List of unnumbered minor planets: 2001 X–Y

This is a partial list of unnumbered minor planets for principal provisional designations assigned during 1–31 December 2001. , a total of 82 bodies remain unnumbered for this period. Objects for this year are listed on the following pages: A–E · Fi · Fii · G–O · P–R · S · T · U · V–W and X–Y. Also see previous and next year.

X

|- id="2001 XP" bgcolor=#FFC2E0 | 0 || 2001 XP || APO || 21.41 || data-sort-value="0.25" | 250 m || multiple || 2001-2024 || 21 Dec 2024 || 62 || align=left | Disc.: LINEAR || |- id="2001 XQ" bgcolor=#FFC2E0 | 0 || 2001 XQ || APO || 19.2 || data-sort-value="0.51" | 510 m || multiple || 2001–2015 || 22 Dec 2015 || 161 || align=left | Disc.: LINEARPotentially hazardous objectAMO at MPCAlt.: 2008 VV4 || |- id="2001 XG1" bgcolor=#FFC2E0 | 0 || || APO || 23.2 || data-sort-value="0.081" | 81 m || multiple || 2001–2018 || 09 Dec 2018 || 112 || align=left | Disc.: LINEAR || |- id="2001 XM1" bgcolor=#FA8072 | – || || MCA || 18.9 || data-sort-value="0.49" | 490 m || single || 31 days || 16 Dec 2001 || 51 || align=left | Disc.: LINEAR || |- id="2001 XB3" bgcolor=#fefefe | 0 || || MBA-I || 18.37 || data-sort-value="0.86" | 630 m || multiple || 2001-2023 || 29 Jan 2023 || 59 || align=left | Disc.: LINEARAlt.: 2022 UF116 || |- id="2001 XS4" bgcolor=#FA8072 | 0 || || MCA || 18.7 || data-sort-value="0.65" | 530 m || multiple || 2001–2024 || 13 Nov 2024 || 59 || align=left | Disc.: LINEAR || |- id="2001 XU4" bgcolor=#FFC2E0 | 9 || || APO || 23.8 || data-sort-value="0.062" | 62 m || single || 5 days || 14 Dec 2001 || 30 || align=left | Disc.: LINEAR || |- id="2001 XX4" bgcolor=#FFC2E0 | 4 || || APO || 22.1 || data-sort-value="0.14" | 140 m || multiple || 2001–2003 || 03 Jan 2003 || 102 || align=left | Disc.: LINEAR || |- id="2001 XW10" bgcolor=#FFC2E0 | 1 || || APO || 19.4 || data-sort-value="0.47" | 470 m || multiple || 2001–2004 || 31 Dec 2004 || 39 || align=left | Disc.: LINEAR || |- id="2001 XH16" bgcolor=#FFC2E0 | 8 || || APO || 24.8 || data-sort-value="0.039" | 39 m || single || 11 days || 20 Dec 2001 || 12 || align=left | Disc.: Mauna Kea Obs. || |- id="2001 XL16" bgcolor=#FFE699 | 1 || || Asteroid || 20.2 || data-sort-value="0.42" | 420 m || multiple || 2001-2025 || 20 Feb 2025 || 44 || align=left | Disc.: SpacewatchMCA at MPC || |- id="2001 XP31" bgcolor=#FFC2E0 | 1 || || APO || 22.2 || data-sort-value="0.13" | 130 m || multiple || 2001–2018 || 04 Feb 2018 || 38 || align=left | Disc.: LINEARAlt.: 2017 WB15 || |- id="2001 XQ31" bgcolor=#FFC2E0 | 1 || || AMO || 19.74 || data-sort-value="0.51" | 510 m || multiple || 2001-2025 || 11 Dec 2025 || 97 || align=left | Disc.: LINEAR || |- id="2001 XR69" bgcolor=#FA8072 | 0 || || MCA || 17.5 || data-sort-value="0.94" | 940 m || multiple || 2001–2017 || 24 Jun 2017 || 45 || align=left | Disc.: LINEARAlt.: 2005 SZ133 || |- id="2001 XN88" bgcolor=#FA8072 | – || || MCA || 18.6 || data-sort-value="0.57" | 