{{Short description|Near-Earth asteroid discovered in 2023}} __NOTOC__ {{Use dmy dates|date=March 2023}} {{Infobox planet | minorplanet = yes | background = #FFC2E0 | name = 2023 DW | discovery_ref = <ref name="MPEC2023-D71"/><ref name="Maury"/> | discoverer = [[Georges Attard]] and [[Alain Maury]] | discovery_site = [[San Pedro de Atacama]] | discovered = 26 February 2023 | mpc_name = 2023 DW | alt_names = 3BP2721<ref name="Maury"/> | mp_category = {{Hlist | [[Near-Earth object|NEO]] | [[Aten asteroid|Aten]] }} | orbit_ref = <ref name="jpldata"/> | epoch = 2025-Nov-21 ([[Julian day|JD]] 2461000.5) | uncertainty = 1 | observation_arc = 1118 days | moid = {{Convert|0.00034|AU|e3km|abbr=unit}} | venus_moid = {{Convert|0.03|AU|e6km|abbr=unit}}<ref name="MPC-object"/> | jupiter_moid = {{Convert|4.31|AU|e6km|abbr=unit}} | aphelion = {{val|1.1450|ul=AU}} (Q) | perihelion = {{val|0.4952|u=AU}} (q) | time_periastron = 2022-Nov-26 | semimajor = {{val|0.8201|u=AU}} (a) | eccentricity = {{val|0.3962}} (e) | period = {{val|0.743|u=years}} (271 days) | inclination = {{val|5.806|u=°}} (i) | asc_node = {{val|326.09|u=°}} (Ω) | mean_anomaly = {{val|7.3|ul=°}} (M) | arg_peri = {{val|40.47|u=°}} (ω) | mean_diameter = {{Ubl | ≈{{convert|47|m|sigfig=2|abbr=on}}<ref name=Sentry20/> | 37–82 meters{{efn|name=Tunguska}} }} | abs_magnitude = 24.3 {{small|(MPC)}}<ref name="MPC-object"/> }}
'''2023 DW''' is a [[near-Earth object|near-Earth asteroid]] of the [[Aten asteroid|Aten group]]. It is approximately {{convert|50|m|ft|abbr=off|sp=us}} in diameter, roughly the size of the [[asteroid]] that caused the [[Tunguska event]],{{efn|name=Tunguska}} and was discovered by [[Georges Attard]] and [[Alain Maury]], from the MAP (Maury/Attard/Parrott) asteroid search program in [[San Pedro de Atacama]] on 26 February 2023, when it was {{Convert|0.07|AU|e6km|abbr=unit|lk=on}} from Earth.<ref name="MPEC2023-D71"/> On 28 February 2023, with an [[observation arc]] of 1.2 days, it was rated 1 on the [[Torino scale]] for a virtual impactor on 14 February 2046 at 21:36 [[Coordinated Universal Time|UTC]].<ref name=Sentry1/> The [[Curve fitting|nominal]] approach is expected to occur about eight hours before the impact scenario at 14 February 2046 13:15 ± 72 minutes.<ref name="jpldata"/> Between 5–8 March, the asteroid was not observed as it was within 40 degrees of the [[Lunar phase#waxinggibbous|waxing gibbous moon]].<ref name=moon/> On 14 March 2023 the [[European Space Agency]] was the first to drop to a Torino scale rating of 0.<ref name=esa-risk20230314/> [[Sentry (monitoring system)|Sentry]] dropped to a Torino scale rating of 0 on 16 March 2023.<ref name=Sentry17B/> It was completely removed from both risk tables on 20 March 2023.<ref name=removed/>
2023 DW currently orbits the [[Sun]] once every 271 days.<ref name="jpldata"/> It came to [[perihelion]] (closest approach to the Sun) on 26 November 2022, and then approached Earth from the direction of the Sun making closest Earth approach on 18 February 2023 at distance of about 8.7 million km.<ref name=jpldata/>
==Risk== With an observation arc of 13 days it peaked at a [[Palermo scale]] rating of –1.89<ref name=Sentry13B/> with the odds of impact then being about 78 times less than the background hazard level.{{efn|name=background}} It was removed from the risk table on 20 March 2023.
