Kosmos 1903

Kosmos 1903
Spacecraft properties

Mission type	Early warning
COSPAR ID	1987-105A
SATCAT №	18701
Mission duration	4 years ^[1]

Spacecraft type	US-K ^[2]
Launch mass	1,900 kilograms (4,200 lb)^[3]

Start of mission
Launch date	21 December 1987, 22:35 (1987-12-21UTC22:35Z) UTC
Rocket	Molniya-M/2BL^[2]
Launch site	Plesetsk Cosmodrome^[2]^[3]

Orbital parameters
Reference system	Geocentric
Regime	Molniya ^[2]
Perigee	605 kilometres (376 mi)^[4]
Apogee	39,746 kilometres (24,697 mi)^[4]
Inclination	63.0 degrees^[4]
Period	717.72 minutes^[4]

Kosmos 1903 (Russian: Космос 1903 meaning Cosmos 1903) is a Soviet US-K missile early warning satellite which was launched in 1987 as part of the Soviet military's Oko programme. The satellite is designed to identify missile launches using optical telescopes and infrared sensors.^[2]

Kosmos 1903 was launched from Site 41/1 at Plesetsk Cosmodrome in the Russian SSR.^[5] A Molniya-M carrier rocket with a 2BL upper stage was used to perform the launch, which took place at 22:35 UTC on 21 December 1987.^[3] The launch successfully placed the satellite into a molniya orbit. It subsequently received its Kosmos designation, and the international designator 1987-105A.^[3] The United States Space Command assigned it the Satellite Catalog Number 18701.^[3]

References

↑ Podvig, Pavel (2002). "History and the Current Status of the Russian Early-Warning System" (pdf). Science and Global Security. 10: 21–60. doi:10.1080/08929880212328. ISSN 0892-9882.
1 2 3 4 5 "US-K (73D6)". Gunter's Space Page. 2012-03-08. Retrieved 2012-04-21.
1 2 3 4 5 "Cosmos 1903". National Space Science Data Centre. 2012-04-20. Retrieved 2012-04-25.
1 2 3 4 McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 30 April 2012.
↑ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2 May 2012.

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

← 1986 · Orbital launches in 1987 · 1988 →

Meteor-2 No.17 \| Kosmos 1811 \| Kosmos 1812 \| Kosmos 1813 \| Progress 27 \| Kosmos 1814 \| Kosmos 1815 \| Molniya-3 No.42 \| Kosmos 1816 \| Kosmos 1817 \| Kosmos 1818 \| Ginga \| Soyuz TM-2 \| Kosmos 1819 \| USA-21 \| Kosmos 1820 \| Kosmos 1821 \| Momo 1 \| Kosmos 1822 \| Kosmos 1823 \| Kosmos 1824 \| GOES 7 \| Progress 28 \| Kosmos 1825 \| Kosmos 1826 \| Kosmos 1827 · Kosmos 1828 · Kosmos 1829 · Kosmos 1830 · Kosmos 1831 · Kosmos 1832 \| Kosmos 1833 \| Gran' No.31L \| Palapa B2P \| SROSS-A \| FLTSATCOM-6 \| Kvant-1 \| Kosmos 1834 \| Kosmos 1835 \| Kosmos 1836 \| Progress 29 \| Kosmos 1837 \| Kosmos 1838 · Kosmos 1839 · Kosmos 1840 \| Kosmos 1841 \| Kosmos 1842 \| Kosmos 1843 \| Gorizont No.23L \| Kosmos 1844 \| Kosmos 1845 \| USA-22 · LIPS-3 · USA-23 · USA-24 · USA-25 \| Polyus \| Progress 30 \| Kosmos 1846 \| Kosmos 1847 \| Kosmos 1848 \| Kosmos 1849 \| Kosmos 1850 \| Kosmos 1851 \| Kosmos 1852 · Kosmos 1853 · Kosmos 1854 · Kosmos 1855 · Kosmos 1856 · Kosmos 1857 · Kosmos 1858 · Kosmos 1859 \| Resurs-F1 No.105 \| Kosmos 1860 \| USA-26 \| Kosmos 1861 \| Kosmos 1862 \| Kosmos 1863 \| Kosmos 1864 \| Kosmos 1865 \| Kosmos 1866 \| Kosmos 1867 \| Kosmos 1868 \| Kosmos 1869 \| Soyuz TM-3 \| Kosmos 1870 \| Kosmos 1871 \| Progress 31 \| Fanhui Shi Weixing 10 \| Meteor-2 No.21 \| Kosmos 1872 \| Kiku No.5 \| Kosmos 1873 \| Kosmos 1874 \| Ekran No.29L \| Kosmos 1875 · Kosmos 1876 · Kosmos 1877 · Kosmos 1878 · Kosmos 1879 · Kosmos 1880 \| Fanhui Shi Weixing I-01 \| Kosmos 1881 \| Kosmos 1882 \| Aussat A3 · ECS-4 \| Kosmos 1883 · Kosmos 1884 · Kosmos 1885 \| Transit-O 27 · Transit-O 29 \| Kosmos 1886 \| Progress 32 \| Kosmos 1887 \| Kosmos 1888 \| Kosmos 1889 \| Kosmos 1890 \| Kosmos 1891 \| Kosmos 1892 \| Kosmos 1893 \| USA-27 \| Kosmos 1894 \| Kosmos 1895 \| Kosmos 1896 \| Progress 33 \| TV-SAT 1 \| Kosmos 1897 \| USA-28 \| Kosmos 1898 \| Kosmos 1899 \| Gran' No.32L \| Kosmos 1900 \| Kosmos 1901 \| Kosmos 1902 \| Soyuz TM-4 \| Kosmos 1903 \| Kosmos 1904 \| Kosmos 1905 \| Kosmos 1906 \| Ekran-M No.13L \| Kosmos 1907

Payloads are separated by bullets ( · ), launches by pipes ( \| ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).

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Kosmos 1903

References

See also