Asteroids discovered on October 20
115 named asteroids.
| # | Asteroid | Discovered | Discoverer |
|---|---|---|---|
| 1 | (518) Halawe | 1903-10-20 | R. S. Dugan |
| 2 | (519) Sylvania | 1903-10-20 | R. S. Dugan |
| 3 | (577) Rhea | 1905-10-20 | M. F. Wolf |
| 4 | (924) Toni | 1919-10-20 | K. Reinmuth |
| 5 | (943) Begonia | 1920-10-20 | K. Reinmuth |
| 6 | (2819) Ensor | 1933-10-20 | E. Delporte |
| 7 | (1501) Baade | 1938-10-20 | A. Wachmann |
| 8 | (1710) Gothard | 1941-10-20 | G. Kulin |
| 9 | (1838) Ursa | 1971-10-20 | P. Wild |
| 10 | (1839) Ragazza | 1971-10-20 | P. Wild |
| 11 | (1893) Jakoba | 1971-10-20 | P. Wild |
| 12 | (3437) Kapitsa | 1982-10-20 | L. G. Karachkina |
| 13 | (4475) Voitkevich | 1982-10-20 | L. G. Karachkina |
| 14 | (4625) Shchedrin | 1982-10-20 | L. G. Karachkina |
| 15 | (5094) Seryozha | 1982-10-20 | L. G. Karachkina |
| 16 | (5247) Krylov | 1982-10-20 | L. G. Karachkina |
| 17 | (5717) Damir | 1982-10-20 | L. G. Karachkina |
| 18 | (5941) Valencia | 1982-10-20 | L. G. Karachkina |
| 19 | (6766) Kharms | 1982-10-20 | L. G. Karachkina |
| 20 | (7632) Stanislav | 1982-10-20 | L. G. Karachkina |
| 21 | (8142) Zolotov | 1982-10-20 | L. G. Karachkina |
| 22 | (8811) Waltherschmadel | 1982-10-20 | L. G. Karachkina |
| 23 | (8812) Kravtsov | 1982-10-20 | L. G. Karachkina |
| 24 | (9005) Sidorova | 1982-10-20 | L. G. Karachkina |
| 25 | (10712) Malashchuk | 1982-10-20 | L. G. Karachkina |
| 26 | (12220) Semenchur | 1982-10-20 | L. G. Karachkina |
| 27 | (13489) Dmitrienko | 1982-10-20 | L. G. Karachkina |
| 28 | (19952) Ashkinazi | 1982-10-20 | L. G. Karachkina |
| 29 | (24639) Mukhametdinov | 1982-10-20 | L. G. Karachkina |
| 30 | (43752) Maryosipova | 1982-10-20 | L. G. Karachkina |
| 31 | (65658) Gurnikovskaya | 1982-10-20 | L. G. Karachkina |
| 32 | (4250) Perun | 1984-10-20 | Z. Vavrova |
| 33 | (3395) Jitka | 1985-10-20 | A. Mrkos |
| 34 | (3949) Mach | 1985-10-20 | A. Mrkos |
| 35 | (4339) Almamater | 1985-10-20 | A. Mrkos |
| 36 | (7232) Nabokov | 1985-10-20 | A. Mrkos |
| 37 | (7742) Altamira | 1985-10-20 | A. Mrkos |
| 38 | (9551) Kazi | 1985-10-20 | A. Mrkos |
| 39 | (9934) Caccioppoli | 1985-10-20 | E. Bowell |
| 40 | (14348) Cumming | 1985-10-20 | C.-I. Lagerkvist |
| 41 | (17402) Valeryshuvalov | 1985-10-20 | E. Bowell |
| 42 | (4789) Sprattia | 1987-10-20 | D. D. Balam |
| 43 | (6854) Georgewest | 1987-10-20 | K. W. Zeigler |
| 44 | (4903) Ichikawa | 1989-10-20 | Mizuno, Y., Furuta, T. |
| 45 | (5908) Aichi | 1989-10-20 | Mizuno, Y., Furuta, T. |
| 46 | (5007) Keay | 1990-10-20 | R. H. McNaught |
| 47 | (5136) Baggaley | 1990-10-20 | R. H. McNaught |
| 48 | (5623) Iwamori | 1990-10-20 | A. Sugie |
| 49 | (6269) Kawasaki | 1990-10-20 | T. Urata |
| 50 | (17461) Shigosenger | 1990-10-20 | T. Seki |
| 51 | (27740) Obatomoyuki | 1990-10-20 | T. Seki |
| 52 | (20037) Duke | 1992-10-20 | Shoemaker, C. S., Shoemaker, E. M. |
| 53 | (9633) Cotur | 1993-10-20 | E. W. Elst |
| 54 | (10830) Desforges | 1993-10-20 | E. W. Elst |
| 55 | (13118) La Harpe | 1993-10-20 | E. W. Elst |
| 56 | (24794) Kurland | 1993-10-20 | E. W. Elst |
| 57 | (6747) Ozegahara | 1995-10-20 | T. Kobayashi |
| 58 | (6748) Bratton | 1995-10-20 | Spacewatch |
| 59 | (7673) Inohara | 1995-10-20 | T. Kobayashi |
| 60 | (9212) Kanamaru | 1995-10-20 | T. Kobayashi |
