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The 20th century

1,560 inventions and discoveries

Invention or discovery	Date	Inventor or discoverer	Type
29187 Lemonnier	October 16, 1990	Eric Walter Elst	asteroid
7650 Kaname	October 16, 1990	Tsutomu Seki	asteroid
5483 Cherkashin	October 17, 1990	Lyudmila Chernykh	asteroid
5333 Kanaya	October 18, 1990	Toshimasa Furuta	asteroid
10526 Ginkogino	October 19, 1990	Shūji Hayakawa	asteroid
5743 Kato	October 19, 1990	Toshimasa Furuta	asteroid
5136 Baggaley	October 20, 1990	Robert H. McNaught	asteroid
10768 Sarutahiko	October 21, 1990	Takeshi Urata	asteroid
14872 Hoher List	October 23, 1990	Eric Walter Elst	asteroid
5137 Frevert	November 8, 1990	Johann M. Baur	asteroid
10323 Frazer	November 14, 1990	Eric Walter Elst	asteroid
10324 Vladimirov	November 14, 1990	Lyudmila Karachkina	asteroid
7581 Yudovich	November 14, 1990	Lyudmila Karachkina	asteroid
10771 Ouro Prêto	November 15, 1990	Eric Walter Elst	asteroid
24701 Elyu-Ene	November 15, 1990	Eric Walter Elst	asteroid
12279 Laon	November 16, 1990	Eric Walter Elst	asteroid
12281 Chaumont	November 16, 1990	Eric Walter Elst	asteroid
10325 Bexa	November 18, 1990	Eric Walter Elst	asteroid
5649 Donnashirley	November 18, 1990	Eleanor F. Helin	asteroid
(7582) 1990 WL	November 20, 1990	Robert H. McNaught	asteroid
5685 Sanenobufukui	December 8, 1990	Kōyō Kawanishi	asteroid
5262 Brucegoldberg	December 14, 1990	Eleanor F. Helin	asteroid
5686 Chiyonoura	December 20, 1990	Masanori Matsuyama	asteroid
4806 Miho	December 22, 1990	Akira Natori	asteroid
5215 Tsurui	January 9, 1991	Masanori Matsuyama	asteroid
5624 Shirley	January 11, 1991	Eleanor F. Helin	asteroid
4874 Burke	January 12, 1991	Eleanor F. Helin	asteroid
4751 Alicemanning	January 17, 1991	Brian G. W. Manning	asteroid
5242 Kenreimonin	January 18, 1991	Takeshi Urata	asteroid
9040 Flacourtia	January 18, 1991	Eric Walter Elst	asteroid
5293 Bentengahama	January 23, 1991	Masanori Matsuyama	asteroid
5295 Masayo	February 5, 1991	Toshimasa Furuta	asteroid
4774 Hobetsu	February 14, 1991	Hiroshi Kaneda	asteroid
5878 Charlene	February 14, 1991	Eleanor F. Helin	asteroid
10094 Eijikato	February 20, 1991	Tsutomu Seki	asteroid
5785 Fulton	March 17, 1991	Eleanor F. Helin	asteroid
5968 Trauger	March 17, 1991	Eleanor F. Helin	asteroid
5969 Ryuichiro	March 17, 1991	Tsutomu Seki	asteroid
10330 Durkheim	April 8, 1991	Eric Walter Elst	asteroid
11518 Jung	April 8, 1991	Eric Walter Elst	asteroid
11519 Adler	April 8, 1991	Eric Walter Elst	asteroid
11896 Camelbeeck	April 8, 1991	Eric Walter Elst	asteroid
12287 Langres	April 8, 1991	Eric Walter Elst	asteroid
12289 Carnot	April 8, 1991	Eric Walter Elst	asteroid
15273 Ruhmkorff	April 8, 1991	Eric Walter Elst	asteroid
10331 Peterbluhm	April 9, 1991	Freimut Börngen	asteroid
11521 Erikson	April 10, 1991	Eric Walter Elst	asteroid
5750 Kandatai	April 11, 1991	Kazurō Watanabe	asteroid
8668 Satomimura	April 16, 1991	Osamu Muramatsu	asteroid
10332 Défi	May 13, 1991	Carolyn S. Shoemaker	asteroid
4905 Hiromi	May 15, 1991	Kazurō Watanabe	asteroid
12718 Le Gentil	June 6, 1991	Eric Walter Elst	asteroid
5337 Aoki	June 6, 1991	Osamu Muramatsu	asteroid
11289 Frescobaldi	August 2, 1991	Eric Walter Elst	asteroid
11524 Pleyel	August 2, 1991	Eric Walter Elst	asteroid
12294 Avogadro	August 2, 1991	Eric Walter Elst	asteroid
10334 Gibbon	August 3, 1991	Eric Walter Elst	asteroid
13964 La Billardière	August 3, 1991	Eric Walter Elst	asteroid
5446 Heyler	August 5, 1991	Henry E. Holt	asteroid
5595 Roth	August 5, 1991	Henry E. Holt	asteroid