NEO Close Approaches Tables — The Asteroid News


Artist's concept of a near-Earth object. Image: Courtesy NASA/JPL-Caltech

Artist's concept of a near-Earth object. Image: Courtesy NASA/JPL-Caltech


100 Closest NEO Approaches By Year 1900 to 2199
1900 1901 1902 1903 1904 1905 1906 1907 1908 1909
1910 1911 1912 1913 1914 1915 1916 1917 1918 1919
1920 1921 1922 1923 1924 1925 1926 1927 1928 1929
1930 1931 1932 1933 1934 1935 1936 1937 1938 1939
1940 1941 1942 1943 1944 1945 1946 1947 1948 1949
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959
1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
1980 1981 1992 1983 1984 1985 1986 1987 1988 1989
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
2020 2021 2022 2023 2024 2025 2026 2027 2028 2029
2030 2031 2032 2033 2034 2035 2036 2037 2038 2039
2040 2041 2042 2043 2044 2045 2046 2047 2048 2049
2050 2051 2052 2053 2054 2055 2056 2057 2058 2059
2060 2061 2062 2063 2064 2065 2066 2067 2068 2069
2070 2071 2072 2073 2074 2075 2076 2077 2078 2079
2080 2081 2082 2083 2084 2085 2086 2087 2088 2089
2090 2091 2092 2093 2094 2095 2096 2097 2098 2099
2100 2101 2102 2103 2104 2105 2106 2107 2108 2109
2110 2111 2112 2113 2114 2115 2116 2117 2118 2119
2120 2121 2122 2123 2124 2125 2126 2127 2128 2129
2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
2140 2141 2142 2143 2144 2145 2146 2147 2148 2149
2150 2151 2152 2153 2154 2155 2156 2157 2158 2159
2160 2161 2162 2163 2164 2165 2166 2167 2168 2169
2170 2171 2172 2173 2174 2175 2176 2177 2178 2179
2180 2181 2182 2183 2184 2185 2186 2187 2188 2189
2190 2191 2192 2193 2194 2195 2196 2197 2198 2199


Asteroids follow predictable orbits governed by well–understood celestial mechanics. The “known” orbit of an asteroid is determined by calculating the ellipse around the Sun that “best” places the object in the sky where it was observed. Astronomers adjust the orbital elements until the asteroid’s postdicted positions “align” with its observed positions. There is no such thing as a perfectly “known” orbit. As additional observations are collected, the orbit is refined, increasing confidence in both postdicting the object’s past positions and predicting its future positions. Postdiction allows precovery searches, in which older astronomical images are examined to detect the object at dates prior to its official discovery.

Near–Earth objects can sometimes pass relatively close to Earth as they orbit the Sun. However, “close” in astronomical terms still often means millions, or even tens of millions, of kilometers. To put these encounters into proper context, our NEO close approach tables list recorded, postdicted, or predicted close approaches of known NEOs. Distances are shown in multiple units: astronomical units (AU), lunar distances (LD), kilometers, and Earth radii to help illustrate the true scale of these flybys. Inclusion in this list does not necessarily imply an impact threat; it reflects orbital geometry and well–understood celestial mechanics.


The raw data for the tables is from the The JPL Center for NEO Studies (CNEOS) and was pulled from the API .