List of Oko satellites

Oko is a Russian satellite-based missile detection and early warning system. The system has used a total of 101 satellites, which were launched between 1972 and 2012. Eighty six US-K satellites, operated in semisynchronous elliptical molniya orbits, were launched by Molniya-M carrier rockets with Blok 2BL upper stages, whilst the geostationary part of the system was served by seven US-KS and eight US-KMO satellites, launched using Proton-K carrier rockets with Blok DM and DM-2 upper stages.

Spacecraft	Type^[1]	Launch Date (UTC)^[2]	Carrier rocket^[2]	Launch site^[2]	Placement^[3]	Ceased operations^[3]	Decay Date^[4]	Remarks
Kosmos 520	US-K	19 September 1972 19:19:03	Molniya-M/2BL	Plesetsk 41/1	HEO 4	Unknown	in orbit
Kosmos 606	US-K	2 November 1973 13:01:56	Molniya-M/2BL	Plesetsk 41/1	HEO 4	April 1974	in orbit
Kosmos 665	US-K	29 June 1974 15:59:58	Molniya-M/2BL	Plesetsk 41/1	HEO 2	September 1975	6 July 1990
Kosmos 706	US-K	30 January 1975 15:02	Molniya-M/2BL	Plesetsk 41/1	HEO 7	November 1975	in orbit
Kosmos 775	US-KS^[5]	8 October 1975 00:30:00	Proton-K/DM	Baikonur 81/23	GEO	October 1975	in orbit	Never entered service
Kosmos 862	US-K	22 October 1976 09:12	Molniya-M/2BL	Plesetsk 43/4	HEO 5	March 1977	in orbit
Kosmos 903	US-K	11 April 1977 01:38	Molniya-M/2BL	Plesetsk 43/3	HEO 7	June 1978	in orbit
Kosmos 917	US-K	16 June 1977 01:58	Molniya-M/2BL	Plesetsk 43/4	HEO 9	March 1979	in orbit
Kosmos 931	US-K	20 July 1977 04:44	Molniya-M/2BL	Plesetsk 43/4	HEO 2	October 1977	in orbit	Never entered service
Kosmos 1024	US-K	28 June 1978 02:59	Molniya-M/2BL	Plesetsk 43/3	HEO 2	May 1980	in orbit
Kosmos 1030	US-K	6 September 1978 03:04	Molniya-M/2BL	Plesetsk 43/4	HEO 4	October 1978	17 August 2004	Never entered service
Kosmos 1109	US-K	27 June 1979 18:11	Molniya-M/2BL	Plesetsk 41/1	HEO 9	February 1980	in orbit	Never entered service
Kosmos 1124	US-K	28 August 1979 00:17	Molniya-M/2BL	Plesetsk 43/4	HEO 4	September 1979	in orbit	Never entered service
Kosmos 1164	US-K	12 February 1980 00:53	Molniya-M/2BL	Plesetsk 43/4	HEO 9	12 February 1980	12 February 1980	Launch failure; Blok 2BL failed to ignite, never left low Earth parking orbit^[6]
Kosmos 1172	US-K	12 April 1980 20:18	Molniya-M/2BL	Plesetsk 41/1	HEO 9	April 1982	26 December 1997
Kosmos 1188	US-K	14 June 1980 20:52	Molniya-M/2BL	Plesetsk 43/3	HEO 2	October 1980	in orbit
Kosmos 1191	US-K	2 July 1980 00:54	Molniya-M/2BL	Plesetsk 41/1	HEO 4	May 1981	in orbit
Kosmos 1217	US-K	24 October 1980 10:53	Molniya-M/2BL	Plesetsk 41/1	HEO 2	March 1983	in orbit
Kosmos 1223	US-K	27 November 1980 21:37	Molniya-M/2BL	Plesetsk 41/1	HEO 7	August 1982	in orbit
Kosmos 1247	US-K	19 February 1981 10:00	Molniya-M/2BL	Plesetsk 16/2	HEO 5	October 1981	in orbit
