List of unnumbered minor planets: 2003 S (390–442)

This is a partial list of unnumbered minor planets for principal provisional designations assigned during 16–30 September 2003. Since this period yielded a high number of provisional discoveries, it is further split into several standalone pages. , a total of 149 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.

S

|- id="2003 SK390" bgcolor=#d6d6d6 | 3 || || MBA-O || 17.8 || 1.5 km || multiple || 2003–2019 || 07 Sep 2019 || 14 || align=left | Disc.: SDSSAdded on 17 January 2021 || |- id="2003 SS390" bgcolor=#fefefe | 0 || || MBA-I || 19.1 || data-sort-value="0.45" | 450 m || multiple || 2003–2020 || 14 Nov 2020 || 32 || align=left | Disc.: SDSS || |- id="2003 SX390" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.00 || 1.4 km || multiple || 2003–2021 || 29 Sep 2021 || 51 || align=left | Disc.: SDSS || |- id="2003 SD391" bgcolor=#FA8072 | 2 || || MCA || 20.2 || data-sort-value="0.27" | 270 m || multiple || 2003–2020 || 09 Oct 2020 || 23 || align=left | Disc.: SDSSAdded on 17 January 2021 || |- id="2003 SO391" bgcolor=#d6d6d6 | 1 || || MBA-O || 17.8 || 1.5 km || multiple || 2003–2019 || 05 Jul 2019 || 33 || align=left | Disc.: SDSSAlt.: 2014 WZ250 || |- id="2003 SR391" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.88 || 1.5 km || multiple || 2003–2021 || 04 Oct 2021 || 58 || align=left | Disc.: SDSSAlt.: 2005 EL111, 2005 EN333 || |- id="2003 SU392" bgcolor=#d6d6d6 | 3 || || MBA-O || 17.5 || 1.8 km || multiple || 2003–2019 || 02 Nov 2019 || 46 || align=left | Disc.: SDSSAlt.: 2014 WN473 || |- id="2003 SW392" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.59 || data-sort-value="0.80" | 800 m || multiple || 2003–2021 || 02 Dec 2021 || 40 || align=left | Disc.: SDSSAdded on 24 December 2021 || |- id="2003 SR393" bgcolor=#fefefe | 0 || || MBA-I || 19.0 || data-sort-value="0.47" | 470 m || multiple || 2003–2021 || 11 Jan 2021 || 67 || align=left | Disc.: SDSSAdded on 17 January 2021Alt.: 2020 SH22 || |- id="2003 ST393" bgcolor=#E9E9E9 | 0 || || MBA-M || 19.1 || data-sort-value="0.64" | 640 m || multiple || 2003–2020 || 20 Oct 2020 || 17 || align=left | Disc.: SDSSAdded on 17 June 2021 || |- id="2003 SU393" bgcolor=#d6d6d6 | 1 || || MBA-O || 17.9 || 1 km || multiple || 2003-2024 || 04 Dec 2024 2003 || 18 || align=left | Disc.: SDSSAlt.: 2024 WG73 || |- id="2003 SZ393" bgcolor=#fefefe | 1 || || MBA-I || 19.6 || data-sort-value="0.36" | 360 m || multiple || 2003–2020 || 15 May 2020 || 40 || align=left | Disc.: SDSSAlt.: 2010 TN135 || |- id="2003 SA394" bgcolor=#fefefe | 0 || || MBA-I || 19.3 || data-sort-value="0.41" | 410 m || multiple || 2003–2019 || 24 Aug 2019 || 27 || align=left | Disc.: SDSS || |- id="2003 SQ394" bgcolor=#fefefe | 0 || || MBA-I || 19.0 || data-sort-value="0.47" | 470 m || multiple || 2003–2020 || 06 Dec 2020 || 57 || align=left | Disc.: SDSS || |- id="2003 SR394" bgcolor=#fefefe | 2 || || MBA-I || 19.7 || data-sort-value="0.34" | 340 m || multiple || 2003–2017 || 24 Nov 2017 || 18 || align=left | Disc.: SDSS || |- id="2003 SV394" bgcolor=#fefefe | 1 || || MBA-I || 18.5 || data-sort-value="0.59" | 590 m || multiple || 2003–2020 || 29 Jun 2020 || 33 || align=left | Disc.: SDSS || |- id="2003 SA396" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.58 || data-sort-value="0.80" | 800 m || multiple || 2003-2016 || 27 Oct 2016 || 26 || align=left | Disc.: SDSSAdded on 29 January 2022 || |- id="2003 SC396" bgcolor=#E9E9E9 | – || || MBA-M || 19.9 || data-sort-value="0.31" | 310 m || single || 2 days || 28 Sep 2003 || 6 || align=left | Disc.: SDSS || |- id="2003 SK396" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.52 || 1.1 km || multiple || 2003–2021 || 12 Nov 2021 || 46 || align=left | Disc.: SDSS || |- id="2003 SV396" bgcolor=#fefefe | 0 || || MBA-I || 18.76 || data-sort-value="0.53" | 530 m || multiple || 2003–2021 || 19 Nov 2021 || 62 || align=left | Disc.: SDSSAlt.: 2019 AA36 || |- id="2003 SC397" bgcolor=#fefefe | 2 || || MBA-I || 19.8 || data-sort-value="0.28" | 340 m || multiple || 2003-2025 || 20 Jan 2025 || 21 || align=left | Disc.: SDSS || |- id="2003 SG397" bgcolor=#E9E9E9 | 2 || || MBA-M || 19.3 || data-sort-value="0.58" | 580 m || multiple || 2003–2016 || 27 Oct 2016 || 15 || align=left | Disc.: SDSSAdded on 29 January 2022 || |- id="2003 SH397" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.1 || data-sort-value="0.71" | 710 m || multiple || 2003–2015 || 16 Oct 2015 || 42 || align=left | Disc.: SDSSAlt.: 2015 PW20 || |- id="2003 SL397" bgcolor=#fefefe | 1 || || MBA-I || 19.5 || data-sort-value="0.37" | 370 m || multiple || 2003–2021 || 13 Nov 2021 || 14 || align=left | Disc.: SDSS || |- id="2003 SP397" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.26 || 1.2 km || multiple || 2003–2021 || 08 Aug 2021 || 53 || align=left | Disc.: SDSSAlt.: 2017 OJ67 || |- id="2003 SV397" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.59 || 1.7 km || multiple || 2003–2021 || 06 Nov 2021 || 80 || align=left | Disc.: SDSSAdded on 17 January 2021Alt.: 2017 VW43 || |- id="2003 SX397" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.3 || data-sort-value="0.65" | 650 m || multiple || 2003–2019 || 04 Oct 2019 || 39 || align=left | Disc.: SDSS || |- id="2003 SL398" bgcolor=#d6d6d6 | 1 || || HIL || 16.0 || 3.5 km || multiple || 2003–2019 || 20 Dec 2019 || 68 || align=left | Disc.: SDSS || |- id="2003 SS398" bgcolor=#fefefe | 2 || || MBA-I || 19.5 || data-sort-value="0.37" | 370 m || multiple || 2003–2016 || 30 Sep 2016 || 19 || align=left | Disc.: SDSS || |- id="2003 SG399" bgcolor=#d6d6d6 | 2 || || MBA-O || 17.9 || 1.5 km || multiple || 2003–2019 || 26 Sep 2019 || 18 || align=left | Disc.: SDSS || |- id="2003 SU399" bgcolor=#fefefe | 3 || || MBA-I || 19.14 || data-sort-value="0.36" | 360 m || multiple || 2003-2022 || 21 Sep 2022 || 31 || align=left | Disc.: SDSS || |- id="2003 SB401" bgcolor=#fefefe | 0 || || MBA-I || 18.7 || data-sort-value="0.54" | 