List of unnumbered minor planets: 2003 H–L

This is a partial list of unnumbered minor planets for principal provisional designations assigned between 16 April and 15 June 2003. , a total of 122 bodies remain unnumbered for this period. Objects for this year are listed on the following pages: A–E · F–G · H–L · M–R · Si · Sii · Siii · Siv · T · Ui · Uii · Uiii · Uiv · V · Wi · Wii and X–Y. Also see previous and next year.

|- id="2003 HM" bgcolor=#FFC2E0 | 0 || 2003 HM || ATE || 21.8 || data-sort-value="0.16" | 160 m || multiple || 2003–2020 || 30 Jan 2020 || 69 || align=left | Disc.: LINEARPotentially hazardous object || |- id="2003 HN" bgcolor=#FFC2E0 | 0 || 2003 HN || APO || 19.9 || data-sort-value="0.37" | 370 m || multiple || 2003–2006 || 28 Oct 2006 || 340 || align=left | Disc.: AMOS || |- id="2003 HZ" bgcolor=#FA8072 | 0 || 2003 HZ || MCA || 17.61 || 1.7 km || multiple || 2003–2019 || 10 Jul 2019 || 145 || align=left | Disc.: LINEARAlt.: 2019 NE4 || |- id="2003 HC2" bgcolor=#fefefe | 1 || || HUN || 18.7 || data-sort-value="0.54" | 540 m || multiple || 2003–2020 || 22 Nov 2020 || 35 || align=left | Disc.: SpacewatchAdded on 17 January 2021 || |- id="2003 HE2" bgcolor=#fefefe | 1 || || MBA-I || 20.2 || data-sort-value="0.23" | 230 m || multiple || 2003-2022 || 24 Jun 2022 || 29 || align=left | Disc.: Spacewatch || |- id="2003 HD5" bgcolor=#fefefe | 0 || || MBA-I || 19.1 || data-sort-value="0.45" | 450 m || multiple || 2003–2020 || 23 Jan 2020 || 42 || align=left | Disc.: SpacewatchAlt.: 2017 HE65 || |- id="2003 HW10" bgcolor=#FFC2E0 | 5 || || APO || 27.0 || data-sort-value="0.014" | 14 m || single || 3 days || 28 Apr 2003 || 94 || align=left | Disc.: LPL/Spacewatch II || |- id="2003 HN16" bgcolor=#FFC2E0 | 0 || || APO || 22.15 || data-sort-value="0.12" | 110 m || multiple || 2003–2022 || 19 May 2022 || 85 || align=left | Disc.: LINEARAMO at MPC || |- id="2003 HX17" bgcolor=#fefefe | 0 || || MBA-I || 18.4 || data-sort-value="0.62" | 620 m || multiple || 2003–2020 || 17 Jun 2020 || 38 || align=left | Disc.: SpacewatchAdded on 22 July 2020 || |- id="2003 HK19" bgcolor=#fefefe | 0 || || MBA-I || 19.2 || data-sort-value="0.43" | 430 m || multiple || 2003–2020 || 27 Apr 2020 || 24 || align=left | Disc.: SpacewatchAdded on 19 October 2020 || |- id="2003 HP24" bgcolor=#fefefe | 0 || || MBA-I || 18.4 || data-sort-value="0.62" | 620 m || multiple || 2003–2019 || 05 Nov 2019 || 35 || align=left | Disc.: LPL/Spacewatch IIAdded on 21 August 2021Alt.: 2015 RB336 || |- id="2003 HO32" bgcolor=#FA8072 | 3 || || MCA || 22.1 || data-sort-value="0.11" | 110 m || multiple || 2003–2006 || 04 May 2006 || 41 || align=left | Disc.: SpacewatchAlt.: 2006 JY5 || |- id="2003 HP32" bgcolor=#FFC2E0 | 0 || || APO || 19.6 || data-sort-value="0.43" | 430 m || multiple || 2003–2012 || 22 May 2012 || 64 || align=left | Disc.: Spacewatch || |- id="2003 HT42" bgcolor=#FFC2E0 | 6 || || ATE || 24.8 || data-sort-value="0.039" | 39 m || single || 12 days || 11 May 2003 || 110 || align=left | Disc.: LINEAR || |- id="2003 HX56" bgcolor=#C2E0FF | 3 || || TNO || 7.1 || 158 km || multiple || 2003–2019 || 06 Jun 2019 || 23 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, other TNO, BR-mag: 1.01 || |- id="2003 HZ56" bgcolor=#C2E0FF | 3 || || TNO || 7.5 || 105 km || multiple || 2003–2013 || 14 May 2013 || 17 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano (cold) || |- id="2003 HA57" bgcolor=#C2E0FF | 4 || || TNO || 8.1 || 113 km || multiple || 2003–2019 || 07 May 2019 || 17 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, plutino || |- id="2003 HD57" bgcolor=#C2E0FF | 4 || || TNO || 7.9 || 124 km || multiple || 2003–2014 || 01 May 2014 || 23 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, plutino || |- id="2003 HE57" bgcolor=#C2E0FF | 4 || || TNO || 7.3 || 178 km || multiple || 2003–2015 || 26 Apr 2015 || 25 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano (hot) || |- id="2003 HF57" bgcolor=#C2E0FF | 3 || || TNO || 8.6 || 90 km || multiple || 2003–2017 || 29 May 2017 || 27 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, plutino || |- id="2003 HH57" bgcolor=#C2E0FF | 4 || || TNO || 7.4 || 110 km || multiple || 2003–2013 || 14 May 2013 || 19 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano (cold) || |- id="2003 HJ57" bgcolor=#C2E0FF | E || || TNO || 8.3 || 103 km || single || 1 day || 27 Apr 2003 || 4 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, plutino? || |- id="2003 HK57" bgcolor=#C2E0FF | 9 || || TNO || 8.0 || 86 km || single || 1 day || 27 Apr 2003 || 4 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2003 HL57" bgcolor=#C2E0FF | 9 || || TNO || 6.3 || 189 km || single || 1 day || 27 Apr 2003 || 7 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2003 HN57" bgcolor=#C2E0FF | 9 || || TNO || 7.5 || 109 km || single || 34 days || 30 May 2003 || 7 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano? || |- id="2003 HO57" bgcolor=#C2E0FF | 3 || || TNO || 8.0 || 83 km || multiple || 2003–2019 || 05 Apr 2019 || 15 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, cubewano (cold) || |- id="2003 HP57" bgcolor=#C2E0FF | 9 || || TNO || 6.4 || 218 km || single || 1 day || 27 Apr 2003 || 4 || align=left | Disc.: Mauna Kea Obs.LoUTNOs, other TNO || |- id="2003 HD61" bgcolor=#E9E9E9 | 2 || || MBA-M || 18.70 || data-sort-value="0.54" | 540 m || multiple || 2003–2020 || 17 Aug 2020 || 53 || align=left | Disc.: Spacewatch || |- id="2003 HD62" bgcolor=#fefefe | 0 || || MBA-I || 17.9 || data-sort-value="0.78" | 780 m || multiple || 2003–2018 || 14 Jun 2018 || 32 || align=left | Disc.: SDSS || |- id="2003 HH62" bgcolor=#fefefe | 0 || || MBA-I || 18.6 || data-sort-value="0.57" | 570 m || multiple || 2003–2017 || 20 Apr 2017 || 36 || align=left | Disc.: Spacewatch || |- id="2003 HN62" bgcolor=#fefefe | 0 || || MBA-I || 19.0 || data-sort-value="0.47" | 470 m || multiple || 2003–2020 || 14 Sep 2020 || 40 || align=left | Disc.: Spacewatch || |- id="2003 HS62" bgcolor=#fefefe | 0 || || HUN || 18.8 || data-sort-value="0.52" | 520 