570 m || single || 30 days || 12 Jan 2002 || 29 || align=left | Disc.: LINEAR || |- id="2001 XO88" bgcolor=#FFC2E0 | 7 || || APO || 22.0 || data-sort-value="0.14" | 140 m || single || 26 days || 09 Jan 2002 || 28 || align=left | Disc.: LINEAR || |- id="2001 XX103" bgcolor=#FFC2E0 | 7 || || APO || 23.6 || data-sort-value="0.068" | 68 m || single || 5 days || 20 Dec 2001 || 30 || align=left | Disc.: LINEAR || |- id="2001 XY103" bgcolor=#E9E9E9 | 1 || || MBA-M || 17.38 || 1.4 km || multiple || 2001-2022 || 20 Dec 2022 || 33 || align=left | Disc.: LINEAR || |- id="2001 XG105" bgcolor=#FFC2E0 | 0 || || APO || 21.95 || data-sort-value="0.19" | 190 m || multiple || 2001-2025 || 15 Dec 2025 || 67 || align=left | Disc.: LINEARAMO at MPC || |- id="2001 XK105" bgcolor=#FFC2E0 | 3 || || AMO || 23.8 || data-sort-value="0.062" | 62 m || single || 73 days || 16 Feb 2002 || 27 || align=left | Disc.: LINEAR || |- id="2001 XB114" bgcolor=#d6d6d6 | 1 || || MBA-O || 17.33 || 1.9 km || multiple || 2001–2021 || 05 Jul 2021 || 42 || align=left | Disc.: LINEAR || |- id="2001 XB124" bgcolor=#FA8072 | 1 || || MCA || 18.5 || data-sort-value="0.59" | 590 m || multiple || 1986–2016 || 18 Dec 2016 || 54 || align=left | Disc.: Palomar Obs.Alt.: 1986 VE8 || |- id="2001 XM136" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.71 || data-sort-value="0.54" | 540 m || multiple || 2001–2021 || 31 Jul 2021 || 48 || align=left | Disc.: LINEARAlt.: 2005 VC52 || |- id="2001 XO138" bgcolor=#E9E9E9 | – || || MBA-M || 18.2 || data-sort-value="0.68" | 680 m || single || 5 days || 17 Dec 2001 || 11 || align=left | Disc.: LINEAR || |- id="2001 XF144" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.85 || 1.5 km || multiple || 2001-2023 || 18 Mar 2023 || 56 || align=left | Disc.: LINEAR || |- id="2001 XO144" bgcolor=#d6d6d6 | 0 || || MBA-O || 16.7 || 2.5 km || multiple || 2001–2019 || 04 Jan 2019 || 68 || align=left | Disc.: LINEAR || |- id="2001 XW150" bgcolor=#FFE699 | – || || Asteroid || 17.4 || 1.8 km || single || 8 days || 22 Dec 2001 || 12 || align=left | Disc.: LINEARMBA-O at MPC || |- id="2001 XK160" bgcolor=#fefefe | 0 || || MBA-I || 18.6 || data-sort-value="0.57" | 570 m || multiple || 2001–2020 || 24 Mar 2020 || 47 || align=left | Disc.: LINEARAdded on 22 July 2020 || |- id="2001 XS201" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.8 || 1.2 km || multiple || 2001–2020 || 04 Jan 2020 || 27 || align=left | Disc.: LPL/Spacewatch II || |- id="2001 XW219" bgcolor=#FA8072 | 0 || || MCA || 18.65 || data-sort-value="0.55" | 550 m || multiple || 2001–2022 || 07 Jan 2022 || 196 || align=left | Disc.: LINEARAlt.: 2011 UQ254 || |- id="2001 XF221" bgcolor=#E9E9E9 | – || || MBA-M || 19.1 || data-sort-value="0.64" | 640 m || single || 4 days || 19 Dec 2001 || 12 || align=left | Disc.: LINEAR || |- id="2001 XZ245" bgcolor=#fefefe | 0 || || MBA-I || 17.7 || data-sort-value="0.86" | 860 m || multiple || 2001–2016 || 06 Dec 2016 || 41 || align=left | Disc.: LINEAR || |- id="2001 XG253" bgcolor=#fefefe | 1 || || MBA-I || 17.5 || data-sort-value="0.94" | 940 m || multiple || 2001–2021 || 13 Jun 2021 || 37 || align=left | Disc.: LINEARAdded on 9 March 2021Alt.: 2018 WE6 || |- id="2001 XU254" bgcolor=#C2E0FF | 4 || || TNO || 6.68 || 237 km || multiple || 2001–2020 || 09 Dec 2020 || 30 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano (hot) || |- id="2001 XV254" bgcolor=#C2E0FF | E || || TNO || 7.0 || 137 km || single || 59 days || 06 Feb 2002 || 7 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2001 XW254" bgcolor=#C2E0FF | E || || TNO || 7.7 || 99 km || single || 29 days || 08 Jan 2002 || 4 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2001 XX254" bgcolor=#C2E0FF | 5 || || TNO || 7.32 || 114 km || multiple || 2001–2021 || 11 Jan 2021 || 20 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano (cold) || |- id="2001 XB255" bgcolor=#C2E0FF | E || || TNO || 6.8 || 150 km || single || 36 days || 14 Jan 2002 || 5 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2001 XC255" bgcolor=#C2E0FF | E || || TNO || 7.4 || 114 km || single || 56 days || 03 Feb 2002 || 6 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2001 XE255" bgcolor=#C2E0FF | E || || TNO || 7.9 || 90 km || single || 36 days || 14 Jan 2002 || 4 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2001 XF255" bgcolor=#C2E0FF | E || || TNO || 7.7 || 99 km || single || 36 days || 14 Jan 2002 || 4 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2001 XG255" bgcolor=#C2E0FF | E || || TNO || 8.3 || 75 km || single || 36 days || 14 Jan 2002 || 5 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2001 XJ255" bgcolor=#C2E0FF | E || || TNO || 8.3 || 75 km || single || 34 days || 14 Jan 2002 || 5 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2001 XQ255" bgcolor=#fefefe | 0 || || MBA-I || 18.7 || data-sort-value="0.54" | 540 m || multiple || 2001–2020 || 16 Mar 2020 || 53 || align=left | Disc.: SpacewatchAlt.: 2016 AX89 || |- id="2001 XZ255" bgcolor=#C7FF8F | 3 || || CEN || 11.1 || 34 km || multiple || 2001–2003 || 03 Mar 2003 || 13 || align=left | Disc.: Mauna Kea Obs., BR-mag: 2.04 || |- id="2001 XG258" bgcolor=#FA8072 | 0 || || MCA || 19.14 || data-sort-value="0.62" | 620 m || multiple || 2001–2019 || 30 Jan 2019 || 70 || align=left | Disc.: LONEOS || |- id="2001 XS263" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.9 || 1.5 km || multiple || 2001–2019 || 02 Mar 2019 || 55 || align=left | Disc.: NEAT || |- id="2001 XQ268" bgcolor=#d6d6d6 | 0 || || MBA-O || 16.31 || 3.0 km || multiple || 2001–2021 || 19 May 2021 || 200 || align=left | Disc.: SDSS || |- id="2001 XM269" bgcolor=#d6d6d6 | 1 || || MBA-O || 17.1 || 2.1 km || multiple || 2001–2019 || 08 Jan 2019 || 20 || align=left | Disc.: LPL/Spacewatch II ||

Y