{| class="wikitable sortable" style="text-align:center; font-size: 0.9em;" |+2023 DW [[Curve fitting|nominal]] approach for 14 February 2046 21:36 virtual impactor ! Solution ! [[Observation arc|Observation<br/>arc]]<br/>(in days) ! [[JPL Horizons]]<br />[[Curve fitting|nominal]] geocentric<br />distance ([[astronomical unit|AU]]) ! uncertainty<br />region<br />([[3-sigma]]) ! Impact<br />probability ! [[Torino scale|Torino<br/>scale]] ! [[Palermo scale|Palermo<br/>scale]]<br/>(max) |- |JPL #2 [https://web.archive.org/web/20230228220807/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Feb-28)] || 2 (38 obs) || {{Convert|0.0165|AU|e6km|abbr=unit|lk=on}} || {{Nowrap|± 21 million km}} || 1:830<ref name=Sentry2/> || 1 || –2.28 |- |JPL #5 [https://web.archive.org/web/20230303145534/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-03)] || 4 (55 obs) || {{Convert|0.0181|AU|e6km|abbr=unit}} || {{Nowrap|± 18 million km}} || 1:710<ref name=Sentry4/> || 1 || –2.21 |- |JPL #6 [https://web.archive.org/web/20230304160813/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-04)] || 6 (60 obs) || {{Convert|0.0095|AU|e6km|abbr=unit}} || {{Nowrap|± 13 million km}} || 1:543 || 1 || –2.11 |- |JPL #7 [https://web.archive.org/web/20230305154348/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-05)] || 6 (62 obs) || {{Convert|0.0124|AU|e6km|abbr=unit}} || {{Nowrap|± 13 million km}} || 1:613<ref name=esa-risk20230305/> || 1 || –2.16 |- |JPL #8 [https://web.archive.org/web/20230306215145/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-06)] || 6 (62 obs) || {{Convert|0.0123|AU|e6km|abbr=unit}} || {{Nowrap|± 13 million km}} || 1:560<ref name=Sentry6/> || 1 || –2.12 |- |JPL #9 [https://web.archive.org/web/20230311143358/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-11)] || 13 (69 obs) || {{Convert|0.0121|AU|e6km|abbr=unit}} || {{Nowrap|± 8 million km}} || 1:420<ref name=Sentry13/> || 1 || –1.98 |- |JPL #10 [https://web.archive.org/web/20230312143729/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-12)] || 13 (77 obs) || {{Convert|0.0097|AU|e6km|abbr=unit}} || {{Nowrap|± 7 million km}} || 1:360<ref name=Sentry13B/> || 1 || –1.89 |- |JPL #11 [https://web.archive.org/web/20230313143752/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-13)] || 15 (91 obs) || {{Convert|0.0186|AU|e6km|abbr=unit}} || {{Nowrap|± 7 million km}} || 1:670<ref name=Sentry15/> || 1 || –2.18 |- |JPL #12 [https://web.archive.org/web/20230314143123/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-14)] || 16 (99 obs) || {{Convert|0.0192|AU|e6km|abbr=unit}} || {{Nowrap|± 7 million km}} || 1:770<ref name=Sentry16/> || 1 || –2.23 |- |JPL #13 [https://web.archive.org/web/20230315145320/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-15)] || 17 (104 obs) || {{Convert|0.0198|AU|e6km|abbr=unit}} || {{Nowrap|± 6 million km}} || 1:1000<ref name=Sentry17/> || 1 || –2.34 |- |JPL #14 [https://web.archive.org/web/20230316154345/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-16)] || 17 (112 obs) || {{Convert|0.0216|AU|e6km|abbr=unit}} || {{Nowrap|± 5 million km}} || 1:3600<ref name=Sentry17B/> || 0 || –2.90 |- |JPL #15 [https://web.archive.org/web/20230317160912/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-17)] || 18 (115 obs) || {{Convert|0.0214|AU|e6km|abbr=unit}} || {{Nowrap|± 5 million km}} || 1:3400<ref name=Sentry18/> || 0 || –2.88 |- |JPL #16 [https://web.archive.org/web/20230319144751/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-19)] || 20 (118 obs) || {{Convert|0.0303|AU|e6km|abbr=unit}} || {{Nowrap|± 4 million km}} || N/A<ref name=Sentry20/>{{efn|name=3sigma}} || N/A || N/A |- |JPL #17 [https://web.archive.org/web/20230320145748/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 (2023-Mar-20)] || 21 (123 obs) || {{Convert|0.0317|AU|e6km|abbr=unit}} || {{Nowrap|± 3 million km}} || N/A<ref name=removed/> || N/A || N/A |}
{| class="wikitable" style="text-align:center; font-size: 0.9em;" |+2023 DW Earth approach on 14 February 2046<br/>(about 8 hours before the impact scenario) ! Date & time ! [[Curve fitting|Nominal]] distance |- |2046-Feb-14 13:15 ± 72 minutes || {{val|4730116|u=km}}<ref name=jpldata/> |}
=== Risk corridor === Risk corridor as it was known on 3 March 2023 with a 4-day observation arc and 55 observations. The asteroid would have most likely impacted the [[Pacific Ocean]]. At the time of the potential impactor, the asteroid is most likely to miss Earth by about 4.7 million km and has a [[3-sigma]] uncertainty region of {{Nowrap|± 3 million km}}.<ref name=Horizons2023DW/> As the uncertainty region gets smaller the probability of impact can increase and then suddenly drop to 0.