Kosmos 1261	US-K	31 March 1981 09:40	Molniya-M/2BL	Plesetsk 41/1	HEO 6	May 1981	in orbit
Kosmos 1278	US-K	19 June 1981 19:37:04	Molniya-M/2BL	Plesetsk 43/3	HEO 4	July 1984	2 September 2000
Kosmos 1285	US-K	4 August 1981 00:13	Molniya-M/2BL	Plesetsk 16/2	HEO 6	November 1981	in orbit	Never entered service
Kosmos 1317	US-K	31 October 1981 22:54	Molniya-M/2BL	Plesetsk 16/2	HEO 9	January 1984	in orbit
Kosmos 1341	US-K	3 March 1982 05:44:38	Molniya-M/2BL	Plesetsk 16/2	HEO 5	February 1984	in orbit
Kosmos 1348	US-K	7 April 1982 13:42	Molniya-M/2BL	Plesetsk 16/2	HEO 9	July 1984	in orbit
Kosmos 1367	US-K	20 May 1982 13:09	Molniya-M/2BL	Plesetsk 41/1	HEO 1	September 1984	in orbit
Kosmos 1382	US-K	25 June 1982 02:28	Molniya-M/2BL	Plesetsk 43/3	HEO 7	September 1984	in orbit
Kosmos 1409	US-K	22 September 1982 06:23	Molniya-M/2BL	Plesetsk 16/2	HEO 2	January 1987	8 June 2009
Kosmos 1456	US-K	25 April 1983 19:34	Molniya-M/2BL	Plesetsk 16/2	HEO 4	August 1983	11 May 1998
Kosmos 1481	US-K	8 July 1983 19:21	Molniya-M/2BL	Plesetsk 43/3	HEO 6	9 July 1983	in orbit	Never entered service
Kosmos 1518	US-K	28 December 1983 03:48	Molniya-M/2BL	Plesetsk 16/2	HEO 5	June 1984	19 September 1998
Kosmos 1541	US-K	6 March 1984 17:10	Molniya-M/2BL	Plesetsk 16/2	HEO 3	October 1985	in orbit
Kosmos 1546	US-KS^[5]	29 March 1984 05:53	Proton-K/DM	Baikonur 200/40	GEO 1 & 4	November 1986	in orbit
Kosmos 1547	US-K	4 April 1984 01:40:04	Molniya-M/2BL	Plesetsk 16/2	HEO 7	August 1985	in orbit
Kosmos 1569	US-K	6 June 1984 15:34	Molniya-M/2BL	Plesetsk 16/2	HEO 5	January 1986	7 May 2001
Kosmos 1581	US-K	3 July 1984 21:31	Molniya-M/2BL	Plesetsk 43/4	HEO 8	August 1985	in orbit
Kosmos 1586	US-K	2 August 1984 08:38	Molniya-M/2BL	Plesetsk 16/2	HEO 4	April 1985	in orbit
Kosmos 1596	US-K	7 September 1984 19:13	Molniya-M/2BL	Plesetsk 16/2	HEO 9	November 1986	in orbit
Kosmos 1604	US-K	4 October 1984	Molniya-M/2BL	Plesetsk 16/2	HEO 1	September 1985	in orbit
Kosmos 1629	US-KS^[5]	21 February 1985 07:57	Proton-K/DM	Baikonur 200/39	GEO 4, 3 & 1	January 1987	in orbit
Kosmos 1658	US-K	11 June 1985 14:27	Molniya-M/2BL	Plesetsk 41/1	HEO 6	September 1987	12 November 2005
Kosmos 1661	US-K	18 June 1985 00:40:26	Molniya-M/2BL	Plesetsk 16/2	HEO	October 1989	in orbit	Never entered service
Kosmos 1675	US-K	12 August 1985 15:09	Molniya-M/2BL	Plesetsk 16/2	HEO 8	January 1986	in orbit
Kosmos 1684	US-K	24 September 1985 01:18:10	Molniya-M/2BL	Plesetsk 43/4	HEO 4	March 1989	in orbit
Kosmos 1687	US-K	30 September 1985 19:23	Molniya-M/2BL	Plesetsk 16/2	HEO 2	September 1985	in orbit
Kosmos 1698	US-K	22 October 1985 20:24	Molniya-M/2BL	Plesetsk 43/4	HEO 3	August 1986	in orbit
Kosmos 1701	US-K	9 November 1985 08:25	Molniya-M/2BL	Plesetsk 41/1	HEO 8	November 1987	11 May 2001
