CCAFS, LC-17A	IIA	2[26]	24	24	D1	Retired 30 September 2011[27]
USA-79	23 February 1992 22:29	Delta II 7925-9.5	CCAFS, LC-17A	IIA	3[28]	25	25	A2	Retired 18 December 2009[29]
USA-80	10 April 1992 03:20	Delta II 7925-9.5	CCAFS, LC-17B	IIA	4[30]	28	28	C2	Retired 4 November 1996[15]
USA-80	Retired early, replaced by USA-117
USA-83	7 July 1992 09:20	Delta II 7925-9.5	CCAFS, LC-17B	IIA	5[31]	26	26	F5	Retired 6 January 2015[32]
USA-84	9 September 1992 08:57	Delta II 7925-9.5	CCAFS, LC-17A	IIA	6[33]	27	27	A6	Retired 10 August 2011[29] [34]
USA-84	Final command and disposal on 18 April 2017
USA-85	22 November 1992 23:54	Delta II 7925-9.5	CCAFS, LC-17A	IIA	7[35]	32	31 01 30 NA	F4	17 March 2008[29] In Reserve[34]
USA-85	PRN changed from 32 to 01 in January 1993 due to receiver problems. Decommissioned 17 March 2008 and removed from slot F4. Briefly resumed L-band transmission in 2014 but signal unusable.[15][29]
USA-87	18 December 1992 22:16	Delta II 7925-9.5	CCAFS, LC-17B	IIA	8[36]	29	29	F5	Retired 23 October 2007[37]
USA-88	3 February 1993 02:55	Delta II 7925-9.5	CCAFS, LC-17A	IIA	9[38]	22	22	B1	Retired 3 December 2002[15]
USA-90	30 March 1993 03:09	Delta II 7925-9.5	CCAFS, LC-17A	IIA	10[39]	31	31	C3	Retired 24 October 2005
USA-91	13 May 1993 00:07	Delta II 7925-9.5	CCAFS, LC-17A	IIA	11[40]	37	07 01 24	C4	20 December 2007 In Reserve[34]
USA-91	Switched to PRN01 in October 2008 but was unusable.[15] Switched to PRN24 in April 2012 but was unusable.[41]
USA-92	26 June 1993 13:27	Delta II 7925-9.5	CCAFS, LC-17A	IIA	12[42]	39	09	A5	Retired 19 May 2014[29]
USA-94	30 August 1993 12:38	Delta II 7925-9.5	CCAFS, LC-17B	IIA	13[43]	35	05 30	B5	28 March 2013[15] In Reserve[34]
USA-94	Decommissioned from active service using PRN05 in March 2009. Resumed activity using PRN30 in August 2011.[15]
USA-96	26 October 1993 17:04	Delta II 7925-9.5	CCAFS, LC-17B	IIA	14[44]	34	04 18	D6	Retired 9 October 2019[45]
USA-96	Decommissioned from active service using PRN04 in November 2015.[46] Reactivated in March 2018 using PRN18.[47] Decommissioned from active service using PRN18 in October 2019.[48]
USA-100	10 March 1994 03:40	Delta II 7925-9.5	CCAFS, LC-17A	IIA	15[49]	36	06 04[50]	C6	21 February 2014[29] In Reserve[34]
USA-117	28 March 1996 00:21	Delta II 7925-9.5	CCAFS, LC-17B	IIA	16[51]	33	03	C5	Retired 2 August 2014[52]
USA-126	16 July 1996 00:50	Delta II 7925-9.5	CCAFS, LC-17A	IIA	17[53]	40	10	E6	16 July 2015[54] In Reserve[34]
USA-128	12 September 1996 08:49	Delta II 7925-9.5	CCAFS, LC-17A	IIA	18[55]	30	30	B2	Retired 20 July 2011[29]
N/A (GPS IIR-1)	17 January 1997 16:28	Delta II 7925-9.5	CCAFS, LC-17A	IIR	1	42	12		N/A[29]
N/A (GPS IIR-1)	Failed to orbit
USA-132	23 July 1997 03:43	Delta II 7925-9.5[56]	CCAFS, LC-17A	IIR	2	43	13	F6	Operational[29]
USA-135	6 November 1997 00:30	Delta II 7925-9.5	CCAFS, LC-17A	IIA	19[57]	38	08	A3	30 October 2014[58] In Reserve[34]
USA-145	7 October 1999 12:51	Delta II 7925-9.5[59]	CCAFS, SLC-17A	IIR	3	46	11	D5	Operational[29]
USA-150	11 May 2000 01:48	Delta II 7925-9.5[60]	CCAFS, SLC-17A	IIR	4	51	20	E4	Operational[29]
USA-151	16 July 2000 09:17	Delta II 7925-9.5[61]	CCAFS, SLC-17A	IIR	5	44	28	B3	Operational[29]
USA-154	10 November 2000 17:14	Delta II 7925-9.5[62]	CCAFS, SLC-17A	IIR	6	41	14	F5	Retired 9 July 2020[63]
USA-156	30 January 2001 07:55	Delta II 7925-9.5[64]	CCAFS, SLC-17A	IIR	7	54	18	E4	Retired 5 March 2018[65]
USA-166	29 January 2003 18:06	Delta II 7925-9.5[66]	CCAFS, SLC-17B	IIR	8	56	16	B1	Operational[29]
USA-168	31 March 2003 22:09	Delta II 7925-9.5[67]	CCAFS, SLC-17A	IIR	9	45	21	D3	Operational[29]