m || multiple || 2003–2019 || 08 Jan 2019 || 24 || align=left | Disc.: SDSS || |- id="2003 HU64" bgcolor=#fefefe | 0 || || MBA-I || 19.25 || data-sort-value="0.42" | 420 m || multiple || 2003–2021 || 09 Jul 2021 || 43 || align=left | Disc.: Spacewatch || |- id="2003 HB65" bgcolor=#fefefe | 0 || || MBA-I || 18.6 || data-sort-value="0.57" | 570 m || multiple || 2003–2019 || 23 Oct 2019 || 40 || align=left | Disc.: Spacewatch || |- id="2003 HR65" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.5 || data-sort-value="0.84" | 840 m || multiple || 2003–2020 || 28 Apr 2020 || 44 || align=left | Disc.: SpacewatchAdded on 22 July 2020 || |- id="2003 HU65" bgcolor=#fefefe | 0 || || MBA-I || 19.03 || data-sort-value="0.46" | 460 m || multiple || 2003–2021 || 06 Oct 2021 || 42 || align=left | Disc.: SpacewatchAdded on 22 July 2020 || |- id="2003 HX65" bgcolor=#fefefe | 0 || || MBA-I || 18.6 || data-sort-value="0.57" | 570 m || multiple || 2003–2020 || 22 Aug 2020 || 49 || align=left | Disc.: SpacewatchAdded on 19 October 2020 || |- id="2003 HA66" bgcolor=#FA8072 | 0 || || HUN || 19.62 || data-sort-value="0.35" | 350 m || multiple || 2003–2021 || 03 Dec 2021 || 32 || align=left | Disc.: SDSSAdded on 9 March 2021 || |- id="2003 HC66" bgcolor=#E9E9E9 | 1 || || MBA-M || 19.02 || data-sort-value="0.87" | 870 m || multiple || 2003–2021 || 12 Jun 2021 || 34 || align=left | Disc.: SpacewatchAdded on 17 June 2021 || |- id="2003 HE66" bgcolor=#d6d6d6 | 1 || || MBA-O || 17.92 || 1.6 km || multiple || 2003–2014 || 24 Jun 2014 || 42 || align=left | Disc.: SDSSAdded on 24 December 2021 ||

|- id="2003 JB2" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.11 || 1.0 km || multiple || 2003–2021 || 04 Aug 2021 || 36 || align=left | Disc.: LPL/Spacewatch II || |- id="2003 JX2" bgcolor=#FFC2E0 | 8 || || APO || 26.4 || data-sort-value="0.019" | 19 m || single || 2 days || 03 May 2003 || 31 || align=left | Disc.: LINEAR || |- id="2003 JY2" bgcolor=#FFC2E0 | 8 || || APO || 24.6 || data-sort-value="0.043" | 43 m || single || 4 days || 06 May 2003 || 35 || align=left | Disc.: LINEAR || |- id="2003 JB4" bgcolor=#E9E9E9 | 3 || || MBA-M || 17.88 || data-sort-value="0.79" | 790 m || multiple || 2003–2021 || 30 Oct 2021 || 39 || align=left | Disc.: KLENOT || |- id="2003 JG4" bgcolor=#FFC2E0 | 7 || || AMO || 22.9 || data-sort-value="0.093" | 93 m || single || 29 days || 01 Jun 2003 || 36 || align=left | Disc.: Spacewatch || |- id="2003 JD11" bgcolor=#FFC2E0 | 6 || || APO || 24.3 || data-sort-value="0.049" | 49 m || single || 6 days || 11 May 2003 || 97 || align=left | Disc.: LINEAR || |- id="2003 JD13" bgcolor=#FFC2E0 | 0 || || AMO || 20.00 || data-sort-value="0.36" | 360 m || multiple || 2003–2021 || 01 Nov 2021 || 161 || align=left | Disc.: LINEAR || |- id="2003 JF13" bgcolor=#FA8072 | 3 || || MCA || 19.9 || data-sort-value="0.31" | 310 m || multiple || 2003–2007 || 26 Apr 2007 || 42 || align=left | Disc.: Spacewatch || |- id="2003 JO14" bgcolor=#FFC2E0 | 7 || || APO || 25.2 || data-sort-value="0.032" | 