Kosmos 1729	US-K	1 February 1986 18:11:56	Molniya-M/2BL	Plesetsk 16/2	HEO 5	May 1988	in orbit
Kosmos 1761	US-K	5 July 1986 01:16:47	Molniya-M/2BL	Plesetsk 43/4	HEO 3	October 1988	in orbit
Kosmos 1774	US-K	28 August 1986 08:02:43	Molniya-M/2BL	Plesetsk 16/2	HEO 7	July 1988	2 November 2010
Kosmos 1783	US-K	3 October 1986 13:05:40	Molniya-M/2BL	Plesetsk 41/1	HEO 1	3 October 1986	in orbit	Launch failure during upper stage burn, placed in lower than planned orbit and unusable^[6]
Kosmos 1785	US-K	15 October 1986 09:29:18	Molniya-M/2BL	Plesetsk 41/1	HEO 9	January 1991	28 February 2002
Kosmos 1793	US-K	20 November 1986 12:09:20	Molniya-M/2BL	Plesetsk 16/2	HEO 2	August 1991	15 May 2011
Kosmos 1806	US-K	12 December 1986 18:35:36	Molniya-M/2BL	Plesetsk 43/4	HEO 5	November 1988	in orbit
Kosmos 1849	US-K	4 June 1987 18:50:23	Molniya-M/2BL	Plesetsk 16/2	HEO 1	May 1990	3 February 2003
Kosmos 1851	US-K	12 June 1987 07:40:28	Molniya-M/2BL	Plesetsk 43/4	HEO 6	November 1989	in orbit
Kosmos 1894	US-KS^[5]	28 October 1987 15:15:00	Proton-K/DM-2	Baikonur 200/40	GEO 1	December 1991	in orbit
Kosmos 1903	US-K	21 December 1987 22:35:42	Molniya-M/2BL	Plesetsk 41/1	HEO 8	November 1992	in orbit
Kosmos 1922	US-K	26 February 1988 09:39:12	Molniya-M/2BL	Plesetsk 41/1	HEO 5	July 1990	in orbit
Kosmos 1966	US-K	30 August 1988 14:14:54	Molniya-M/2BL	Plesetsk 16/2	HEO 3	December 1990	10 November 2005
Kosmos 1974	US-K	3 October 1988 22:23:39	Molniya-M/2BL	Plesetsk 41/1	HEO 7	May 1993	in orbit
Kosmos 1977	US-K	25 October 1988 18:02:31	Molniya-M/2BL	Plesetsk 41/1	HEO 6	July 1990	in orbit
Kosmos 2001	US-K	14 February 1989 04:21:11	Molniya-M/2BL	Plesetsk 43/3	HEO 4	March 1993	22 September 2008
Kosmos 2050	US-K	23 November 1989 20:35:44	Molniya-M/2BL	Plesetsk 16/2	HEO 9	October 1993	in orbit
Kosmos 2063	US-K	27 March 1990 16:40:08	Molniya-M/2BL	Plesetsk 43/3	HEO 2	June 1995	in orbit
Kosmos 2076	US-K	28 April 1990 11:37:02	Molniya-M/2BL	Plesetsk 16/2	HEO 1	October 1992	in orbit
Kosmos 2084	US-K	21 June 1990 20:45:52	Molniya-M/2BL	Plesetsk 43/3	HEO 6	21 June 1990	in orbit	Launch failure; Blok 2BL failed to ignite, never left low Earth orbit^[6]
Kosmos 2087	US-K	25 July 1990 18:13:56	Molniya-M/2BL	Plesetsk 16/2	HEO 6	January 1992	in orbit
Kosmos 2097	US-K	28 August 1990 07:49:13	Molniya-M/2BL	Plesetsk 43/4	HEO 3	April 1995	in orbit
Kosmos 2105	US-K	20 November 1990 02:33:14	Molniya-M/2BL	Plesetsk 16/2	HEO 3	April 1993	21 January 2008
Kosmos 2133	US-KMO^[7]	14 February 1991 08:31:56	Proton-K/DM-2	Baikonur 200/39	GEO 4, 3, 2, 1 & 4	November 1995	in orbit
Kosmos 2155	US-KS^[5]	13 September 1991 17:51:02	Proton-K/DM-2	Baikonur 81/23	GEO 1	June 1992	in orbit
Kosmos 2176	US-K	24 January 1992 01:18:01	Molniya-M/2BL	Plesetsk 43/3	HEO 6	April 1996	17 January 2012