<gallery widths="200" heights="160"> File:2023 DW find orb-2023-03-03---map 1.jpg|Risk corridor over [[Indonesia]] and the Pacific Ocean File:2023 DW find orb-2023-03-03---map 2.jpg|Risk corridor over the Pacific Ocean and [[Hawaii]] File:2023_DW_find_orb-2023-03-03---map_3.jpg|Risk corridor over [[Mexico]] and the [[United States]] File:Apophis ellipse.svg|Diagram showing why as the uncertainty region gets smaller the probability of impact can increase and then suddenly drop to 0. {{disputed|talkpage=Talk:Torino scale#Normal distribution|date=February 2025}} </gallery>
== Notes == {{notelist|refs=
{{efn|name=background|"Background risk" is defined as the average risk posed by objects of the same size or larger over the years until the date of the potential impact. A [[Palermo Technical Impact Hazard Scale|Palermo scale]] rating of 0 would be equal to the background risk.}}
{{efn|name=Tunguska|The [[Tunguska event|Tunguska asteroid]] is estimated to have been a common stony asteroid about 50–60 meters in diameter and similar in size to 2023 DW. The [[Chelyabinsk meteor]] was only about 18 meters in diameter. [[Meteor Crater]] was created by a relatively rare [[Iron meteorite#Occurrence|(only 5% of the population) iron-nickel meteor]] about 50 meters in diameter.}}
{{efn|name=3sigma|The risk of impact dropped significantly as the [[3-sigma]] uncertainty region became smaller than the [[Curve fitting|nominal]] approach distance.}}
}} <!-- end of notelist -->
== References == {{Reflist|refs=
<ref name="MPEC2023-D71">{{cite web |title=MPEC 2023-D71 : 2023 DW |publisher=IAU Minor Planet Center |date=2023-02-27 |url=https://www.minorplanetcenter.net/mpec/K23/K23D71.html |accessdate=2023-03-05}} (K23D00W)</ref>
<ref name=removed>{{cite web |title=Sentry (Removed Objects) |publisher=NASA/JPL Near-Earth Object Program Office |url=https://cneos.jpl.nasa.gov/sentry/removed.html |archive-url=https://archive.today/20230321203827/https://cneos.jpl.nasa.gov/sentry/removed.html |archive-date=2023-03-21 |url-status=live }}</ref>
<ref name=Sentry1>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (1.2 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230228015524/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-02-28 }}</ref>
<ref name=Sentry2>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (2.0 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230228210816/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-02-28 }}</ref>
<ref name=Sentry4>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (3.9 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230303174422/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-03 }}</ref>
<ref name=Sentry6>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (6.8 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230306214903/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-06 }}</ref>
<ref name=Sentry13>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (13.1 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230311170828/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-11 }}</ref>
<ref name=Sentry13B>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (13.8 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230312170201/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-12 }}</ref>
<ref name=Sentry15>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (15.0 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230313154710/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-13 }}</ref>
<ref name=Sentry16>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (16.0 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230314154902/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-14 }}</ref>
<ref name=Sentry17>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (16.9 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230315154311/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-15 }}</ref>
