This is a partial list of unnumbered minor planets for principal provisional designations assigned between 1 May and 31 July 2004. , a total of 149 bodies remain unnumbered for this period. Objects for this year are listed on the following pages: A–B · C · D–E · F · G–H · J–O · P–Q · Ri · Rii · Riii · S · Ti · Tii · Tiii · Tiv · U–V · W–X and Y. Also see previous and next year.
J
|- id="2004 JB" bgcolor=#FFC2E0 | 6 || 2004 JB || AMO || 22.5 || data-sort-value="0.11" | 110 m || single || 29 days || 30 May 2004 || 25 || align=left | — || |- id="2004 JC" bgcolor=#FFC2E0 | 9 || 2004 JC || APO || 20.5 || data-sort-value="0.28" | 280 m || single || 21 days || 29 May 2004 || 55 || align=left | — || |- id="2004 JN1" bgcolor=#FFC2E0 | 0 || || APO || 23.7 || data-sort-value="0.065" | 65 m || multiple || 2004–2021 || 15 Jun 2021 || 104 || align=left | — || |- id="2004 JO1" bgcolor=#FFC2E0 | 8 || || APO || 20.9 || data-sort-value="0.23" | 230 m || single || 20 days || 30 May 2004 || 124 || align=left | — || |- id="2004 JP1" bgcolor=#FFC2E0 | 2 || || APO || 22.7 || data-sort-value="0.10" | 100 m || multiple || 2004–2016 || 23 Nov 2016 || 184 || align=left | — || |- id="2004 JR1" bgcolor=#FFC2E0 | 0 || || AMO || 17.5 || 1.1 km || multiple || 1999–2019 || 24 Dec 2019 || 529 || align=left | NEO larger than 1 kilometerAlt.: 1999 LL4 || |- id="2004 JM2" bgcolor=#fefefe | 0 || || MBA-I || 18.9 || data-sort-value="0.49" | 490 m || multiple || 2004–2015 || 08 Sep 2015 || 33 || align=left | Alt.: 2011 GX17 || |- id="2004 JU2" bgcolor=#fefefe | 0 || || MBA-I || 19.25 || data-sort-value="0.42" | 420 m || multiple || 2004–2019 || 02 Apr 2019 || 21 || align=left | Disc.: LPL/Spacewatch IIAdded on 17 June 2021Alt.: 2015 AD223 || |- id="2004 JY3" bgcolor=#fefefe | 1 || || MBA-I || 19.06 || data-sort-value="0.37" | 370 m || multiple || 2004-2022 || 02 Jun 2022 || 43 || align=left | — || |- id="2004 JP9" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.6 || 1.3 km || multiple || 2004–2021 || 09 Jun 2021 || 24 || align=left | Disc.: LPL/Spacewatch IIAdded on 17 June 2021 || |- id="2004 JO12" bgcolor=#FFC2E0 | 7 || || AMO || 23.8 || data-sort-value="0.062" | 62 m || single || 9 days || 23 May 2004 || 54 || align=left | — || |- id="2004 JP12" bgcolor=#FFC2E0 | 1 || || APO || 23.59 || data-sort-value="0.074" | 74 m || multiple || 2004-2025 || 16 May 2025 || 32 || align=left | — || |- id="2004 JO20" bgcolor=#FFC2E0 | 5 || || APO || 26.2 || data-sort-value="0.020" | 20 m || single || 3 days || 17 May 2004 || 35 || align=left | — || |- id="2004 JU20" bgcolor=#FFC2E0 | 8 || || AMO || 25.3 || data-sort-value="0.031" | 31 m || single || 3 days || 16 May 2004 || 8 || align=left | — || |- id="2004 JV20" bgcolor=#FFC2E0 | 8 || || APO || 24.0 || data-sort-value="0.056" | 56 m || single || 2 days || 17 May 2004 || 22 || align=left | — || | 0 || || MCA || 19.1 || data-sort-value="0.45" | 450 m || multiple || 2004–2021 || 21 Jun 2021 || 34 || align=left | — || |- id="2004 