This is a partial list of unnumbered minor planets for principal provisional designations assigned during 1–30 April 2004. , a total of 110 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.
G
|- id="2004 GA" bgcolor=#FFC2E0 | 0 || 2004 GA || AMO || 20.21 || data-sort-value="0.34" | 340 m || multiple || 2004-2022 || 16 Dec 2022 || 191 || align=left | — || |- id="2004 GD" bgcolor=#FFC2E0 | 6 || 2004 GD || APO || 23.7 || data-sort-value="0.065" | 65 m || single || 11 days || 20 Apr 2004 || 66 || align=left | — || |- id="2004 GB2" bgcolor=#FFC2E0 | 5 || || APO || 21.0 || data-sort-value="0.22" | 220 m || single || 45 days || 23 May 2004 || 38 || align=left | Potentially hazardous object || |- id="2004 GC2" bgcolor=#FA8072 | 1 || || MCA || 20.23 || data-sort-value="0.33" | 330 m || multiple || 2004-2025 || 21 Apr 2025 || 41 || align=left | — || |- id="2004 GD2" bgcolor=#FFC2E0 | 5 || || AMO || 24.3 || data-sort-value="0.049" | 49 m || single || 20 days || 02 May 2004 || 150 || align=left | — || |- id="2004 GE2" bgcolor=#FFC2E0 | 6 || || APO || 21.5 || data-sort-value="0.18" | 180 m || single || 12 days || 24 Apr 2004 || 93 || align=left | Potentially hazardous object || |- id="2004 GJ5" bgcolor=#FA8072 | 0 || || MCA || 19.2 || data-sort-value="0.43" | 430 m || multiple || 2004–2020 || 31 Jan 2020 || 66 || align=left | Alt.: 2017 ER21 || |- id="2004 GH6" bgcolor=#fefefe | 0 || || MBA-I || 18.4 || data-sort-value="0.62" | 620 m || multiple || 2004–2020 || 16 Aug 2020 || 38 || align=left | Disc.: LPL/Spacewatch IIAdded on 19 October 2020 || |- id="2004 GJ6" bgcolor=#fefefe | 0 || || MBA-I || 19.27 || data-sort-value="0.42" | 420 m || multiple || 2004–2021 || 09 Jul 2021 || 59 || align=left | Disc.: LPL/Spacewatch IIAdded on 17 June 2021 || |- id="2004 GB7" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.7 || 1.6 km || multiple || 2004–2021 || 08 Jun 2021 || 35 || align=left | —Added on 22 July 2020Alt.: 2015 FK318 || |- id="2004 GJ10" bgcolor=#fefefe | 0 || || MBA-I || 18.5 || data-sort-value="0.59" | 590 m || multiple || 2004–2020 || 13 Sep 2020 || 33 || align=left | Alt.: 2015 BA486 || |- id="2004 GK11" bgcolor=#FA8072 | 0 || || MCA || 17.75 || 1.2 km || multiple || 2004–2021 || 18 May 2021 || 110 || align=left | — || |- id="2004 GZ14" bgcolor=#FFC2E0 | 7 || || APO || 23.9 || data-sort-value="0.059" | 59 m || single || 8 days || 21 Apr 2004 || 58 || align=left | — || |- id="2004 GB19" bgcolor=#FFC2E0 | 7 || || APO || 23.0 || data-sort-value="0.089" | 89 m || single || 21 days || 06 May 2004 || 50 || align=left | — || |- id="2004 GC19" bgcolor=#FFC2E0 | 6 || || APO || 24.1 || data-sort-value="0.054" | 54 m || single || 10 days || 25 Apr 2004 || 47 || align=left | — || |- id="2004 GY27" bgcolor=#FA8072 | 1 || || MCA || 18.65 || 1.0 km || multiple || 2004-2025 || 19 Oct 2025 || 50 || align=left | — || |- id="2004 GB39" bgcolor=#d6d6d6 | 1 || || MBA-O || 16.6 || 2.7 km || multiple || 2004–2021 || 10 Mar 2021 || 49 || align=left | Alt.: 2020 YR8 || |- id="2004 GP45" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.4 || 1.8 km || multiple || 2004–2018 || 23 Jan 2018 || 30 || align=left | — || |- id="2004 GR45" bgcolor=#fefefe | 0 || || MBA-I || 18.58 || data-sort-value="0.57" | 570 m || multiple || 2001–2020 || 13 Sep 2020 || 39 || align=left | — || |- id="2004 GA46" bgcolor=#E9E9E9 | 1 || || MBA-M || 17.2 || 1.1 km || multiple || 2004–2020 || 17 Apr 2020 || 33 || align=left | Alt.: 2008 GN126 || |- id="2004 GA47" bgcolor=#E9E9E9 | 4 || || MBA-M || 19.29 || data-sort-value="0.51" | 510 m || multiple || 2004-2026 || 12 May 2026 || 30 || align=left | — || |- id="2004 GR47" bgcolor=#d6d6d6 | 1 || || MBA-O || 17.2 || 2.0 km || multiple || 2004–2021 || 11 May 2021 || 47 || align=left | Disc.: SpacewatchAdded on 11 May 2021Alt.: 2021 EM21 || |- id="2004 GZ48" bgcolor=#fefefe | – || || MBA-I || 18.9 || data-sort-value="0.49" | 490 m || single || 13 days || 25 Apr 2004 || 9 || align=left | — || |- id="2004 GR49" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.67 || data-sort-value="0.80" | 800 m || multiple || 2004-2024 || 01 Nov 2024 || 53 || align=left | — || |- id="2004 GR51" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.27 || data-sort-value="0.93" | 930 m || multiple || 2004–2021 || 19 Mar 2021 || 26 || align=left | Disc.: SpacewatchAdded on 21 August 2021 || |- id="2004 GP52" bgcolor=#E9E9E9 | 3 || || MBA-M || 18.0 || 1.1 km || multiple || 2004–2017 || 27 Mar 2017 || 19 || align=left | Disc.: SpacewatchAdded on 21 August 2021 || |- id="2004 GB53" bgcolor=#fefefe | 0 || || MBA-I || 18.6 || data-sort-value="0.57" | 570 m || multiple || 2004–2021 || 18 Feb 2021 || 34 || align=left | Disc.: SpacewatchAdded on 9 March 2021 || |- id="2004 GC53" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.5 || data-sort-value="0.84" | 840 m || multiple || 2004–2021 || 09 Apr 2021 || 31 || align=left | — || |- id="2004 GR53" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.3 || data-sort-value="0.92" | 920 m || multiple || 2004–2021 || 04 May 2021 || 24 || align=left | Disc.: SpacewatchAdded on 17 June 2021 || |- id="2004 GR54" bgcolor=#fefefe | 0 || || MBA-I || 19.2 || data-sort-value="0.43" | 430 m || multiple || 2004–2015 || 17 Apr 2015 || 26 || align=left | — || |- id="2004 GK55" bgcolor=#fefefe | 0 || || MBA-I || 18.9 || data-sort-value="0.49" | 490 m || multiple || 2004–2020 || 13 Sep 2020 || 34 || align=left | Alt.: 2015 BC314 || |- id="2004 GA58" bgcolor=#fefefe | 0 || || MBA-I || 19.2 || data-sort-value="0.43" | 430 m || multiple || 2004–2020 || 27 Jan 2020 || 34 || align=left | — || |- id="2004 GK58" bgcolor=#FA8072 | 1 || || HUN || 18.7 || data-sort-value="0.54" | 540 m || multiple || 2004–2019 || 07 Apr 2019 || 47 || align=left | Alt.: 2014 ET48 || |- id="2004 GN58" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.3 || data-sort-value="0.92" | 920 m || multiple || 2004–2021 || 03 May 2021 || 34 || align=left | Disc.: LPL/Spacewatch IIAdded on 