Asteroids discovered on January 31
33 named asteroids.
| # | Asteroid | Discovered | Discoverer |
|---|---|---|---|
| 1 | (232) Russia | 1883-01-31 | J. Palisa |
| 2 | (1015) Christa | 1924-01-31 | K. Reinmuth |
| 3 | (1016) Anitra | 1924-01-31 | K. Reinmuth |
| 4 | (1056) Azalea | 1924-01-31 | K. Reinmuth |
| 5 | (1876) Napolitania | 1970-01-31 | C. T. Kowal |
| 6 | (7324) Carret | 1981-01-31 | Harvard Observatory |
| 7 | (4374) Tadamori | 1987-01-31 | Suzuki, K., Urata, T. |
| 8 | (4225) Hobart | 1989-01-31 | Hioki, T., Kawasato, N. |
| 9 | (5283) Pyrrhus | 1989-01-31 | C. S. Shoemaker |
| 10 | (11575) Claudio | 1994-01-31 | Farra d'Isonzo |
| 11 | (7308) Hattori | 1995-01-31 | Shimizu, Y., Urata, T. |
| 12 | (7668) Mizunotakao | 1995-01-31 | T. Kobayashi |
| 13 | (8047) Akikinoshita | 1995-01-31 | T. Kobayashi |
| 14 | (9981) Kudo | 1995-01-31 | T. Kobayashi |
| 15 | (10167) Yoshiwatiso | 1995-01-31 | T. Seki |
| 16 | (20102) Takasago | 1995-01-31 | T. Seki |
| 17 | (9112) Hatsulars | 1997-01-31 | T. Kobayashi |
| 18 | (9232) Miretti | 1997-01-31 | V. Goretti |
| 19 | (12032) Ivory | 1997-01-31 | P. G. Comba |
| 20 | (12033) Anselmo | 1997-01-31 | Tombelli, M., Munari, U. |
| 21 | (12470) Pinotti | 1997-01-31 | M. Tombelli |
| 22 | (13192) Quine | 1997-01-31 | P. G. Comba |
| 23 | (13652) Elowitz | 1997-01-31 | Spacewatch |
| 24 | (20192) Thomasback | 1997-01-31 | Spacewatch |
| 25 | (21336) Andyblanchard | 1997-01-31 | Spacewatch |
| 26 | (35441) Kyoko | 1998-01-31 | M. Akiyama |
| 27 | (94228) Leesuikwan | 2001-01-31 | W. K. Y. Yeung |
| 28 | (123818) Helenzier | 2001-01-31 | D. Healy |
| 29 | (322577) Stephanhellmich | 2006-01-31 | Mount Lemmon Survey |
| 30 | (483951) Fiorella | 2006-01-31 | V. S. Casulli |
| 31 | (294727) Dennisritchie | 2008-01-31 | Glinos, T., Levy, D. H. |
| 32 | (549107) Hackitamas | 2011-01-31 | K. Sárneczky S. Kürti |
| 33 | (580311) Saselemer | 2011-01-31 | Z. Kuli K. Sárneczky |