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ASTEROIDS : more and more?
The table below gives the number of asteroids (not yet confirmed) discovered each year. This number increased not regularly since new telescopes more sensitive made a lot of new discoveries when starting observing. In fact, the number of known asteroids depends only on the size and availability of the telescopes. The automatic LINEAR telescope, although modest in size - 1m - was causing a large number of discoveries because it works continuously. It has reached its limits, and, after a pause, the arrival of new large telescopes (such as the Panoramic Survey Telescope and Rapid Response System Pan-STARRS observing until mag. 24) and the orbiting satellite GAIA (exhaustive observation to magnitude 20!) promise the discovery of almost one million additional asteroids . The table below has been updated on December 10, 2019. The numbers provided here may change after the arriving of observations.
| Year Number |
Year Number | Year Number | Year Number | Year Number | Year Number | Year Number |
|---|---|---|---|---|---|---|
2022 25068 2021 2020 2019 8644 2018 42657 2017 23045 2016 24887 2015 34444 2014 36490 2013 29085 2012 28420 2011 29468 2010 67356 2009 38693 2008 39380 2007 37096 2006 46300 2005 50087 2004 34444 2003 35819 |
2002 45495 2001 50815 2000 48129 1999 28328 1998 15095 1997 4963 1996 3476 1995 3997 1994 2241 1993 2418 1992 1438 1991 1481 1990 1229 1989 882 1988 789 1987 399 1986 404 1985 357 1984 279 1983 242 1982 384 1981 1524 1980 300 1979 418 1978 536 1977 1427 |
1976 196 1975 158 1974 91 1973 1297 1972 85 1971 543 1970 31 1969 61 1968 45 1967 31 1966 29 1965 25 1964 47 1963 13 1962 13 1961 8 1960 1851 1959 7 1958 3 1957 10 1956 6 1955 24 1954 9 1953 44 1952 24 1951 36 |
1950 49 1949 34 1948 25 1947 4 1946 1 1944 1 1943 13 1942 41 1941 41 1940 38 1939 49 1938 99 1937 51 1936 67 1935 75 1934 57 1933 62 1932 50 1931 82 1930 52 1929 55 1928 38 1927 26 1926 22 1925 28 1924 42 1923 28 |
1922 21 1921 29 1920 20 1919 15 1918 24 1917 28 1916 49 1915 21 1914 21 1913 33 1912 14 1911 20 1910 14 1909 21 1908 29 1907 36 1906 45 1905 31 1904 33 1903 21 1902 21 1901 19 1900 12 1899 11 1898 9 1897 7 1896 16 |
1895 11 1894 20 1893 27 1892 27 1891 21 1890 15 1889 6 1888 10 1887 7 1886 11 1885 9 1884 9 1883 4 1882 11 1881 1 1880 8 1879 20 1878 12 1877 10 1876 12 1875 17 1874 6 1873 6 1872 11 1871 5 1870 3 1869 2 |
1868 12 1867 4 1866 6 1865 3 1864 3 1863 2 1862 5 1861 10 1860 5 1859 1 1858 5 1857 9 1856 5 1855 4 1854 6 1853 4 1852 8 1851 2 1850 3 1849 1 1848 1 1847 3 1845 1 1807 1 1804 1 1802 1 1801 1 |