<ref name=Sentry17B>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (17.7 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230316171038/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-16 }}</ref>
<ref name=Sentry18>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (17.9 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230316171038/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-16 }}</ref>
<ref name=Sentry20>{{cite web |title=Archive of Sentry Risk Table: 2023 DW (20.3 day arc) |publisher=NASA JPL [[Center for Near-Earth Object Studies|CNEOS]] |url=https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |archive-url=https://archive.today/20230319145130/https://cneos.jpl.nasa.gov/sentry/details.html%23?des=2023%20DW |url-status=dead |archive-date=2023-03-19 }}</ref>
<ref name=esa-risk20230305>{{cite web |title=Archive (05 March 2023): ESA Risk List |publisher=[[European Space Agency]] near-earth objects coordination centre |url=https://neo.ssa.esa.int/risk-list |archive-url=https://web.archive.org/web/20230305210103/https://neo.ssa.esa.int/risk-list |archive-date=5 March 2023 }}</ref>
<ref name=esa-risk20230314>{{cite web |title=Archive (14 March 2023): ESA Risk List |publisher=[[European Space Agency]] near-earth objects coordination centre |url=https://neo.ssa.esa.int/risk-list |archive-url=https://web.archive.org/web/20230314044240/https://neo.ssa.esa.int/risk-list |archive-date=14 March 2023 }}</ref>
<ref name=moon>{{cite web |title=JPL Horizons: 2023 DW Target-Observer-Moon (lunar elongation) for 4–10 March 2023 |publisher=JPL Horizons |url=https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272023-03-04%27&STOP_TIME=%272023-03-10%27&STEP_SIZE=%271%20day%27&QUANTITIES=%279,25%27 }}</ref>
<ref name=jpldata>{{cite web |title=JPL Small-Body Database Browser: (2023 DW) |url=https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2023%20DW&view=OPC |publisher=[[Jet Propulsion Laboratory]] |accessdate=2023-03-20}}</ref>
<ref name="MPC-object">{{cite web |title=2023 DW Orbit |work=Minor Planet Center |url=https://www.minorplanetcenter.net/db_search/show_object?object_id=2023+DW |accessdate=2023-03-05}}</ref>
<ref name=Horizons2023DW>{{cite web |title=JPL Horizons: 2023 DW geocentric distance and uncertainty on 14 February 2046 |publisher=JPL Horizons |url=https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 |archive-url=https://web.archive.org/web/20230304160813/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272023+DW%27&START_TIME=%272046-02-14%2021:36%27&STOP_TIME=%272046-02-15%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 |archive-date=2023-03-04 |url-status=live |accessdate=2023-03-20}}</ref>
<ref name="Maury">{{cite web |title=2023 DW |work=Alain Maury's Blog |url=https://www.spaceobs.com/en/Alain-Maury-s-Blog/2023-DW |accessdate=2023-03-11}}</ref>
}} <!-- end of reflist-->
== External links == * {{NeoDys|2023DW}} * {{ESA-SSA|2023DW}} * {{JPL small body|id=54342500}} * LOV (uncertainty region): [https://twitter.com/ptastro1/status/1632355512603009026 5000 clones calculated in SOLEX 12.1. Based on 60 observations through March 4] / [https://twitter.com/ptastro1/status/1634756097730027525 5000 clones, SOLEX 12.1, 69 observations through March 11] / [https://twitter.com/ptastro1/status/1636334615123357698 5000 clones, SOLEX 12.1, 104 observations through March 15] (ptastro1) * Risk Corridor Calculations: [https://twitter.com/Piero_Sicoli/status/1631229473570914304 Piero_Sicoli] and [https://twitter.com/StevearenoBR/status/1631886371823534080 StevearenoBR] * Discovery circumstances: [http://www.spaceobs.com/fr/Blog-de-Alain-Maury/2023-DW Alain Maury's blog]
{{2023 in space}} {{Small Solar System bodies}} {{Portal bar|Astronomy|Outer Space}} {{Authority control}}
{{DEFAULTSORT:2023 DW}} [[Category:Aten asteroids|#]] [[Category:Minor planet object articles (unnumbered)]] [[Category:Near-Earth objects removed from the Sentry Risk Table]] [[Category:Near-Earth objects in 2023|20230218]] [[Category:Astronomical objects discovered in 2023|20230226]]