| 21583 Caropietsch | September 26, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 21584 Polepeddi | September 26, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 21585 Polmear | September 26, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 21587 Christopynn | September 26, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 14172 Amanolivere | November 10, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 15031 Lemus | November 10, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 15032 Alexlevin | November 10, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 15434 Mittal | November 10, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 29643 Plücker | November 15, 1998 | Paul G. Comba | asteroid |
| 13380 Yamamohammed | November 21, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16973 Gaspari | November 23, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| Gliese 86 b | November 24, 1998 | Michel Mayor | exoplanet |
| 15452 Ibramohammed | December 14, 1998 | Lincoln Near-Earth Asteroid Research | asteroid |
| 28196 Szeged | December 15, 1998 | Krisztián Sárneczky | asteroid |
| Emoji | 1999 | Shigetaka Kurita | notation |
| 15476 Narendra | January 18, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 15083 Tianhuili | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 15088 Licitra | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16013 Schmidgall | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16014 Sinha | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16015 Snell | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16023 Alisonyee | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16996 Dahir | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16998 Estelleweber | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| Kampung Gual Mesa | February 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16017 Street | February 12, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16019 Edwardsu | February 12, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16021 Caseyvaughn | February 12, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17004 Sinkevich | February 12, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 11203 Danielbetten | March 19, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17039 Yeuseyenka | March 19, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17040 Almeida | March 19, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17044 Mubdirahman | March 19, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17046 Kenway | March 19, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17049 Miron | March 19, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 28346 Kent | March 19, 1999 | Charles W. Juels | asteroid |
| 11207 Black | March 20, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 137165 Annis | March 20, 1999 | Sloan Digital Sky Survey | asteroid |
| 17051 Oflynn | March 20, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16043 Yichenzhang | April 6, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17930 Kennethott | April 6, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17932 Viswanathan | April 6, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17072 Athiviraham | April 7, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 21608 Gloyna | April 7, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17933 Haraguchi | April 12, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17935 Vinhoward | April 12, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17066 Ginagallant | April 15, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17926 Jameswu | April 15, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17928 Neuwirth | April 15, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17079 Lavrovsky | April 17, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 11227 Ksenborisova | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 11228 Botnick | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 11229 Brookebowers | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 11414 Allanchu | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 12117 Meagmessina | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 16053 Brennan | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17090 Mundaca | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17095 Mahadik | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17098 Ikedamai | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |
| 17100 Kamiokanatsu | May 10, 1999 | Lincoln Near-Earth Asteroid Research | asteroid |