USA-175	21 December 2003 08:05	Delta II 7925-9.5[68]	CCAFS, SLC-17A	IIR	10	47	22	E6	Operational[29]
USA-177	20 March 2004 17:53	Delta II 7925-9.5[69]	CCAFS, SLC-17B	IIR	11	59	19	C5	Operational[29]
USA-178	23 June 2004 22:54	Delta II 7925-9.5[70]	CCAFS, SLC-17B	IIR	12	60	23	F4	Retired 2 March 2020[71][29]
USA-180	6 November 2004 05:39	Delta II 7925-9.5[72]	CCAFS, SLC-17B	IIR	13	61	02	D1	Operational[29]
USA-183	26 September 2005 03:37	Delta II 7925-9.5[73]	CCAFS, SLC-17A	IIRM	1	53	17	C4	Operational[29]
USA-183	Also known as IIR-14; first to broadcast L2C signal.
USA-190	25 September 2006 18:50	Delta II 7925-9.5[74]	CCAFS, SLC-17A	IIRM	2	52	31	A2	Operational[29]
USA-190	Also known as IIR-15; first satellite to complete a fully operational 32-satellite constellation
USA-192	17 November 2006 19:12	Delta II 7925-9.5[75]	CCAFS, SLC-17A	IIRM	3	58	12	B4	Operational[29]
USA-192	Also known as IIR-16
USA-196	17 October 2007 12:23	Delta II 7925-9.5[76]	CCAFS, SLC-17A	IIRM	4	55	15	F2	Operational[29]
USA-196	Also known as IIR-17
USA-199	20 December 2007 20:04	Delta II 7925-9.5[77]	CCAFS, SLC-17A	IIRM	5	57	29	C1	Operational[29]
USA-199	Also known as IIR-18
USA-201	15 March 2008 06:10	Delta II 7925-9.5[78]	CCAFS, SLC-17A	IIRM	6	48	07	A4	Operational[29]
USA-201	Also known as IIR-19
USA-203	24 March 2009 08:34	Delta II 7925-9.5[79]	CCAFS, SLC-17A	IIRM	7	49	01 27 30 06 NA	B6	In Reserve
USA-203	Also known as IIR-20; broadcasts demonstration L5 signal. Never entered service due to poor quality signal; decommissioned on 6 May 2011 but subsequently reactivated for testing. Broadcast PRN-01 before decommissioning, PRN-27 after reactivation. Shifted to PRN-30 as of 8 May 2013 and to PRN-06 as of 3 April 2014. Currently not assigned a PRN.[29]
USA-206	17 August 2009 10:35	Delta II 7925-9.5	CCAFS, SLC-17A	IIRM	8	50	05	E3	Operational[29]
USA-206	Originally scheduled for launch in 1999 as IIR-3 but damaged during processing.[80] Also known as IIR-21; L5 services disconnected from J2 port before launch. Final Delta II launch with a United States Air Force payload.[81] Final launch from SLC-17A, final Delta II 7925.
USA-213	28 May 2010 03:00	Delta IV M+(4,2)	CCAFS, SLC-37B	IIF	1	62	25	B2	Operational[29]
USA-213	First to broadcast operational L5 signal.
USA-232	16 July 2011 06:41	Delta IV M+(4,2)	CCAFS, SLC-37B	IIF	2	63	01	D2	Operational[29]
USA-239	4 October 2012 12:10	Delta IV M+(4,2)	CCAFS, SLC-37B	IIF	3	65	24	A1	Operational[29]
USA-242	15 May 2013 21:38	Atlas V 401	CCAFS, SLC-41	IIF	4	66	27	C2	Operational[29]
USA-248	21 February 2014 01:59	Delta IV M+(4,2)	CCAFS, SLC-37B	IIF	5	64	30	A3	Operational[29]
USA-251	17 May 2014 00:03	Delta IV M+(4,2)	CCAFS, SLC-37B	IIF	6	67	06	D4	Operational[29]
USA-256	2 August 2014 03:23	Atlas V 401	CCAFS, SLC-41	IIF	7	68	09	F3	Operational[29]
USA-258	29 October 2014 17:21	Atlas V 401	CCAFS, SLC-41	IIF	8	69	03	E1	Operational[29]
USA-260	25 March 2015 18:36	Delta IV M+(4,2)	CCAFS, SLC-37B	IIF	9	71	26	B5	Operational[29]
USA-262	15 July 2015 15:36	Atlas V 401	CCAFS, SLC-41	IIF	10	72	08	C3	Operational[29]
USA-265	31 October 2015 16:13	Atlas V 401	CCAFS, SLC-41	IIF	11	73	10	E2	Operational[82]
USA-266	5 February 2016 13:38	Atlas V 401	CCAFS, SLC-41	IIF	12	70	32	F1	Operational[83]
USA-289 Vespucci[84]	23 December 2018 13:51	Falcon 9 Block 5	CCAFS, SLC-40	III	1	74	04	A6	Operational[85]
USA-293 Magellan	22 August 2019 13:06	Delta IV M+(4,2)	CCAFS, SLC-37B	III	2	75	18	D3	Operational[86]
USA-304 Columbus [87]	30 June 2020 20:10:46	Falcon 9 Block 5	CCAFS, SLC-40	III	3	76	23	E4	Operational