11 May 2021Alt.: 2021 FR19 || |- id="2004 GX59" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.1 || 2.1 km || multiple || 2004–2018 || 25 Jan 2018 || 20 || align=left | — || |- id="2004 GP62" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.3 || data-sort-value="0.92" | 920 m || multiple || 2004–2021 || 14 May 2021 || 39 || align=left | Disc.: SpacewatchAdded on 21 August 2021Alt.: 2017 MG20 || |- id="2004 GT64" bgcolor=#fefefe | 0 || || MBA-I || 18.5 || data-sort-value="0.59" | 590 m || multiple || 2004–2019 || 26 Sep 2019 || 40 || align=left | — || |- id="2004 GE68" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.9 || 1.5 km || multiple || 2004–2018 || 07 Aug 2018 || 38 || align=left | — || |- id="2004 GF70" bgcolor=#E9E9E9 | 2 || || MBA-M || 18.2 || data-sort-value="0.96" | 960 m || multiple || 2004–2017 || 26 Apr 2017 || 16 || align=left | — || |- id="2004 GE81" bgcolor=#fefefe | 0 || || MBA-I || 18.1 || data-sort-value="0.71" | 710 m || multiple || 2004–2009 || 19 Sep 2009 || 25 || align=left | Alt.: 2008 EG139 || |- id="2004 GS88" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.9 || 1.5 km || multiple || 2004–2019 || 26 Sep 2019 || 27 || align=left | Disc.: VATTAdded on 17 June 2021 || |- id="2004 GR90" bgcolor=#E9E9E9 | 1 || || MBA-M || 17.7 || 1.2 km || multiple || 2004–2017 || 27 Mar 2017 || 30 || align=left | — || |- id="2004 GG91" bgcolor=#fefefe | 0 || || MBA-I || 18.5 || data-sort-value="0.59" | 590 m || multiple || 2004–2019 || 27 Oct 2019 || 42 || align=left | — || |- id="2004 GE92" bgcolor=#fefefe | 0 || || MBA-I || 18.9 || data-sort-value="0.49" | 490 m || multiple || 2004–2018 || 13 Aug 2018 || 41 || align=left | — || |- id="2004 GJ92" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.38 || data-sort-value="0.89" | 890 m || multiple || 2004–2021 || 28 Jun 2021 || 83 || align=left | Disc.: NEATAdded on 11 May 2021 ||
H
|- id="2004 HB" bgcolor=#FFC2E0 | 8 || 2004 HB || APO || 23.9 || data-sort-value="0.059" | 59 m || single || 2 days || 18 Apr 2004 || 21 || align=left | — || |- id="2004 HD" bgcolor=#FFC2E0 | 6 || 2004 HD || AMO || 24.8 || data-sort-value="0.039" | 39 m || single || 16 days || 02 May 2004 || 73 || align=left | — || |- id="2004 HE" bgcolor=#FFC2E0 | 6 || 2004 HE || APO || 26.8 || data-sort-value="0.016" | 16 m || single || 1 day || 17 Apr 2004 || 40 || align=left | — || |- id="2004 HL" bgcolor=#FFC2E0 | 6 || 2004 HL || APO || 26.5 || data-sort-value="0.018" | 18 m || single || 1 day || 17 Apr 2004 || 25 || align=left | AMO at MPC || |- id="2004 HM" bgcolor=#FFC2E0 | 0 || 2004 HM || APO || 23.18 || data-sort-value="0.082" | 82 m || multiple || 2004–2020 || 20 Oct 2020 || 132 || align=left | — || |- id="2004 HZ" bgcolor=#FFC2E0 | 3 || 2004 HZ || APO || 22.6 || data-sort-value="0.11" | 110 m || multiple || 2004–2007 || 22 Apr 2007 || 74 || align=left | — || |- id="2004 HA1" bgcolor=#FFC2E0 | 8 || || APO || 21.7 || data-sort-value="0.16" | 160 m || single || 6 days || 25 Apr 2004 || 65 || align=left | — || |- id="2004 HQ1" bgcolor=#FFC2E0 | 6 || || APO || 23.1 || data-sort-value="0.085" | 85 m || single || 30 days || 19 May 2004 || 64 || align=left | — || |- id="2004 HA2" bgcolor=#FA8072 | 0 || || MCA || 20.12 || data-sort-value="0.28" | 280 m || multiple || 2004-2023 || 10 Apr 2023 || 54 || align=left | — || |- id="2004 HD2" bgcolor=#FFC2E0 | 7 || || APO || 21.1 || data-sort-value="0.21" | 210 m || single || 20 days || 10 May 2004 || 53 || align=left | Potentially hazardous object || |- id="2004 HS3" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.0 || 1.1 km || multiple || 2004–2019 || 27 Oct 2019 || 36 || align=left | Alt.: 2008 CX147 || |- id="2004 HF12" bgcolor=#FFC2E0 | 7 || || APO || 20.5 || data-sort-value="0.28" | 280 m || single || 48 days || 07 Jun 2004 || 72 || align=left | Potentially hazardous object || |- id="2004 HG12" bgcolor=#FFC2E0 | 9 || || APO || 22.4 || data-sort-value="0.12" | 120 m || single || 14 days || 04 May 2004 || 53 || align=left | — || |- id="2004 HH20" bgcolor=#FFC2E0 | 8 || || AMO || 25.1 || data-sort-value="0.034" | 34 m || single || 9 days || 30 Apr 2004 || 44 || align=left | — || |- id="2004 HD22" bgcolor=#E9E9E9J | 1 || || MBA-M || 18.5 || data-sort-value="0.84" | 840 m || multiple || 2004–2017 || 19 Mar 2017 || 20 || align=left | — || |- id="2004 HY22" bgcolor=#fefefe | 0 || || MBA-I || 19.0 || data-sort-value="0.47" | 470 m || multiple || 2004–2019 || 21 Aug 2019 || 29 || align=left | — || |- id="2004 HD31" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.68 || data-sort-value="0.77" | 770 m || multiple || 2004–2021 || 31 May 2021 || 37 || align=left | Disc.: SpacewatchAdded on 17 June 2021 || |- id="2004 HC33" bgcolor=#FFC2E0 | 6 || || APO || 26.0 || data-sort-value="0.022" | 22 m || single || 4 days || 27 Apr 2004 || 33 || align=left | AMO at MPC || |- id="2004 HT38" bgcolor=#FFC2E0 | 7 || || AMO || 23.6 || data-sort-value="0.068" | 68 m || single || 6 days || 30 Apr 2004 || 38 || align=left | — || |- id="2004 HA39" bgcolor=#FFC2E0 | 1 || || APO || 20.96 || data-sort-value="0.23" | 230 m || multiple || 2004-2023 || 23 Oct 2023 || 90 || align=left | CSS || |- id="2004 HB39" bgcolor=#FFC2E0 | 5 || || AMO || 22.7 || data-sort-value="0.10" | 100 m || single || 91 days || 25 Jul 2004 || 46 || align=left | — || |- id="2004 HC39" bgcolor=#FFC2E0 | 2 || || APO || 21.5 || data-sort-value="0.18" | 180 m || single || 20 days || 12 May 2004 || 125 || align=left | Potentially hazardous object || |- id="2004 HZ52" bgcolor=#E9E9E9 | 0 || || MBA-M || 16.72 || 1.9 km || multiple || 2004–2021 || 01 Apr 2021 || 233 || align=left | — || |- id="2004 HW53" bgcolor=#FFC2E0 | 1 || || APO || 19.7 || data-sort-value="0.41" | 410 m || multiple || 2004–2019 || 26 Oct 2019 || 52 || align=left | — || |- id="2004 HX53" bgcolor=#FFC2E0 | 0 || || APO || 23.6 || data-sort-value="0.068" | 68 m || multiple || 2004–2017 || 04 Apr 2017 || 95 || align=left | — || |- id="2004 HR56" bgcolor=#FFC2E0