| Designation | Name | Discovered | Last T | Next T | Period |
| 251P | LINEAR | 2004 | 2010 | 2017 | 6.52 |
| 252P | LINEAR | 2000 | 2010 | 2016 | 5.34 |
| 253P | PANSTARRS | ???? | 2011 | 2018 | 6.47 |
| 254P | McNaught | ???? | 2010 | 2020 | 10.14 |
| 255P | Levy | 2006 | 2012 | 2017 | 5.29 |
| 256P | LINEAR | ???? | ???? | ???? | ???? |
| 257P | Catalina | ???? | ???? | ???? | ???? |
| 258P | PANSTARRS | 2012 | 2011 | ???? | 9.23 |
| 259P | Garradd | ???? | ???? | ???? | ???? |
| 260P | McNaught | 2005 | ???? | ???? | ???? |
| 261P | Larson | 2005 | ???? | ???? | ???? |
| 262P | McNaught-Russell | 1994 | ???? | ???? | ???? |
| 263P | Gibbs | 2006 | ???? | ???? | ???? |
| 264P | Larsen | 2004 | 2011 | 2019 | 7.71 |
| 265P | LINEAR | 2003 | 2012 | 2021 | 8.75 |
| 266P | Christensen | 2006 | 2007 | 2013 | 6.64 |
| 267P | LONEOS | 2006 | 2012 | 2018 | 5.96 |
| 268P | Bernardi | 2005 | 2005 | 2015 | 9.76 |
| 269P | Jedicke | 1996 | 1995 | 2014 | 19.83 |
| 270P | Gehrels | 1997 | 2013 | 2030 | 17.97 |
| 271P | van Houten-Lemmon | 1960 | 1961 | 2013 | 18.45 |
| 272P | NEAT | 2004 | 2013 | 2022 | 9.36 |
| 273P | Pons-Gambart | 1827 | 2012 | 2191 | 188.09 |
| 274P | Tombaugh-Tenagra | 1931 | 2013 | 2022 | 9.11 |
| 275P | Hermann | ???? | 2012 | 2026 | 13.79 |
| 276P | Vorobjov | ???? | 2013 | 2024 | 12.54 |
| 277P | LINEAR | ???? | 2005 | 2020 | 7.59 |
| 278P | McNaught | ???? | 2013 | 2020 | 7.12 |
| 279P | La Sagra | ???? | 2009 | 2016 | 6.76 |
| 280P | Larsen | ???? | 2013 | 2023 | 9.63 |
| 281P | MOSS | ???? | 2012 | 2023 | 10.69 |
| 282P | [323137] | ???? | 2013 | 2021 | 8.76 |
| 283P | SPACEWATCH | ???? | 2013 | 2021 | 8.40 |
| 284P | McNaught | ???? | 2014 | 2021 | 7.04 |
| 285P | LINEAR | ???? | 2013 | 2023 | 9.52 |
| 286P | Christensen | ???? | 2014 | 2022 | 8.37 |
| 287P | Christensen | ???? | 2014 | 2023 | 8.54 |
| 288P | [300163] | ???? | ???? | ???? | ???? |
| 289P | Blanpain | 1819 | 2014 | 2019 | 5.32 |
| 290P | Jager | ???? | 2014 | 2029 | 15.20 |
| 291P | NEAT | ???? | 2013 | 2023 | 9.71 |
| 292P | Li | ???? | 2014 | 2029 | 15.14 |
| 293P | SPACEWATCH | ???? | 2014 | 2020 | 6.94 |
| 294P | LINEAR | ???? | 2014 | 2019 | 5.74 |
| 295P | LINEAR | ???? | 2014 | 2026 | 12.34 |
| 296P | Garradd | ???? | 2014 | 2020 | 6.55 |
| 297P | Beshore | ???? | 2014 | 2021 | 6.39 |
| 298P | Christensen | ???? | 2013 | 2020 | 6.80 |
| 299P | Catalina-PANSTARRS | ???? | 2006 | 2015 | 9.15 |
| 300P | Catalina | ???? | 2014 | 2018 | 4.42 |
|