Navigation satellites

Below are checklists of navigation satellites, launch dates, and images of the satellites. This is a work in progress, and completeness is our goal. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.

Satellite series covered on this page:

(Selected) U.S. Transit-series satellites:

Satellite	Launch Date	Images
		reference	launch covers	other postal items
Transit-1a [failed]	1959-09-17
Transit-1b	1960-04-13	Transit-1b	Transit-1b Transit-1b Transit-1b
Transit-2a	1960-06-22	Transit-2a Transit-2a+SolRad-1		Transit-2a Transit-2+3b+4b+TRAAC
Transit-3a [failed]	1960-11-30
Transit-3b	1961-02-22	Transit-3b Transit-3b+LOFTI-1	Vanguard-1+2+Transit-3b	Transit-2+3b+4b+TRAAC
Transit-4a	1961-06-29	Transit-4a+Injun-1+SolRad-3	Transit-4a+Injun-1+SolRad-3 Transit-4a+Injun-1+SolRad-3 Transit-4a+Injun-1+SolRad-3 Transit-4a+Injun-1+SolRad-3 Transit-4a+Injun-1+SolRad-3 (Injun-1 and SolRad-3/GREB-3 names reversed)	Transit-4a+Injun-1+SolRad-3 Transit-4a+Injun-1+SolRad-3 Transit-2+3b+4b+TRAAC Transit-4 Transit-4 Transit-4
Transit-4b	1961-11-15	Transit-4b Transit-4b+TRAAC	Transit-4b+TRAAC Transit-4b+TRAAC Transit-4b+TRAAC
TRAAC	1961-11-15	Transit-4b+TRAAC		TRAAC Transit-2+3b+4b+TRAAC
Transit-5a-1	1962-12-19	Transit-5a-1	Transit-5a-1	Transit-5a Transit-5a
Transit-5a-2	1963-04-05
Transit-5a-3	1963-06-16
Transit-5b-1	1963-09-28	Transit-5b	Transit-5b-1 Transit-5b-1	Transit-5B
Transit-5b-2	1963-12-05		Transit-5b-2 Transit-5b-2
Transit-5b-3	1964-04-21		Transit-5b-3 Transit-5b-3
Transit-5b-4	1964-10-06
Transit-5b-5	1964-12-13
Transit-5b-6	1965-06-24
Transit-5b-7	1965-08-13
Transit-5c-1	1964-06-04
Transit-5e-1	1963-09-28	Transit-5e
Transit-5e-2	1963-12-05
Transit-5e-3	1964-04-21
Transit-5e-5	1964-12-13
Transit-O	1964-10-06 — 1988-04-26	Transit-O (Oscar)	Transit-O3+SECOR-2
Triad-1 / TIP-1	1972-09-02	TIP-1
Triad-2 / TIP-2	1975-10-11
Triad-3 / TIP-3	1976-09-01		TIP-3
Nova-Transit	1981-05-25 — 1984-10-11	Nova-Transit Nova-Transit
Transit	Unspecified	Transit Yoyo-Transit	Transit

U.S. Army, Navy, NASA, and Air Force (ANNA) satellites:

Satellite	Launch Date	Images
		reference	launch covers	other postal items
ANNA-1 (ANNA-1A)	1962-05-10		ANNA-1 ANNA-1
ANNA-2 (ANNA-1B)	1962-10-31		ANNA-2 ANNA-2 ANNA-2 ANNA-2 ANNA-2	ANNA-2

U.S. SEquential COllation of Range (SECOR) / Electronic and Geodetic Ranging Satellite (EGRS) series:

Satellite	Launch Date	Images
		reference	launch covers	other postal items
SECOR-0 / EGRS-0	1962-01-24	SECOR-0
SECOR-1 / EGRS-1	1964-01-11	SECOR	Injun-2+SolRad-4A+SurCal-1+LOFTI-2+SECOR-1
SECOR-2 / EGRS-2	1965-03-11		Transit-O3+SECOR-2
SECOR-3 / EGRS-3	1965-03-09
SECOR-4 / EGRS-4	1965-04-03		Snapshot+SECOR-4 (SNAP-10A) Snapshot+SECOR-4 (SNAP-10A)
SECOR-5 / EGRS-5	1965-08-10
SECOR-6 / EGRS-6	1966-09-06
SECOR-7 / EGRS-7	1965-08-19
SECOR-8 / EGRS-8	1965-10-15
SECOR-9 / EGRS-9	1967-06-29
SECOR-10 / EGRS-10 [failed]	1968-05-18		Nimbus-B+SECOR-10
SECOR-11 / EGRS-11 [failed]	1968-08-16
SECOR-12 / EGRS-12 [failed]	1968-08-16
SECOR-13 / EGRS-13	1969-04-14		Nimbus-3+SECOR-13 Nimbus-3+SECOR-13

Russian Nadezhda-series satellites:

Satellite	Launch Date	Images
		reference	launch covers	other postal items
Kosmos-1383 / Nadezhda	1982-06-29	Kosmos-1383	Nadezhda	Nadezhda
Kosmos-1447 / Nadezhda	1983-03-24
Kosmos-1574 / Nadezhda	1984-06-21
Nadezhda-1	1989-07-04	Nadezhda
Nadezhda-2	1990-02-27
Nadezhda-3	1991-03-12
Nadezhda-4	1994-07-14
Nadezhda-5	1998-12-10
Nadezhda-6	2000-06-28
Nadezhda-7	2002-09-26

Other (selected) navigation satellites:

Satellite	Country	Launch Date	Images
			reference	launch covers	other postal items
Topo-1 (Topo-A)	USA	1970-04-08		Nimbus-4+Topo-1 Nimbus-4+Topo-1 Nimbus-4+Topo-1 Nimbus-4+Topo-1
NTS-2	USA	1977-06-23	NTS-2	NTS-2
GFZ-1	Germany	1995-04-18	GFZ-1		GFZ-1 GFZ-1
GPS / Navstar (unspecified)	USA	1978-02-22 —>	GPS/Navstar	GPS/Navstar	GPS/Navstar
GLONASS / Kosmos-2418	Russia	2004-12-25	GLONASS
GLONASS / Kosmos-2419
GIOVE-A / GSTB-A	ESA	2005-12-28	GIOVE-A
GIOVE-B / GSTB-B	ESA	2008-04-26	GIOVE-B
Galileo (unspecified)	ESA	20?? —>	Galileo

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