Kosmos 2196	US-K	8 July 1992 09:53:14	Molniya-M/2BL	Plesetsk 43/3	HEO 5	June 1994	in orbit
Kosmos 2209	US-KS^[5]	10 September 1992 18:01:18	Proton-K/DM-2	Baikonur 81/23	GEO 1	November 1996	in orbit
Kosmos 2217	US-K	21 October 1992 10:21:22	Molniya-M/2BL	Plesetsk 16/2	HEO 8	November 1996	6 November 2010
Kosmos 2222	US-K	25 November 1992 12:18:54	Molniya-M/2BL	Plesetsk 43/3	HEO 1	December 1996	3 May 2023
Kosmos 2224	US-KMO^[7]	17 December 1992 12:45:00	Proton-K/DM-2	Baikonur 200/39	GEO 2, 1 & 2	June 1999	in orbit
Kosmos 2232	US-K	26 January 1993 15:55:26	Molniya-M/2BL	Plesetsk 16/2	HEO 4	June 1998	in orbit
Kosmos 2241	US-K	6 April 1993 19:07:27	Molniya-M/2BL	Plesetsk 43/4	HEO 7	January 1997	in orbit
Kosmos 2261	US-K	10 August 1993 14:53:45	Molniya-M/2BL	Plesetsk 16/2	HEO 1	March 1998	in orbit
Kosmos 2282	US-KMO^[7]	6 July 1994 23:58:51	Proton-K/DM-2	Baikonur 81/23	HEO 9	December 1995	in orbit
Kosmos 2286	US-K	5 August 1994 01:12:21	Molniya-M/2BL	Plesetsk 16/2	HEO 5	March 1998	in orbit
Kosmos 2312	US-K	24 May 1995 20:10:09	Molniya-M/2BL	Plesetsk 16/2	HEO 2	December 1997	in orbit
Kosmos 2340	US-K	9 April 1997 08:58:44	Molniya-M/2BL	Plesetsk 16/2	HEO 8	May 2001	in orbit
Kosmos 2342	US-K	14 May 1997 00:33:57	Molniya-M/2BL	Plesetsk 43/4	HEO 6	May 2001	in orbit
Kosmos 2345	US-KS^[5]	24 August 1997 20:49:14	Proton-K/DM-2	Baikonur 200/39	GEO 1	February 1999	in orbit
Kosmos 2350	US-KMO^[7]	29 April 1998 04:36:54	Proton-K/DM-2	Baikonur 200/39	GEO 4	June 1998	in orbit
Kosmos 2351	US-K	7 May 1998 08:53:22	Molniya-M/2BL	Plesetsk 16/2	HEO 1	May 2001	in orbit
Kosmos 2368	US-K	27 December 1999 19:12:44	Molniya-M/2BL	Plesetsk 16/2	HEO 3		in orbit
Kosmos 2379	US-KMO^[7]	24 August 2001 20:35	Proton-K/DM-2	Baikonur 81/24	GEO 4, 1 & 2	2009-10	in orbit
Kosmos 2388	US-K	1 April 2002 22:06:45	Molniya-M/2BL	Plesetsk 16/2		November 2006^[8]	14 September 2011
Kosmos 2393	US-K	24 December 2002 12:20:13	Molniya-M/2BL	Plesetsk 16/2		March 2007^[8]	in orbit
Kosmos 2397	US-KMO^[7]	24 April 2003 04:23:17	Proton-K/DM-2	Baikonur 81/24		June 2003^[9]	in orbit
Kosmos 2422	US-K	21 July 2006 04:20:03	Molniya-M/2BL	Plesetsk 16/2		Active	in orbit
Kosmos 2430	US-K	23 October 2007 04:39	Molniya-M/2BL	Plesetsk 16/2		Active	in orbit
Kosmos 2440	US-KMO^[7]	26 June 2008 23:59:43	Proton-K/DM-2	Baikonur 81/24	GEO 4^[10]	February 2010^[10]	in orbit
Kosmos 2446	US-K	2 December 2008 05:00	Molniya-M/2BL	Plesetsk 16/2		Active	in orbit
Kosmos 2469	US-K	30 September 2010 17:01:15	Molniya-M/2BL	Plesetsk 16/2		Active	in orbit	Final flight of Molniya-M^[11]
Kosmos 2479	US-KMO^[7]	30 March 2012 05:49^[12]	Proton-K/DM-2^[12]	Baikonur 81/24^[12]	GEO 4^[13]	Active	in orbit	Final flight of Proton-K

