Asteroids discovered on May 20
19 named asteroids.
| # | Asteroid | Discovered | Discoverer |
|---|---|---|---|
| 1 | (293) Brasilia | 1890-05-20 | A. Charlois |
| 2 | (510) Mabella | 1903-05-20 | R. S. Dugan |
| 3 | (8842) Bennetmcinnes | 1990-05-20 | R. H. McNaught |
| 4 | (5654) Terni | 1993-05-20 | A. Vagnozzi |
| 5 | (7953) Kawaguchi | 1993-05-20 | S. Otomo |
| 6 | (7144) Dossobuono | 1996-05-20 | L. Lai |
| 7 | (23692) Nandatianwenners | 1997-05-20 | Beijing Schmidt CCD Asteroid Program |
| 8 | (20364) Zdenekmiler | 1998-05-20 | Tichy, M., Moravec, Z. |
| 9 | (18024) Dobson | 1999-05-20 | J. M. Roe |
| 10 | (18814) Ivanovsky | 1999-05-20 | LONEOS |
| 11 | (20452) Kerraouch | 1999-05-20 | LINEAR |
| 12 | (21621) Sherman | 1999-05-20 | LINEAR |
| 13 | (25331) Berrevoets | 1999-05-20 | J. M. Roe |
| 14 | (66391) Moshup | 1999-05-20 | LINEAR |
| 15 | (26757) Bastei | 2001-05-20 | Drebach |
| 16 | (72876) Vauriot | 2001-05-20 | Pises |
| 17 | (355256) Margarethekahn | 2007-05-20 | CSS |
| 18 | (481984) Cernunnos | 2009-05-20 | M. Ory |
| 19 | (847420) Livtel | 2025-05-20 | F. D. Romanov |