# 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 | Launch Date (UTC) | Carrier rocket | Launch site | Placement | Ceased operations | Decay Date | 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 | 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 |
| 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 | 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 | 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 |
| 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 | 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 |
| 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 | 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 | 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 | 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 | 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 | 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 | 24 August 1997 20:49:14 | Proton-K/DM-2 | Baikonur 200/39 | GEO 1 | February 1999 | in orbit | |
| Kosmos 2350 | US-KMO | 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 | 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 | 14 September 2011 | |
| Kosmos 2393 | US-K | 24 December 2002 12:20:13 | Molniya-M/2BL | Plesetsk 16/2 | | March 2007 | in orbit | |
| Kosmos 2397 | US-KMO | 24 April 2003 04:23:17 | Proton-K/DM-2 | Baikonur 81/24 | | June 2003 | 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 | 26 June 2008 23:59:43 | Proton-K/DM-2 | Baikonur 81/24 | GEO 4 | February 2010 | 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 |
| Kosmos 2479 | US-KMO | 30 March 2012 05:49 | Proton-K/DM-2 | Baikonur 81/24 | GEO 4 | Active | in orbit | Final flight of Proton-K |