References

^ Krebs, Gunter. "US-K (73D6)". Gunter's Space Page. Retrieved 2 May 2012.
^ ^a ^b ^c McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2 May 2012.
^ ^a ^b Podvig, Pavel (2002). "History and the Current Status of the Russian Early-Warning System" (PDF). Science and Global Security. 10 (1): 21–60. Bibcode:2002S&GS...10...21P. CiteSeerX 10.1.1.692.6127. doi:10.1080/08929880212328. ISSN 0892-9882. S2CID 122901563. Archived from the original (PDF) on 2012-03-15.
^ McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 2 May 2012.
^ ^a ^b ^c ^d ^e ^f ^g Krebs, Gunter. "US-KS (74Kh6)". Gunter's Space Page. Retrieved 2 May 2012.
^ ^a ^b ^c Wade, Mark. "Molniya 8K78M". Encyclopedia Astronautica. Archived from the original on 8 May 2012. Retrieved 2 May 2012.
^ ^a ^b ^c ^d ^e ^f ^g ^h Krebs, Gunter. "US-KMO (71Kh6)". Gunter's Space Page. Retrieved 2 May 2012.
^ ^a ^b Podvig, Pavel (23 October 2007). "Launch of Cosmos-2430 early-warning satellite". Russian Strategic Nuclear Forces. Retrieved 2 May 2012.
^ Podvig, Pavel (28 November 2003). "Problems with Russian military satellites". Russian Strategic Nuclear Forces. Retrieved 2 May 2012.
^ ^a ^b Podvig, Pavel (2 September 2010). "Only two satellites left in Russia's early-warning system". Russian Strategic Nuclear Forces. Retrieved 2 May 2012.
^ Zak, Anatoly. "Molniya rocket". RussianSpaceWeb. Retrieved 2 May 2012.
^ ^a ^b ^c McDowell, Jonathan (12 April 2012). "Issue 656". Jonathan's Space Report. Archived from the original on 6 December 2012. Retrieved 2 May 2012.
^ Podvig, Pavel (30 March 2012). "Cosmos-2479 - new geostationary early warning satellite". Russian Strategic Nuclear Forces. Retrieved 2 May 2012.

[GSP-USK-1] Krebs, Gunter. "US-K (73D6)". Gunter's Space Page. Retrieved 2 May 2012.

[LaunchLog-2] McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2 May 2012.

[Podvig-3] Podvig, Pavel (2002). "History and the Current Status of the Russian Early-Warning System" (PDF). Science and Global Security. 10 (1): 21–60. Bibcode:2002S&GS...10...21P. CiteSeerX 10.1.1.692.6127. doi:10.1080/08929880212328. ISSN 0892-9882. S2CID 122901563. Archived from the original (PDF) on 2012-03-15.

[Satcat-4] McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 2 May 2012.