JH39" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.2 || 2.0 km || multiple || 2004–2021 || 10 May 2021 || 33 || align=left | Disc.: SpacewatchAdded on 17 June 2021 || |- id="2004 JM48" bgcolor=#fefefe | 0 || || MBA-I || 19.0 || data-sort-value="0.47" | 470 m || multiple || 2004–2020 || 16 Jun 2020 || 39 || align=left | Alt.: 2007 HU29 || |- id="2004 JH49" bgcolor=#fefefe | 0 || || MBA-I || 18.5 || data-sort-value="0.59" | 590 m || multiple || 2004–2020 || 20 Oct 2020 || 43 || align=left | Disc.: SpacewatchAdded on 19 October 2020 || |- id="2004 JH56" bgcolor=#d6d6d6 | 0 || || MBA-O || 16.83 || 2.7 km || multiple || 2004–2021 || 16 Apr 2021 || 40 || align=left | Alt.: 2010 DV16 || |- id="2004 JD57" bgcolor=#FA8072 | 0 || || MCA || 18.9 || data-sort-value="0.49" | 490 m || multiple || 2004–2020 || 22 Apr 2020 || 58 || align=left | — || |- id="2004 JH57" bgcolor=#fefefe | 0 || || MBA-I || 18.5 || data-sort-value="0.59" | 590 m || multiple || 2004–2019 || 02 Jan 2019 || 43 || align=left | — || |- id="2004 JN57" bgcolor=#fefefe | 0 || || MBA-I || 19.0 || data-sort-value="0.47" | 470 m || multiple || 2004–2018 || 23 Apr 2018 || 35 || align=left | — || |- id="2004 JR57" bgcolor=#fefefe | 0 || || MBA-I || 18.2 || data-sort-value="0.68" | 680 m || multiple || 2004–2016 || 05 Dec 2016 || 32 || align=left | — || |- id="2004 JU57" bgcolor=#fefefe | 0 || || MBA-I || 18.1 || data-sort-value="0.71" | 710 m || multiple || 2004–2019 || 26 Nov 2019 || 63 || align=left | — || |- id="2004 JR58" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.43 || 1.8 km || multiple || 2004–2021 || 30 May 2021 || 40 || align=left | Disc.: LPL/Spacewatch IIAdded on 11 May 2021 || |- id="2004 JU58" bgcolor=#E9E9E9 | 3 || || MBA-M || 18.0 || data-sort-value="0.75" | 750 m || multiple || 2004–2016 || 02 Mar 2016 || 17 || align=left | Disc.: SpacewatchAdded on 29 January 2022 ||
K
|- id="2004 KA" bgcolor=#FFC2E0 | 0 || 2004 KA || AMO || 21.02 || data-sort-value="0.22" | 220 m || multiple || 2004–2021 || 26 Oct 2021 || 267 || align=left | — || |- id="2004 KB" bgcolor=#FFC2E0 | 0 || 2004 KB || APO || 21.1 || data-sort-value="0.22" | 220 m || multiple || 2004–2026 || 03 May 2026 || 102 || align=left | Potentially hazardous object || |- id="2004 KZ" bgcolor=#FFC2E0 | 8 || 2004 KZ || APO || 25.5 || data-sort-value="0.028" | 28 m || single || 2 days || 20 May 2004 || 26 || align=left | — || |- id="2004 KF1" bgcolor=#FFC2E0 | 1 || || AMO || 20.8 || data-sort-value="0.25" | 250 m || multiple || 2004–2007 || 10 Mar 2007 || 101 || align=left | — || |- id="2004 KG1" bgcolor=#FFC2E0 | 0 || || ATE || 24.04 || data-sort-value="0.054" | 60 m || multiple || 2004-2ß23 || 24 Jul 2023 || 104 || align=left | — || |- id="2004 KR2" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.14 || data-sort-value="0.99" | 990 m || multiple || 2004–2021 || 18 May 2021 || 51 || align=left | Disc.: SpacewatchAdded on 11 May 2021 || |- id="2004 KN10" bgcolor=#FFC2E0 | 6 || || AMO || 23.6 || data-sort-value="0.068" | 