Asteroids discovered on February 21
53 named asteroids.
| # | Asteroid | Discovered | Discoverer |
|---|---|---|---|
| 1 | (586) Thekla | 1906-02-21 | M. F. Wolf |
| 2 | (596) Scheila | 1906-02-21 | A. Kopff |
| 3 | (818) Kapteynia | 1916-02-21 | M. F. Wolf |
| 4 | (1378) Leonce | 1936-02-21 | F. Rigaux |
| 5 | (3406) Omsk | 1969-02-21 | B. A. Burnasheva |
| 6 | (3508) Pasternak | 1980-02-21 | L. G. Karachkina |
| 7 | (4017) Disneya | 1980-02-21 | L. G. Karachkina |
| 8 | (4318) Bata | 1980-02-21 | Z. Vavrova |
| 9 | (7272) Darbydyar | 1980-02-21 | Z. Vavrova |
| 10 | (11796) Nirenberg | 1980-02-21 | L. G. Karachkina |
| 11 | (2634) James Bradley | 1982-02-21 | E. Bowell |
| 12 | (2635) Huggins | 1982-02-21 | E. Bowell |
| 13 | (2939) Coconino | 1982-02-21 | E. Bowell |
| 14 | (4027) Mitton | 1982-02-21 | E. Bowell |
| 15 | (5224) Abbe | 1982-02-21 | F. Borngen |
| 16 | (9833) Rilke | 1982-02-21 | F. Borngen |
| 17 | (6583) Destinn | 1984-02-21 | A. Mrkos |
| 18 | (7639) Offutt | 1985-02-21 | Oak Ridge Observatory |
| 19 | (4036) Whitehouse | 1987-02-21 | H. Debehogne |
| 20 | (4210) Isobelthompson | 1987-02-21 | H. Debehogne |
| 21 | (4668) Rayjay | 1987-02-21 | H. Debehogne |
| 22 | (3822) Segovia | 1988-02-21 | T. Seki |
| 23 | (6381) Toyama | 1988-02-21 | Fujii, T., Watanabe, K. |
| 24 | (6725) Engyoji | 1991-02-21 | Inoda, S., Urata, T. |
| 25 | (6786) Doudantsutsuji | 1991-02-21 | Inoda, S., Urata, T. |
| 26 | (9590) Hyria | 1991-02-21 | Spacewatch |
| 27 | (6568) Serendip | 1993-02-21 | Ueda, S., Kaneda, H. |
| 28 | (7263) Takayamada | 1995-02-21 | T. Kobayashi |
| 29 | (10169) Ogasawara | 1995-02-21 | T. Kobayashi |
| 30 | (11321) Tosimatumoto | 1995-02-21 | T. Seki |
| 31 | (14939) Norikura | 1995-02-21 | A. Nakamura |
| 32 | (16701) Volpe | 1995-02-21 | Spacewatch |
| 33 | (145732) Kanmon | 1995-02-21 | A. Nakamura |
| 34 | (27003) Katoizumi | 1998-02-21 | A. Nakamura |
| 35 | (29561) Iatteri | 1998-02-21 | Stroncone |
| 36 | (31238) Kromeriz | 1998-02-21 | Ticha, J., Tichy, M. |
| 37 | (31239) Michaeljames | 1998-02-21 | I. P. Griffin |
| 38 | (25930) Spielberg | 2001-02-21 | W. K. Y. Yeung |
| 39 | (46053) Davidpatterson | 2001-02-21 | D. Healy |
| 40 | (153284) Frieman | 2001-02-21 | Sloan Digital Sky Survey |
| 41 | (329025) Annekathrin | 2001-02-21 | Spacewatch |
| 42 | (207420) Jehin | 2006-02-21 | LONEOS |
| 43 | (242830) Richardwessling | 2006-02-21 | R. Holmes |
| 44 | (333190) Matthewjones | 2006-02-21 | CSS |
| 45 | (221698) Juliusolsen | 2007-02-21 | R. Holmes |
| 46 | (315088) Daniels | 2007-02-21 | R. Holmes |
| 47 | (349862) Modigliani | 2009-02-21 | V. S. Casulli |
| 48 | (435950) Bad Konigshofen | 2009-02-21 | F. Hormuth |
| 49 | (600639) Gevreychambertin | 2012-02-21 | M. Ory |
| 50 | (600665) Nuitsaintgeorges | 2012-02-21 | M. Ory |
| 51 | (660798) Karltreusch | 2012-02-21 | R. P. Boyle K. Äernis |
| 52 | (763533) Alabiano | 2012-02-21 | R. P. Boyle K. Äernis |
| 53 | (669952) Kootker | 2013-02-21 | K. Sárneczky M. Langbroek |