32 m || single || 2 days || 11 May 2003 || 41 || align=left | Disc.: LINEAR || |- id="2003 JP14" bgcolor=#FFC2E0 | 6 || || APO || 22.3 || data-sort-value="0.12" | 120 m || single || 30 days || 08 Jun 2003 || 51 || align=left | Disc.: LINEAR || |- id="2003 JV14" bgcolor=#FFC2E0 | 0 || || APO || 21.41 || data-sort-value="0.18" | 180 m || multiple || 2003-2023 || 15 Oct 2023 || 92 || align=left | Disc.: Spacewatch || |- id="2003 JP15" bgcolor=#fefefe | 0 || || MBA-I || 18.8 || data-sort-value="0.52" | 520 m || multiple || 2003–2020 || 22 Oct 2020 || 48 || align=left | Disc.: LPL/Spacewatch IIAdded on 17 January 2021Alt.: 2007 UH74 || |- id="2003 JA17" bgcolor=#FA8072 | 1 || || MCA || 17.94 || data-sort-value="0.94" | 940 m || multiple || 2003-2024 || 29 Sep 2024 || 62 || align=left | Disc.: LINEARAlt.: 2024 RO16 || |- id="2003 JC17" bgcolor=#FFC2E0 | 0 || || APO || 17.88 || data-sort-value="0.94" | 940 m || multiple || 2003–2021 || 11 Jul 2021 || 122 || align=left | Disc.: LINEARNEO larger than 1 kilometer || |- id="2003 JD17" bgcolor=#FFC2E0 | 5 || || AMO || 21.1 || data-sort-value="0.21" | 210 m || single || 109 days || 29 Aug 2003 || 40 || align=left | Disc.: LINEAR || |- id="2003 JC20" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.1 || data-sort-value="0.71" | 710 m || multiple || 2003–2020 || 13 Sep 2020 || 55 || align=left | Disc.: LPL/Spacewatch II || |- id="2003 JY20" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.1 || 1.0 km || multiple || 2003–2020 || 26 Apr 2020 || 48 || align=left | Disc.: SpacewatchAdded on 22 July 2020 || |- id="2003 JE21" bgcolor=#fefefe | 0 || || MBA-I || 19.00 || data-sort-value="0.47" | 470 m || multiple || 2003–2021 || 01 May 2021 || 44 || align=left | Disc.: SpacewatchAdded on 11 May 2021 || |- id="2003 JG21" bgcolor=#fefefe | 0 || || MBA-I || 18.7 || data-sort-value="0.54" | 540 m || multiple || 2003–2021 || 12 Jun 2021 || 93 || align=left | Disc.: LPL/Spacewatch IIAdded on 17 June 2021 || |- id="2003 JH21" bgcolor=#fefefe | 0 || || MBA-I || 18.4 || data-sort-value="0.62" | 620 m || multiple || 2003–2018 || 11 Apr 2018 || 24 || align=left | Disc.: SpacewatchAdded on 21 August 2021 ||

|- id="2003 KT2" bgcolor=#E9E9E9 | – || || MBA-M || 18.9 || data-sort-value="0.92" | 920 m || single || 3 days || 25 May 2003 || 16 || align=left | Disc.: VATT || |- id="2003 KH3" bgcolor=#fefefe | – || || MBA-I || 19.6 || data-sort-value="0.36" | 360 m || single || 3 days || 26 May 2003 || 9 || align=left | Disc.: LPL/Spacewatch II || |- id="2003 KF4" bgcolor=#FFC2E0 | 5 || || APO || 23.3 || data-sort-value="0.078" | 78 m || single || 15 days || 08 Jun 2003 || 107 || align=left | Disc.: Desert Eagle Obs.AMO at MPC || |- id="2003 KT5" bgcolor=#E9E9E9 | 3 || || MBA-M || 18.8 || data-sort-value="0.73" | 730 m || multiple || 2003–2020 || 27 Apr 2020 || 26 || align=left | Disc.: SpacewatchAdded on 22 July 2020 || |- id="2003 KW5" bgcolor=#E9E9E9

List of unnumbered minor planets: 2003 H–L

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