[GSP-USKS-5] ^ ^a ^b ^c ^d ^e ^f ^g Krebs, Gunter. "US-KS (74Kh6)". Gunter's Space Page. Retrieved 2 May 2012.

[EA-Molniya-6] Wade, Mark. "Molniya 8K78M". Encyclopedia Astronautica. Archived from the original on 8 May 2012. Retrieved 2 May 2012.

[GSP-USKMO-7] ^ ^a ^b ^c ^d ^e ^f ^g ^h Krebs, Gunter. "US-KMO (71Kh6)". Gunter's Space Page. Retrieved 2 May 2012.

[Podvig_2007-8] Podvig, Pavel (23 October 2007). "Launch of Cosmos-2430 early-warning satellite". Russian Strategic Nuclear Forces. Retrieved 2 May 2012.

[Podvig_2003-9] Podvig, Pavel (28 November 2003). "Problems with Russian military satellites". Russian Strategic Nuclear Forces. Retrieved 2 May 2012.

[Podvig_2010-10] Podvig, Pavel (2 September 2010). "Only two satellites left in Russia's early-warning system". Russian Strategic Nuclear Forces. Retrieved 2 May 2012.

[11] Zak, Anatoly. "Molniya rocket". RussianSpaceWeb. Retrieved 2 May 2012.

[JSR656-12] McDowell, Jonathan (12 April 2012). "Issue 656". Jonathan's Space Report. Archived from the original on 6 December 2012. Retrieved 2 May 2012.

[Podvig_2012-13] Podvig, Pavel (30 March 2012). "Cosmos-2479 - new geostationary early warning satellite". Russian Strategic Nuclear Forces. Retrieved 2 May 2012.

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v t e Oko programme
US-K	Kosmos 520 Kosmos 606 Kosmos 665 Kosmos 706 Kosmos 862 Kosmos 903 Kosmos 917 Kosmos 931 Kosmos 1024 Kosmos 1030 Kosmos 1109 Kosmos 1124 Kosmos 1164 Kosmos 1172 Kosmos 1188 Kosmos 1191 Kosmos 1217 Kosmos 1223 Kosmos 1247 Kosmos 1261 Kosmos 1278 Kosmos 1285 Kosmos 1317 Kosmos 1341 Kosmos 1348 Kosmos 1367 Kosmos 1382 Kosmos 1409 Kosmos 1456 Kosmos 1481 Kosmos 1518 Kosmos 1541 Kosmos 1547 Kosmos 1569 Kosmos 1581 Kosmos 1586 Kosmos 1596 Kosmos 1604 Kosmos 1658 Kosmos 1661 Kosmos 1675 Kosmos 1684 Kosmos 1687 Kosmos 1698 Kosmos 1701 Kosmos 1729 Kosmos 1761 Kosmos 1774 Kosmos 1783 Kosmos 1785 Kosmos 1793 Kosmos 1806 Kosmos 1849 Kosmos 1851 Kosmos 1903 Kosmos 1922 Kosmos 1966 Kosmos 1974 Kosmos 1977 Kosmos 2001 Kosmos 2050 Kosmos 2063 Kosmos 2076 Kosmos 2084 Kosmos 2087 Kosmos 2097 Kosmos 2105 Kosmos 2176 Kosmos 2196 Kosmos 2217 Kosmos 2222 Kosmos 2232 Kosmos 2241 Kosmos 2261 Kosmos 2286 Kosmos 2312 Kosmos 2340 Kosmos 2342 Kosmos 2351 Kosmos 2368 Kosmos 2388 Kosmos 2393 Kosmos 2422 Kosmos 2430 Kosmos 2446 Kosmos 2469
US-KS	Kosmos 775 Kosmos 1546 Kosmos 1629 Kosmos 1894 Kosmos 2155 Kosmos 2209 Kosmos 2345
US-KMO	Kosmos 2133 Kosmos 2224 Kosmos 2282 Kosmos 2350 Kosmos 2379 Kosmos 2397 Kosmos 2440 Kosmos 2479
List of satellites