68 m || single || 24 days || 14 Jun 2004 || 45 || align=left | — || |- id="2004 KF15" bgcolor=#FFC2E0 | 0 || || AMO || 20.7 || data-sort-value="0.26" | 260 m || multiple || 2004–2019 || 08 Oct 2019 || 119 || align=left | — || |- id="2004 KE17" bgcolor=#FFC2E0 | 5 || || AMO || 21.5 || data-sort-value="0.18" | 180 m || single || 10 days || 07 Jun 2004 || 61 || align=left | Potentially hazardous object || |- id="2004 KF17" bgcolor=#FFC2E0 | 5 || || APO || 26.1 || data-sort-value="0.021" | 21 m || single || 3 days || 31 May 2004 || 41 || align=left | — || |- id="2004 KG17" bgcolor=#FFC2E0 | 7 || || AMO || 27.1 || data-sort-value="0.014" | 14 m || single || 6 days || 03 Jun 2004 || 13 || align=left | — || |- id="2004 KV18" bgcolor=#C2E0FF | 4 || || TNO || 8.9 || 92 km || multiple || 2004–2016 || 29 May 2016 || 22 || align=left | LoUTNOs, centaur || |- id="2004 KZ18" bgcolor=#C2E0FF | 2 || || TNO || 8.4 || 76 km || multiple || 2004–2015 || 12 Jun 2015 || 18 || align=left | LoUTNOs, res2:5 || |- id="2004 KB19" bgcolor=#C2E0FF | 3 || || TNO || 7.4 || 114 km || multiple || 2004–2015 || 15 Apr 2015 || 19 || align=left | LoUTNOs, plutino, binary: 108 km || |- id="2004 KC19" bgcolor=#C2E0FF | 2 || || TNO || 8.2 || 108 km || multiple || 2004–2016 || 29 May 2016 || 19 || align=left | LoUTNOs, plutino || |- id="2004 KD19" bgcolor=#C2E0FF | 4 || || TNO || 7.4 || 138 km || multiple || 2004–2008 || 05 May 2008 || 14 || align=left | LoUTNOs, other TNO || |- id="2004 KE19" bgcolor=#C2E0FF | 2 || || TNO || 6.4 || 174 km || multiple || 2004–2020 || 23 Jun 2020 || 25 || align=left | LoUTNOs, cubewano (cold), binary: 129 km || |- id="2004 KF19" bgcolor=#C2E0FF | 2 || || TNO || 6.9 || 139 km || multiple || 2004–2016 || 08 Jun 2016 || 22 || align=left | LoUTNOs, cubewano (cold) || |- id="2004 KG19" bgcolor=#C2E0FF | 3 || || TNO || 7.4 || 110 km || multiple || 2004–2015 || 15 Apr 2015 || 19 || align=left | LoUTNOs, cubewano (cold) || |- id="2004 KH19" bgcolor=#C2E0FF | 4 || || TNO || 6.4 || 218 km || multiple || 2004–2016 || 08 Jun 2016 || 23 || align=left | LoUTNOs, other TNO, binary: 135 km || |- id="2004 KJ19" bgcolor=#C2E0FF | 3 || || TNO || 7.1 || 158 km || multiple || 2004–2019 || 06 Jun 2019 || 83 || align=left | LoUTNOs, other TNO || |- id="2004 KK19" bgcolor=#C2E0FF | 3 || || TNO || 7.2 || 125 km || multiple || 2004–2010 || 20 Mar 2010 || 24 || align=left | LoUTNOs, cubewano? || |- id="2004 KL19" bgcolor=#C2E0FF | 3 || || TNO || 8.7 || 66 km || multiple || 2004–2008 || 05 May 2008 || 20 || align=left | LoUTNOs, twotino || |- id="2004 KM19" bgcolor=#C2E0FF | 3 || || TNO || 8.2 || 83 km || multiple || 2004–2008 || 08 Jun 2008 || 18 || align=left | LoUTNOs, twotino || |- id="2004 KY20" bgcolor=#fefefe | 0 || || HUN || 18.6 || data-sort-value="0.57" | 570 m || multiple || 2004–2018 || 14 Dec 2018 || 31 || align=left | — || |- id="2004 KY21" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.6 || 1.7 km || multiple || 2004–2019 || 03 Sep 2019 || 25 || align=left | — || |- id="2004 KH22" bgcolor=#d6d6d6 | 0 || || HIL || 16.7 || 2.5 km || multiple || 2004–2015 || 09 Dec 2015 || 23 || align=left | Disc.: Pan-STARRSAdded on 22 July 2020 ||
