Asteroids discovered on April 20
91 named asteroids.
| # | Asteroid | Discovered | Discoverer |
|---|---|---|---|
| 1 | (508) Princetonia | 1903-04-20 | R. S. Dugan |
| 2 | (532) Herculina | 1904-04-20 | M. F. Wolf |
| 3 | (786) Bredichina | 1914-04-20 | F. Kaiser |
| 4 | (787) Moskva | 1914-04-20 | G. N. Neujmin |
| 5 | (1575) Winifred | 1950-04-20 | Indiana University |
| 6 | (2261) Keeler | 1977-04-20 | A. R. Klemola |
| 7 | (8391) Kring | 1993-04-20 | Spacewatch |
| 8 | (15316) Okagakimachi | 1993-04-20 | Endate, K., Watanabe, K. |
| 9 | (16625) Kunitsugu | 1993-04-20 | Endate, K., Watanabe, K. |
| 10 | (16626) Thumper | 1993-04-20 | Spacewatch |
| 11 | (27809) Murakamiyasuhiko | 1993-04-20 | Endate, K., Watanabe, K. |
| 12 | (8406) Iwaokusano | 1995-04-20 | Endate, K., Watanabe, K. |
| 13 | (8552) Hyoichi | 1995-04-20 | A. Nakamura |
| 14 | (8553) Bradsmith | 1995-04-20 | Endate, K., Watanabe, K. |
| 15 | (11099) Sonodamasaki | 1995-04-20 | Endate, K., Watanabe, K. |
| 16 | (11593) Uchikawa | 1995-04-20 | Endate, K., Watanabe, K. |
| 17 | (100309) Misuzukaneko | 1995-04-20 | A. Nakamura |
| 18 | (7099) Feuerbach | 1996-04-20 | E. W. Elst |
| 19 | (7903) Albinoni | 1996-04-20 | E. W. Elst |
| 20 | (10186) Albeniz | 1996-04-20 | E. W. Elst |
| 21 | (11333) Forman | 1996-04-20 | Pravec, P., Sarounova, L. |
| 22 | (11335) Santiago | 1996-04-20 | E. W. Elst |
| 23 | (13647) Rey | 1996-04-20 | E. W. Elst |
| 24 | (15860) Siran | 1996-04-20 | Galad, A., Kalmancok, D. |
| 25 | (31032) Scheidemann | 1996-04-20 | E. W. Elst |
| 26 | (31037) Mydon | 1996-04-20 | E. W. Elst |
| 27 | (9461) Cotingkeh | 1998-04-20 | LINEAR |
| 28 | (9463) Criscione | 1998-04-20 | LINEAR |
| 29 | (11706) Rijeka | 1998-04-20 | Korlevic, K., Dusic, M. |
| 30 | (11710) Nataliehale | 1998-04-20 | LINEAR |
| 31 | (12086) Joshualevine | 1998-04-20 | LINEAR |
| 32 | (12087) Tiffanylin | 1998-04-20 | LINEAR |
| 33 | (12088) Macalintal | 1998-04-20 | LINEAR |
| 34 | (12089) Maichin | 1998-04-20 | LINEAR |
| 35 | (12514) Schommer | 1998-04-20 | Spacewatch |
| 36 | (12516) Karenyoung | 1998-04-20 | LINEAR |
| 37 | (12855) Tewksbury | 1998-04-20 | LINEAR |
| 38 | (16944) Wangler | 1998-04-20 | LINEAR |
| 39 | (17830) Andreajurgens | 1998-04-20 | LINEAR |
| 40 | (17831) Ussery | 1998-04-20 | LINEAR |
| 41 | (17832) Pitman | 1998-04-20 | LINEAR |
| 42 | (17835) Anoelsuri | 1998-04-20 | LINEAR |
| 43 | (18697) Kathanson | 1998-04-20 | LINEAR |
| 44 | (18698) Racharles | 1998-04-20 | LINEAR |
| 45 | (18699) Quigley | 1998-04-20 | LINEAR |
| 46 | (19463) Emilystoll | 1998-04-20 | LINEAR |
| 47 | (19464) Ciarabarr | 1998-04-20 | LINEAR |
| 48 | (19465) Amandarusso | 1998-04-20 | LINEAR |
| 49 | (19466) Darcydiegel | 1998-04-20 | LINEAR |
| 50 | (19467) Amandanagy | 1998-04-20 | LINEAR |
| 51 | (20322) Emilwilawer | 1998-04-20 | LINEAR |
| 52 | (20323) Tomlindstom | 1998-04-20 | LINEAR |
| 53 | (20324) Johnmahoney | 1998-04-20 | LINEAR |
| 54 | (20326) Erard | 1998-04-20 | LINEAR |
| 55 | (20327) Fernandotinaut | 1998-04-20 | LINEAR |
| 56 | (20329) Manfro | 1998-04-20 | LINEAR |
| 57 | (20330) Manwell | 1998-04-20 | LINEAR |
| 58 | (20331) Bijemarks | 1998-04-20 | LINEAR |
| 59 | (21448) Galindo | 1998-04-20 | LINEAR |
| 60 | (21449) Hemmick | 1998-04-20 | LINEAR |
| 61 | (21450) Kissel | 1998-04-20 | LINEAR |
| 62 | (21453) Victorlevine | 1998-04-20 | LINEAR |
| 63 | (21454) Chernoby | 1998-04-20 | LINEAR |
| 64 | (21455) Mcfarland | 1998-04-20 | LINEAR |
| 65 | (21456) Myers | 1998-04-20 | LINEAR |
| 66 | (21485) Ash | 1998-04-20 | LINEAR |
| 67 | (22564) Jeffreyxing | 1998-04-20 | LINEAR |
| 68 | (22566) Irazaitseva | 1998-04-20 | LINEAR |
| 69 | (22567) Zenisek | 1998-04-20 | LINEAR |
| 70 | (22570) Harleyzhang | 1998-04-20 | LINEAR |
| 71 | (22571) Letianzhang | 1998-04-20 | LINEAR |
| 72 | (22572) Yuanzhang | 1998-04-20 | LINEAR |
| 73 | (22573) Johnzhou | 1998-04-20 | LINEAR |
| 74 | (22575) Jayallen | 1998-04-20 | LINEAR |
| 75 | (23722) Gulak | 1998-04-20 | LINEAR |
| 76 | (31319) Vespucci | 1998-04-20 | V. S. Casulli |
| 77 | (33249) Pamelasvenson | 1998-04-20 | LINEAR |
| 78 | (33254) Sundaresakumar | 1998-04-20 | LINEAR |
| 79 | (33255) Kathybush | 1998-04-20 | LINEAR |
| 80 | (33258) Femariebustos | 1998-04-20 | LINEAR |
| 81 | (33261) Ginagarlie | 1998-04-20 | LINEAR |
| 82 | (39991) Iochroma | 1998-04-20 | LINEAR |
| 83 | (199677) Terzani | 2006-04-20 | V. S. Casulli |
| 84 | (331316) Cavedon | 2006-04-20 | V. S. Casulli |
| 85 | (282903) Masada | 2007-04-20 | |
| 86 | (251595) Rudolfbottger | 2009-04-20 | Karge, S., Kling, R. |
| 87 | (257296) Jessicaamy | 2009-04-20 | M. Todd |
| 88 | (263940) Malyshkina | 2009-04-20 | |
| 89 | (301566) Melissajane | 2009-04-20 | N. Falla |
| 90 | (305953) Josiedubey | 2009-04-20 | N. Falla |
| 91 | (528997) Tanakatakenori | 2009-04-20 | T. V. Kryachko |