Satellites by block

Block	Launched	Operational	Testing/ Reserve	Retired	Launch Failures	Manufacturer	Remarks
Block I	11	0	0	10	1	Rockwell
Block II	9	0	0	9	0	Rockwell	One prototype was never launched
Block IIA	19	0	6	13	0	Rockwell
Block IIR	13	9	0	3	1	Lockheed Martin
Block IIRM	8	7	1	0	0	Lockheed Martin
Block IIF	12	12	0	0	0	Boeing
Block III	3	3	0	0	0	Lockheed Martin
Block IIIF	0	0	0	0	0	Lockheed Martin
Total	75	31	7	35	2

Orbital slots (by SVN)

Refer to GPS Constellation Status for the most up-to-date information.

As of 17 April 2020
Slot	Plane
Slot	A	B	C	D	E	F
1	65	56	57	61	69	70
2	52	62	66	63	73	55
3	64	44	72	45	50	68
4	48	58	53	67	76
5		71	59	46
6	74			75	47	43

Numbers in parentheses refer to non-operational satellites.

Once launched, GPS satellites do not change their plane assignment but slot assignments are somewhat arbitrary and are subject to change.

Cross reference of PRNs to satellite blocks

The following table is for the purpose of making it possible to determine the block associated with a PRN by looking at one column in one table rather than having to search through all rows of three tables. Thus this table can be used to quickly and easily determine the number of satellites in orbit and health associated with each block.