540 m || multiple || 2003–2018 || 06 Oct 2018 || 38 || align=left | Disc.: SDSS || |- id="2003 SR401" bgcolor=#E9E9E9 | 0 || || MBA-M || 17.9 || 1.1 km || multiple || 2003–2020 || 20 Nov 2020 || 43 || align=left | Disc.: SDSS || |- id="2003 SA402" bgcolor=#E9E9E9 | 2 || || MBA-M || 17.9 || 1.5 km || multiple || 2003–2017 || 11 Dec 2017 || 54 || align=left | Disc.: SDSSAlt.: 2017 UD50 || |- id="2003 SP402" bgcolor=#E9E9E9 | 2 || || MBA-M || 18.0 || 1.4 km || multiple || 2003–2017 || 23 Oct 2017 || 20 || align=left | Disc.: Spacewatch || |- id="2003 SU402" bgcolor=#d6d6d6 | 2 || || MBA-O || 17.66 || 1.1 km || multiple || 2003-2024 || 28 Nov 2024 || 31 || align=left | Disc.: Spacewatch || |- id="2003 SC403" bgcolor=#E9E9E9 | 1 || || MBA-M || 18.5 || data-sort-value="0.84" | 840 m || multiple || 2003–2020 || 11 Oct 2020 || 44 || align=left | Disc.: Spacewatch || |- id="2003 SD403" bgcolor=#fefefe | 0 || = (887236) || MBA-I || 19.26 || data-sort-value="0.42" | 420 m || multiple || 2003–2021 || 07 Sep 2021 || 43 || align=left | Disc.: Spacewatch || |- id="2003 SK404" bgcolor=#fefefe | 0 || || MBA-I || 18.7 || data-sort-value="0.54" | 540 m || multiple || 2003–2017 || 18 Sep 2017 || 22 || align=left | Disc.: SDSSAdded on 22 July 2020Alt.: 2017 SY8 || |- id="2003 SN404" bgcolor=#fefefe | 0 || || MBA-I || 19.3 || data-sort-value="0.41" | 410 m || multiple || 2003–2020 || 11 Aug 2020 || 27 || align=left | Disc.: SDSSAlt.: 2020 MC19 || |- id="2003 SY404" bgcolor=#fefefe | 1 || || MBA-I || 19.1 || data-sort-value="0.45" | 450 m || multiple || 2003–2016 || 25 Sep 2016 || 32 || align=left | Disc.: SDSSAdded on 21 August 2021 || |- id="2003 SC405" bgcolor=#d6d6d6 | 0 || || MBA-O || 16.92 || 2.2 km || multiple || 2003-2022 || 05 Feb 2022 || 39 || align=left | Disc.: SDSS || |- id="2003 SS405" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.8 || data-sort-value="0.73" | 730 m || multiple || 2003–2020 || 09 Oct 2020 || 29 || align=left | Disc.: SDSSAdded on 17 January 2021 || |- id="2003 SW405" bgcolor=#E9E9E9 | 1 || || MBA-M || 20.05 || data-sort-value="0.42" | 420 m || multiple || 2003-2024 || 07 Oct 2024 || 26 || align=left | Disc.: SDSS || |- id="2003 ST406" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.7 || 1.6 km || multiple || 2003–2020 || 08 Dec 2020 || 38 || align=left | Disc.: SDSS || |- id="2003 SC408" bgcolor=#E9E9E9 | 2 || || MBA-M || 17.74 || 1.4 km || multiple || 2003-2022 days || 21 Sep 2022 || 36 || align=left | Disc.: SDSS || |- id="2003 SN408" bgcolor=#FA8072 | 0 || || MCA || 19.86 || data-sort-value="0.32" | 320 m || multiple || 2003–2020 || 17 Nov 2020 || 39 || align=left | Disc.: Spacewatch || |- id="2003 SU408" bgcolor=#fefefe | 0 || || MBA-I || 18.60 || data-sort-value="0.57" | 570 m || multiple || 2003–2021 || 08 Sep 2021 || 38 || align=left | Disc.: SDSSAlt.: 2014 QT417 || |- id="2003 SZ408" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.5 || 1.8 km || multiple || 2003–2020 || 12 Dec 2020 || 