|- id="2001 YL" bgcolor=#FA8072 | 0 || 2001 YL || MCA || 19.64 || data-sort-value="0.41" | 410 m || multiple || 2001–2025 || 01 Jan 2025 || 111 || 6aJann=left | Disc.: LINEARAlt.: 2019 WF5 || |- id="2001 YM" bgcolor=#FA8072 | – || 2001 YM || MCA || 19.1 || data-sort-value="0.64" | 640 m || single || 5 days || 19 Dec 2001 || 14 || align=left | Disc.: LINEAR || |- id="2001 YQ" bgcolor=#E9E9E9 | 0 || 2001 YQ || MBA-M || 17.3 || 1.5 km || multiple || 2001–2018 || 14 Dec 2018 || 42 || align=left | Disc.: LINEARAlt.: 2014 WC6 || |- id="2001 YW" bgcolor=#FA8072 | 1 || 2001 YW || HUN || 18.1 || data-sort-value="0.71" | 710 m || multiple || 2001–2019 || 24 Jun 2019 || 112 || align=left | Disc.: LINEAR || |- id="2001 YZ" bgcolor=#FA8072 | 0 || 2001 YZ || MCA || 18.74 || data-sort-value="0.53" | 530 m || multiple || 2001–2020 || 18 Jul 2020 || 95 || align=left | Disc.: LINEAR || |- id="2001 YA1" bgcolor=#FFC2E0 | 5 || || AMO || 20.8 || data-sort-value="0.25" | 250 m || single || 62 days || 17 Feb 2002 || 22 || align=left | Disc.: LINEAR || |- id="2001 YB1" bgcolor=#FFC2E0 | 2 || || AMO || 21.7 || data-sort-value="0.16" | 160 m || multiple || 2001–2016 || 21 Dec 2016 || 36 || align=left | Disc.: LINEAR || |- id="2001 YC1" bgcolor=#FFC2E0 | – || || APO || 24.1 || data-sort-value="0.054" | 54 m || single || 2 days || 19 Dec 2001 || 13 || align=left | Disc.: LINEAR || |- id="2001 YD1" bgcolor=#FFC2E0 | 8 || || APO || 24.4 || data-sort-value="0.047" | 47 m || single || 7 days || 24 Dec 2001 || 32 || align=left | Disc.: LINEAR || |- id="2001 YE1" bgcolor=#FFC2E0 | 5 || || APO || 20.8 || data-sort-value="0.25" | 250 m || single || 58 days || 13 Feb 2002 || 120 || align=left | Disc.: LINEAR || |- id="2001 YM2" bgcolor=#FFC2E0 | 0 || || AMO || 19.68 || data-sort-value="0.45" | 420 m || multiple || 2001–2023 || 05 Aug 2023 || 221 || align=left | Disc.: LINEAR || |- id="2001 YN2" bgcolor=#FFC2E0 | 7 || || APO || 25.4 || data-sort-value="0.030" | 30 m || single || 21 days || 08 Jan 2002 || 35 || align=left | Disc.: LINEAR || |- id="2001 YO2" bgcolor=#FFC2E0 | 7 || || APO || 21.0 || data-sort-value="0.22" | 220 m || single || 24 days || 11 Jan 2002 || 25 || align=left | Disc.: LINEAR || |- id="2001 YP3" bgcolor=#FFC2E0 | 0 || || APO || 22.0 || data-sort-value="0.14" | 140 m || multiple || 2001–2005 || 10 Dec 2005 || 127 || align=left | Disc.: LINEARPotentially hazardous object || |- id="2001 YQ3" bgcolor=#FA8072 | 0 || || MCA || 17.7 || 1.6 km || multiple || 2001–2017 || 24 May 2017 || 88 || align=left | Disc.: LONEOSAlt.: 2017 HH3 || |- id="2001 YR3" bgcolor=#FFC2E0 | – || || AMO || 23.3 || data-sort-value="0.078" | 78 m || single || 4 days || 23 Dec 2001 || 19 || align=left | Disc.: LINEAR || |- id="2001 YT3" bgcolor=#FFC2E0 | 0 || || AMO || 21.14 || data-sort-value="0.25" | 220 m || multiple || 1991–2013 || 05 Apr 2013 || 121 || align=left | Disc.: Spacewatch || |- id="2001 YU3" bgcolor=#FFC2E0 | 0 || || AMO || 19.90 || data-sort-value="0.37" | 370 m || multiple || 2001–2021 || 09 Jun 2021 || 466 || align=left | Disc.: LINEAR || |- id="2001 YV3" bgcolor=#FFC2E0