Cross reference of PRNs to blocks
PRN	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	NA
IIA				D														D															R (x8)
IIR		H									H		H	D		H			H	H	H	H	D					H
IIR-M					H		H					H			H		H												H		H		R
IIF	H		H			H		H	H	H														H	H	H	H			H		H
III				H														H

Legend:

H – In orbit and healthy

R – Placed in reserve

U – Unhealthy and unusable

D – Decommissioned

T – Launched and undergoing testing

PRN to SVN history

This section is for the purpose of making it possible to determine the PRN associated with a SVN at a particular epoch. For example, SVN 049 had been assigned PRNs 01, 24, 27, and 30 at different times of its lifespan, whereas PRN 01 had been assigned to SVNs 032, 037, 049, 035, and 063 at different epochs. This information can be found in the IGS ANTEX file, which uses the convention "GNN" and "GNNN" for PRNs and SVNs, respectively. For example, SVN 049 is described as:

BLOCK IIR-M         G01                 G049      2009-014A TYPE / SERIAL NO    
  2009     3    24     0     0    0.0000000                 VALID FROM          
  2011     5     6    23    59   59.9999999                 VALID UNTIL         
BLOCK IIR-M         G24                 G049      2009-014A TYPE / SERIAL NO    
  2012     2     2     0     0    0.0000000                 VALID FROM          
  2012     3    14    23    59   59.9999999                 VALID UNTIL         
BLOCK IIR-M         G24                 G049      2009-014A TYPE / SERIAL NO    
  2012     8     9     0     0    0.0000000                 VALID FROM          
  2012     8    22    23    59   59.9999999                 VALID UNTIL         
BLOCK IIR-M         G27                 G049      2009-014A TYPE / SERIAL NO    
  2012    10    18     0     0    0.0000000                 VALID FROM          
  2013     5     9    23    59   59.9999999                 VALID UNTIL         
BLOCK IIR-M         G30                 G049      2009-014A TYPE / SERIAL NO    
  2013     5    10     0     0    0.0000000                 VALID FROM

whereas for PRN 01 the following excerpt is relevant:

BLOCK IIA           G01                 G032      1992-079A TYPE / SERIAL NO    
  1992    11    22     0     0    0.0000000                 VALID FROM          
  2008    10    16    23    59   59.9999999                 VALID UNTIL         
BLOCK IIA           G01                 G037      1993-032A TYPE / SERIAL NO    
  2008    10    23     0     0    0.0000000                 VALID FROM          
  2009     1     6    23    59   59.9999999                 VALID UNTIL         
BLOCK IIR-M         G01                 G049      2009-014A TYPE / SERIAL NO    
  2009     3    24     0     0    0.0000000                 VALID FROM          
  2011     5     6    23    59   59.9999999                 VALID UNTIL         
BLOCK IIA           G01                 G035      1993-054A TYPE / SERIAL NO    
  2011     6     2     0     0    0.0000000                 VALID FROM          
  2011     7    12    23    59   59.9999999                 VALID UNTIL         
BLOCK IIF           G01                 G063      2011-036A TYPE / SERIAL NO    
  2011     7    16     0     0    0.0000000                 VALID FROM

A table extracted out of the ANTEX file is made available by the Bernese GNSS Software.

Planned launches

Block III

Date	Rocket	Launch site	Satellite	SVN	Remarks
30 September 2020[88][89][90]	Falcon 9 Block 5	CCAFS, SLC-40 [88]	GPS III-04	77	Space vehicle manufacturing contract awarded January 2012.[91] Undergoing thermal vacuum testing in December 2018.[92] The Request For Proposal (RFP) for launch services was published in June 2017, and proposals were due in August 2017.[93] Launch services for SV-04 through SV-06 were to be jointly awarded to the same winning bidder.[94][93] In March 2018, the Air Force announced it had awarded the contract to SpaceX (over another unnamed competing bidder).[95]
January 2021[96]	Falcon 9 Block 5[97]	CCAFS, SLC-40	GPS III-05	78	Space vehicle manufacturing contract awarded February 2013.[98] Core mating in progress in December 2018.[92] Launch services for SV-04 through SV-06 were jointly awarded.[94][93]
2021[89]	Falcon 9 Block 5[97]	CCAFS, SLC-40 or KSC, LC-39A[99]	GPS III-06	79	Space vehicle manufacturing contract awarded February 2013.[98] In September 2018, the space vehicle was integrating harnesses.[100] Launch services for SV-04 through SV-06 were jointly awarded.[93]
2021[89]		CCAFS (TBD)	GPS III-07	80	Space vehicle manufacturing contract awarded February 2013.[98] It was in assembly in December 2018.[92]
2022[89]		CCAFS (TBD)	GPS III-08	81	Space vehicle manufacturing contract awarded February 2013.[98] The satellite was named "Katherine Johnson" in June 2020 following its successful core mate assembly.[101]
2022[89]		CCAFS (TBD)	GPS III-09	82	Space vehicle manufacturing contract awarded September 2016.[102]
2023[89]		CCAFS (TBD)	GPS III-10	83	Space vehicle manufacturing contract awarded September 2016.[102]