52 || align=left | Disc.: SDSSAlt.: 2014 SM342 || |- id="2003 SB409" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.7 || data-sort-value="0.76" | 760 m || multiple || 2003–2020 || 22 Sep 2020 || 25 || align=left | Disc.: SDSSAdded on 17 January 2021 || |- id="2003 SC409" bgcolor=#fefefe | 2 || || MBA-I || 19.5 || data-sort-value="0.37" | 370 m || multiple || 2003–2014 || 15 Sep 2014 || 18 || align=left | Disc.: SDSSAlt.: 2014 QW13 || |- id="2003 SD409" bgcolor=#FA8072 | 0 || || MCA || 18.0 || data-sort-value="0.75" | 750 m || multiple || 2003–2017 || 16 Apr 2017 || 37 || align=left | Disc.: LPL/Spacewatch IIAlt.: 2017 FF25 || |- id="2003 SJ409" bgcolor=#fefefe | 4 || || MBA-I || 19.2 || data-sort-value="0.43" | 430 m || multiple || 2003–2014 || 01 Oct 2014 || 16 || align=left | Disc.: SDSSAdded on 5 November 2021Alt.: 2014 SC86 || |- id="2003 SK409" bgcolor=#fefefe | 0 || || MBA-I || 19.36 || data-sort-value="0.40" | 400 m || multiple || 2003–2021 || 08 Sep 2021 || 40 || align=left | Disc.: SDSS || |- id="2003 SL409" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.8 || 1.5 km || multiple || 2003–2020 || 13 Sep 2020 || 20 || align=left | Disc.: LPL/Spacewatch IIAdded on 17 June 2021 || |- id="2003 SQ409" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.26 || 1.2 km || multiple || 2003–2021 || 29 Aug 2021 || 33 || align=left | Disc.: SDSS || |- id="2003 SR409" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.8 || 1.5 km || multiple || 2003–2020 || 22 Oct 2020 || 28 || align=left | Disc.: SDSS || |- id="2003 ST409" bgcolor=#E9E9E9 | – || || MBA-M || 19.1 || data-sort-value="0.84" | 840 m || single || 13 days || 29 Sep 2003 || 7 || align=left | Disc.: SDSS || |- id="2003 SW409" bgcolor=#E9E9E9 | 0 || || MBA-M || 18.70 || 1.0 km || multiple || 1994–2021 || 31 Oct 2021 || 69 || align=left | Disc.: LPL/Spacewatch IIAlt.: 2012 SJ72 || |- id="2003 SC410" bgcolor=#d6d6d6 | 3 || || MBA-O || 18.1 || 1.3 km || multiple || 2003–2019 || 25 Sep 2019 || 41 || align=left | Disc.: LPL/Spacewatch II || |- id="2003 SJ410" bgcolor=#fefefe | 0 || || MBA-I || 19.6 || data-sort-value="0.36" | 360 m || multiple || 2003–2021 || 30 Nov 2021 || 23 || align=left | Disc.: LPL/Spacewatch IIAdded on 24 December 2021 || |- id="2003 SZ410" bgcolor=#fefefe | 0 || || MBA-I || 18.7 || data-sort-value="0.54" | 540 m || multiple || 2003–2016 || 28 Feb 2016 || 25 || align=left | Disc.: SDSSAlt.: 2007 UC118 || |- id="2003 SQ411" bgcolor=#fefefe | – || || MBA-I || 19.4 || data-sort-value="0.39" | 390 m || single || 2 days || 29 Sep 2003 || 7 || align=left | Disc.: SDSS || |- id="2003 SR411" bgcolor=#fefefe | 1 || || MBA-I || 19.36 || data-sort-value="0.40" | 400 m || multiple || 2003–2021 || 13 Jul 2021 || 46 || align=left | Disc.: SDSSAlt.: 2014 SU332 || |- id="2003 SX411" bgcolor=#d6d6d6 | 0 || || MBA-O || 17.1 || 2.1 km || multiple || 2003–2018 || 18 Mar 2018 || 36 || align=left | Disc.: SDSSAlt.: 2014 SH102 || |- id="2003 SG412" bgcolor=#fefefe