L
|- id="2004 LB" bgcolor=#FFC2E0 | 2 || 2004 LB || APO || 21.6 || data-sort-value="0.17" | 170 m || multiple || 2004–2018 || 14 Jun 2018 || 157 || align=left | Potentially hazardous object || |- id="2004 LC" bgcolor=#FFC2E0 | 7 || 2004 LC || APO || 24.4 || data-sort-value="0.047" | 47 m || single || 7 days || 15 Jun 2004 || 79 || align=left | — || |- id="2004 LK" bgcolor=#FFC2E0 | 0 || 2004 LK || AMO || 22.7 || data-sort-value="0.10" | 100 m || multiple || 2004–2007 || 24 May 2007 || 67 || align=left | — || |- id="2004 LV" bgcolor=#FFC2E0 | 6 || 2004 LV || APO || 24.1 || data-sort-value="0.054" | 54 m || single || 3 days || 12 Jun 2004 || 21 || align=left | — || |- id="2004 LB1" bgcolor=#FFC2E0 | 5 || || APO || 23.2 || data-sort-value="0.081" | 81 m || single || 9 days || 19 Jun 2004 || 40 || align=left | — || |- id="2004 LB2" bgcolor=#FFC2E0 | 8 || || APO || 22.3 || data-sort-value="0.12" | 120 m || single || 4 days || 15 Jun 2004 || 54 || align=left | — || |- id="2004 LD2" bgcolor=#FFC2E0 | 6 || || AMO || 21.2 || data-sort-value="0.20" | 200 m || single || 32 days || 13 Jul 2004 || 57 || align=left | — || |- id="2004 LO2" bgcolor=#FFC2E0 | 7 || || ATE || 25.0 || data-sort-value="0.036" | 36 m || single || 4 days || 15 Jun 2004 || 31 || align=left | — || |- id="2004 LX5" bgcolor=#FFC2E0 | 8 || || AMO || 25.6 || data-sort-value="0.027" | 27 m || single || 1 day || 13 Jun 2004 || 18 || align=left | — || |- id="2004 LY5" bgcolor=#FFC2E0 | 0 || || APO || 21.68 || data-sort-value="0.18" | 180 m || multiple || 2004-2022 || 13 Feb 2022 || 66 || align=left | Potentially hazardous object || |- id="2004 LZ5" bgcolor=#FFC2E0 | 0 || || AMO || 18.43 || data-sort-value="0.73" | 730 m || multiple || 2004–2021 || 13 Sep 2021 || 90 || align=left | — || |- id="2004 LA6" bgcolor=#FFC2E0 | 6 || || AMO || 21.8 || data-sort-value="0.16" | 160 m || single || 41 days || 24 Jul 2004 || 43 || align=left | — || |- id="2004 LA10" bgcolor=#FFC2E0 | 5 || || AMO || 25.1 || data-sort-value="0.034" | 34 m || single || 14 days || 28 Jun 2004 || 52 || align=left | — || |- id="2004 LH18" bgcolor=#FA8072 | 0 || || MCA || 19.8 || data-sort-value="0.61" | 610 m || multiple || 2004–2019 || 04 Aug 2019 || 43 || align=left | Alt.: 2019 MZ1 || |- id="2004 LR18" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.6 || 1.7 km || multiple || 2004–2014 || 23 Nov 2014 || 31 || align=left | Alt.: 2014 WS244 || |- id="2004 LQ19" bgcolor=#fefefe | 1 || || MBA-I || 18.4 || data-sort-value="0.62" | 620 m || multiple || 2004–2019 || 31 Oct 2019 || 41 || align=left | — || |- id="2004 LA24" bgcolor=#fefefe | 0 || || HUN || 18.8 || data-sort-value="0.52" | 520 m || multiple || 2004–2020 || 30 Jun 2020 || 20 || align=left | Disc.: SpacewatchAdded on 13 September 2020 || |- id="2004 LN27" bgcolor=#E9E9E9