| 61 | (11981) Boncompagni | 1995-10-20 | Osservatorio San Vittore |
| 62 | (11984) Manet | 1995-10-20 | E. W. Elst |
| 63 | (15846) Billfyfe | 1995-10-20 | Spacewatch |
| 64 | (16715) Trettenero | 1995-10-20 | Osservatorio San Vittore |
| 65 | (17612) Whiteknight | 1995-10-20 | Sato, N., Urata, T. |
| 66 | (18469) Hakodate | 1995-10-20 | Sato, N., Urata, T. |
| 67 | (48643) Allen-Beach | 1995-10-20 | Sicoli, P., Manca, F. |
| 68 | (52480) Enzomora | 1995-10-20 | Osservatorio San Vittore |
| 69 | (65784) Naderayama | 1995-10-20 | T. Okuni |
| 70 | (7366) Agata | 1996-10-20 | T. Kobayashi |
| 71 | (8571) Taniguchi | 1996-10-20 | T. Kobayashi |
| 72 | (11127) Hagi | 1996-10-20 | K. Cross |
| 73 | (11625) Francelinda | 1996-10-20 | Tesi, L., Cattani, G. |
| 74 | (10220) Pigott | 1997-10-20 | R. A. Tucker |
| 75 | (33044) Erikdavy | 1997-10-20 | P. G. Comba |
| 76 | (13777) Cielobuio | 1998-10-20 | Cavagna, M., Testa, A. |
| 77 | (23944) Dusser | 1998-10-20 | ODAS |
| 78 | (25237) Hurwitz | 1998-10-20 | P. G. Comba |
| 79 | (27086) Italicobrass | 1998-10-20 | Farra d'Isonzo |
| 80 | (40233) Baradeau | 1998-10-20 | ODAS |
| 81 | (47002) Harlingten | 1998-10-20 | ODAS |
| 82 | (49265) Raphaeljimenez | 1998-10-20 | ODAS |
| 83 | (79766) Aurorestephant | 1998-10-20 | ODAS |
| 84 | (21887) Dipippo | 1999-10-20 | LONEOS |
| 85 | (40994) Tekaridake | 1999-10-20 | M. Akiyama |
| 86 | (140628) Klaipeda | 2001-10-20 | Cernis, K., Zdanavicius, J. |
| 87 | (148780) Altjira | 2001-10-20 | Deep Ecliptic Survey |
| 88 | (247341) Shaulladany | 2001-10-20 | NEAT |
| 89 | (115561) Frankherbert | 2003-10-20 | Dillon, W. G., Wells, D. |
| 90 | (181562) Paulrosendall | 2006-10-20 | M. W. Buie |
| 91 | (185312) Yvonnemarschall | 2006-10-20 | M. W. Buie |
| 92 | (187531) Omorichugakkou | 2006-10-20 | Japan Aerospace Exploration Agency |
| 93 | (221566) Omarcustodio | 2006-10-20 | M. W. Buie |
| 94 | (227767) Enkibilal | 2006-10-20 | J.-C. Merlin |
| 95 | (262419) Suzaka | 2006-10-20 | Japan Aerospace Exploration Agency |
| 96 | (328305) Jackmcdevitt | 2006-10-20 | Deep Ecliptic Survey |
| 97 | (329069) Russellporter | 2006-10-20 | Deep Ecliptic Survey |
| 98 | (343774) Samuelhale | 2006-10-20 | Deep Ecliptic Survey |
| 99 | (388370) Paulblu | 2006-10-20 | J.-C. Merlin |
| 100 | (333052) Skeen | 2007-10-20 | Mt. Lemmon Survey |
| 101 | (333079) Keara | 2007-10-20 | Mt. Lemmon Survey |
| 102 | (239593) Tianwenbang | 2008-10-20 | Hsiao and Ye, H.-Y., Ye, Q. |
| 103 | (278986) Chenshuchu | 2008-10-20 | Hsiao, X. Y., Ye, Q.-z. |
| 104 | (528489) Ntuef | 2008-10-20 | Q.-z. Ye X. Y. Hsiao |
| 105 | (243491) Muhlviertel | 2009-10-20 | D. Voglsam |
| 106 | (589360) Yulialinde | 2009-10-20 | Kryachko, T., Satovski, B. |
| 107 | (487617) Ingethiering | 2012-10-20 | Pan-STARRS 1 |
| 108 | (515812) Pueo | 2012-10-20 | Pan-STARRS 1 |
| 109 | (550942) Kurtag | 2012-10-20 | A. Király K. Sárneczky |
| 110 | (551082) Tsiongtiong | 2012-10-20 | Pan-STARRS 1 |
| 111 | (554648) Olaffischer | 2012-10-20 | Pan-STARRS 1 |
| 112 | (560522) Gombaszogi | 2012-10-20 | A. Király K. Sárneczky |
| 113 | (576793) Karolyiamy | 2012-10-20 | A. Király K. Sárneczky |
| 114 | (591808) Dienesvaleria | 2012-10-20 | A. Király K. Sárneczky |
| 115 | (544309) Reuss | 2014-10-20 | K. Sárneczky S. Kürti |