Block IIIF

Projected Available For Launch ("AFL") Date	Rocket	Type	Launch site	Satellite	Remarks
FY2026[89]	(TBD)	(TBD)	CCAFS (TBD)	GPS IIIF-01
				GPS IIIF-02
				GPS IIIF-03
FY2027[89]				GPS IIIF-04
				GPS IIIF-05
				GPS IIIF-06
FY2028[89]				GPS IIIF-07	Technology Insertion Point
				GPS IIIF-08
				GPS IIIF-09
				GPS IIIF-10
FY2029[89]				GPS IIIF-11
FY2029[89]				GPS IIIF-12
FY2030[89]				GPS IIIF-13	Technology Insertion Point
FY2030[89]				GPS IIIF-14
FY2031[89]				GPS IIIF-15
FY2031[89]				GPS IIIF-16
FY2032[89]				GPS IIIF-17
FY2032[89]				GPS IIIF-18
FY2033[89]				GPS IIIF-19	Technology Insertion Point
FY2033[89]				GPS IIIF-20
FY2034[89]				GPS IIIF-21
FY2034[89]				GPS IIIF-22

gollark: For the more budget-conscious, you could just use a single-socket setup.

gollark: So I suppose that would be a reasonably high-end setup.

gollark: When Epyc Rome comes out, you'll be able to get 64-core CPUs, and they'll probably work dual-socket.

gollark: Slightly.

gollark: Well, that might be a teeny bit overkill.

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"NGA Current GPS Satellite Data". Retrieved 24 September 2011.
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"Navstar IIA-05". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.
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"NANU2015091". Celestrak. Retrieved 23 March 2018.
"NANU2018015". Celestrak. Retrieved 23 March 2018.
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"NANU 2015-093". Retrieved 10 December 2015. This article incorporates text from this source, which is in the public domain.
"NANU 2016-011". Retrieved 9 March 2016. This article incorporates text from this source, which is in the public domain.
Clark, Stephen (23 December 2018). "SpaceX closes out year with successful GPS satellite launch". Spaceflight Now. Retrieved 24 December 2018.
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"NANU 2020-015". Retrieved 2 April 2020. This article incorporates text from this source, which is in the public domain.
https://www.losangeles.af.mil/News/Article-Display/Article/2082387/gps-iii-space-vehicle-03-safely-arrives-in-florida/
Clark, Stephen (2 June 2020). "Launch Schedule". Spaceflight Now. Retrieved 2 June 2020.
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Divis, Dee Ann (28 September 2017). "GNSS Program Update: Dozens of NavSats Set to Launch in Next 40 Months". InsideGNSS.com. Gibbons Media & Research LLC. Archived from the original on 4 October 2017. Retrieved 4 October 2017.
"U.S. Air Force Awards Lockheed Martin Contract for Third and Fourth GPS III Satellites". Lockheed Martin. 12 January 2012. Retrieved 3 January 2017.
Whitney, Steve (5 December 2018). "GPS Enterprise Status and Modernization" (PDF). U.S. Air Force Space and Missile Systems Center Public Affairs Office. Retrieved 22 December 2018. This article incorporates text from this source, which is in the public domain.
"EELV Phase 1A Request for Proposal (RFP) 1A-4". FedBizOpps.gov. Department of the Air Force. 29 June 2017. Retrieved 6 July 2017. This article incorporates text from this source, which is in the public domain.
"Final RFP Released for Launch Services Contract". U.S. Air Force Space and Missile Systems Center Public Affairs Office. 29 June 2017. Retrieved 2 December 2017. This article incorporates text from this source, which is in the public domain.
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Clark, Stephen (30 January 2020). "SpaceX launches its first mission for the U.S. Space Force". Spaceflight Now. Retrieved 1 July 2020.
"Air Force Awards Launch Services Contracts to SpaceX and ULA". LosAngeles.af.mil. US Air Force Space and Missile Command Public Affairs. 14 March 2018. Retrieved 16 March 2018. This article incorporates text from this source, which is in the public domain.
"Air Force Awards Lockheed Martin Contracts for Next Set of GPS III Satellites". GPS World. 26 February 2013. Retrieved 2 December 2017.
Foust, Jeff (8 December 2017). "New and improved Florida pad ready to resume Falcon 9 launches". SpaceNews. Retrieved 18 December 2017.
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"GPS III SV-08 Core Mate Complete, Space Vehicle Named for NASA Trailblazer". Space and Missile Systems Center. Los Angeles Air Force Base. 10 June 2020. Retrieved 12 June 2020. This article incorporates text from this source, which is in the public domain.
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External links

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

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[4] "Navstar 2". NASA. Retrieved 24 April 2013. This article incorporates text from this source, which is in the public domain.

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[6] "Navstar 4". NASA. Retrieved 24 April 2013. This article incorporates text from this source, which is in the public domain.

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[D6000-13] Wade, Mark. "Delta 6925". Encyclopedia Astronautica. Archived from the original on 22 May 2013. Retrieved 25 April 2013.

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[NANU-27] "NANU 2011088". Archived from the original on 8 April 2013. Retrieved 4 November 2011. This article incorporates text from this source, which is in the public domain.

[28] "Navstar IIA-03". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[NGA-29] "NGA Current GPS Satellite Data". Retrieved 24 September 2011.

[30] "Navstar IIA-04". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

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[33] "Navstar IIA-06". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[NAVSTARStatus-34] "NAVSTAR GPS Constellation Status". University of New Brunswick. 4 December 2015. Retrieved 14 April 2016.

[35] "Navstar IIA-07". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[36] "Navstar IIA-08". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[37] "2007144 NANU". Retrieved 28 July 2015.

[38] "Navstar IIA-09". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[39] "Navstar IIA-10". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[40] "Navstar IIA-11". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[41] "Archive of 2012 NANU Messages". USNO. Retrieved 28 June 2015. This article incorporates text from this source, which is in the public domain.

[42] "Navstar IIA-12". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[43] "Navstar IIA-13". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[44] "Navstar IIA-14". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[45] "Notice Advisory to GPS Users". www.navcen.uscg.gov. Retrieved 28 October 2019. This article incorporates text from this source, which is in the public domain.

[NANU2015091-46] "NANU2015091". Celestrak. Retrieved 23 March 2018.

[NANU2018015-47] "NANU2018015". Celestrak. Retrieved 23 March 2018.

[48] "Notice Advisory to GPS Users". www.navcen.uscg.gov. Retrieved 28 October 2019. This article incorporates text from this source, which is in the public domain.

[49] "Navstar IIA-15". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[NANU2019104-50] "NANU2019104". Celestrak. Retrieved 26 July 2019.

[51] "Navstar IIA-16". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[52] "NANU 2014-063". Retrieved 28 June 2015.

[53] "Navstar IIA-17". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[54] "NANU 2015-069". Retrieved 16 July 2015.

[55] "Navstar IIA-18". NASA. Retrieved 25 April 2013. This article incorporates text from this source, which is in the public domain.

[56] "Navstar 43". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[57] "Navstar 38". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[58] "NANU 2014-083". Retrieved 28 June 2015.

[59] "Navstar 46". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[60] "Navstar 47". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[61] "Navstar 48". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[62] "Navstar 49". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[63] "NANU2020034". Retrieved 17 July 2020.

[64] "Navstar 50". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[65] "NANU2018009". Retrieved 6 March 2018.

[66] "Navstar 51". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[67] "Navstar 52". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[68] "Navstar 53". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[69] "Navstar 54". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[70] "Navstar 55". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[71] "GPS constellation changes with addition of second GPS III satellite".

[72] "Navstar 56". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[73] "Navstar 57". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[74] "GPS 2R-15". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[75] "Navstar 59". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[76] "GPS 2R-17". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[77] "GPS 2R-18". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[78] "Navstar 62". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[79] "Navstar 62". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[80] Harland, David. Space Systems Failures: Disasters and Rescues of Satellites, Rocket and Space Probes (2005th ed.). p. 325. ISBN 978-0387215198.

[81] "Navstar 63". NASA. Retrieved 26 April 2013. This article incorporates text from this source, which is in the public domain.

[82] "NANU 2015-093". Retrieved 10 December 2015. This article incorporates text from this source, which is in the public domain.

[83] "NANU 2016-011". Retrieved 9 March 2016. This article incorporates text from this source, which is in the public domain.

[sfn-20181223-84] Clark, Stephen (23 December 2018). "SpaceX closes out year with successful GPS satellite launch". Spaceflight Now. Retrieved 24 December 2018.

[85] "NANU 2020-004". Retrieved 13 January 2020. This article incorporates text from this source, which is in the public domain.

[86] "NANU 2020-015". Retrieved 2 April 2020. This article incorporates text from this source, which is in the public domain.

[87] ttps://www.losangeles.af.mil/News/Article-Display/Article/2082387/gps-iii-space-vehicle-03-safely-arrives-in-florida/

[spaceflightnow_launch_schedule-88] Clark, Stephen (2 June 2020). "Launch Schedule". Spaceflight Now. Retrieved 2 June 2020.

[gleckel-2017-11-89] Gleckel, Gerry (15 November 2017). "GPS Status & Modernization Progress" (PDF). gps.gov. Retrieved 1 December 2017. This article incorporates text from this source, which is in the public domain.

[insidegnss_20170928-90] Divis, Dee Ann (28 September 2017). "GNSS Program Update: Dozens of NavSats Set to Launch in Next 40 Months". InsideGNSS.com. Gibbons Media & Research LLC. Archived from the original on 4 October 2017. Retrieved 4 October 2017.

[gps_34_manufacturing-91] "U.S. Air Force Awards Lockheed Martin Contract for Third and Fourth GPS III Satellites". Lockheed Martin. 12 January 2012. Retrieved 3 January 2017.

[gps_advisory_board_2018_20181205-92] Whitney, Steve (5 December 2018). "GPS Enterprise Status and Modernization" (PDF). U.S. Air Force Space and Missile Systems Center Public Affairs Office. Retrieved 22 December 2018. This article incorporates text from this source, which is in the public domain.

[eelv_phase_1a_rfp-93] "EELV Phase 1A Request for Proposal (RFP) 1A-4". FedBizOpps.gov. Department of the Air Force. 29 June 2017. Retrieved 6 July 2017. This article incorporates text from this source, which is in the public domain.

[airforce_20170629-94] "Final RFP Released for Launch Services Contract". U.S. Air Force Space and Missile Systems Center Public Affairs Office. 29 June 2017. Retrieved 2 December 2017. This article incorporates text from this source, which is in the public domain.

[95] "Contracts for March 14, 2018". U.S. DEPARTMENT OF DEFENSE. Retrieved 15 March 2018. This article incorporates text from this source, which is in the public domain.

[96] Clark, Stephen (30 January 2020). "SpaceX launches its first mission for the U.S. Space Force". Spaceflight Now. Retrieved 1 July 2020.

[gps_iii_4-5-6_award-97] "Air Force Awards Launch Services Contracts to SpaceX and ULA". LosAngeles.af.mil. US Air Force Space and Missile Command Public Affairs. 14 March 2018. Retrieved 16 March 2018. This article incorporates text from this source, which is in the public domain.

[GPS_III_5678-98] "Air Force Awards Lockheed Martin Contracts for Next Set of GPS III Satellites". GPS World. 26 February 2013. Retrieved 2 December 2017.

[spacex_florida_launch_sites-99] Foust, Jeff (8 December 2017). "New and improved Florida pad ready to resume Falcon 9 launches". SpaceNews. Retrieved 18 December 2017.

[gps_status_20180926-100] "GPS Status and Modernization Progress: Service, Satellites, Control Segment, and Military GPS User Equipment" (PDF). US Air Force Space and Missile Systems Center. 26 September 2018. Retrieved 10 November 2018. This article incorporates text from this source, which is in the public domain.

[101] "GPS III SV-08 Core Mate Complete, Space Vehicle Named for NASA Trailblazer". Space and Missile Systems Center. Los Angeles Air Force Base. 10 June 2020. Retrieved 12 June 2020. This article incorporates text from this source, which is in the public domain.

[usaf_gps_iii_9-10-102] "SMC exercises contract options to procure two additional GPS III satellites" (Press release) United States Air Force. 2016-09-21 This article incorporates text from this source, which is in the public domain.