2014 DX110

{{Short description|Sub-kilometer asteroid}} {{DISPLAYTITLE:{{mp|2014 DX|110}}}} {{Use dmy dates|date=February 2018}} {{Infobox planet | minorplanet = yes | background = #FFC2E0 | name = {{mp|2014 DX|110}} | discovery_ref = <ref name="MPEC2014-E22"/> | discoverer = [[Pan-STARRS]] ([[List of observatory codes#F51|F51]]) | discovered = 28 February 2014 | mpc_name = {{mp|2014 DX|110}} | mp_category = {{Hlist | [[Apollo asteroid|Apollo]] | [[Near-Earth object|NEO]]<ref name="jpldata"/> }} | orbit_ref = <ref name="jpldata"/> | epoch = 13 January 2016 ([[Julian day|JD]] 2457400.5) | aphelion = {{Convert|3.5778|AU|Gm|abbr=on|lk=on}} (Q) | perihelion = {{Convert|0.82623|AU|Gm|abbr=on}} (q) | semimajor = {{Convert|2.2020|AU|Gm|abbr=on}} (a) | eccentricity = 0.62479 (e) | period = 3.27 [[Julian year (astronomy)|yr]] (1193.5 [[Julian year (astronomy)|d]]) | inclination = 5.7362° (i) | asc_node = 163.83° (Ω) | mean_anomaly = 193.14[[Degree (angle)|°]] (M) | arg_peri = 56.517° (ω) | dimensions = {{Ubl | ~{{convert|23|m|sp=us}}<ref name=summary/> | {{convert|20|-|40|m|ft|abbr=on}}<ref name=ca/> }} | mass = {{Val|1.6e7|u=kg}} (assumed)<ref name=summary/> | magnitude = 15–32 | abs_magnitude = 25.7<ref name="jpldata"/> | mean_motion = {{Deg2DMS|0.30162|sup=ms}} / day (n) | rotation = {{Convert|0.12041|h|min|abbr=on|lk=on}} | uncertainty = 6 | moid = {{Convert|0.00157599|AU|km|abbr=on}} }} '''{{mp|2014 DX|110}}''' is a sub-kilometer [[asteroid]], classified as a [[near-Earth object]] of the [[Apollo asteroids|Apollo group]], approximately 30 meters in diameter. It passed less than 1 [[Lunar distance (astronomy)|lunar distance]] from Earth on 5 March 2014.<ref name=jpl-close/> With an [[Absolute magnitude#Solar System bodies (H)|absolute magnitude]] of 25.7, this asteroid is potentially the largest asteroid to come [[List of asteroid close approaches to Earth in 2013|inside the orbit of the Moon]] since {{mpl|2013 PJ|10}} on 4 August 2013. The close approach was webcast live by [[Slooh]] and Virtual Telescope.<ref name="jpldata" /><ref name="Fox" /><ref name="WRD-20140305" />

== Description == [[File:2014DX110-pia17955-640.jpg|thumb|left|Orbital diagram: close approach of {{mp|2014 DX|110}} on 5 March 2014]]

{{mp|2014 DX|110}} came to [[Opposition (planets)|opposition]] (furthest [[Elongation (astronomy)|elongation]] in the sky from the Sun) on 15 February 2014, but the asteroid had a very faint [[apparent magnitude]] of about 23 and was only 10 degrees from the [[full moon]].<ref name="NEODyS2014"/> The asteroid was discovered on 28 February 2014 by [[Pan-STARRS]] at an apparent magnitude of 20 using a {{convert |1.8 |m |in |adj=on |sp=us}} [[Ritchey–Chrétien telescope]].<ref name="MPEC2014-E22"/>

On 5 March 2014 at 21:00 [[Universal Time|UT]] the asteroid passed {{convert |0.00232 |AU |km mi |abbr=on |lk=on}} from Earth<ref name=jpl-close/> and reached about apparent magnitude 15.<ref name="NEODyS2014"/><ref name="Remanzacco"/> At 22:22 UT it passed {{convert |0.00249 |AU |km mi |abbr=on |lk=off}} from the Moon.<ref name=jpl-close/> By 6 March 2014 18:00 UT, the asteroid was less than 30 degrees from the Sun and dimming significantly.<ref name="NEODyS2014"/>

It has an observation arc of 5 days with an [[Uncertainty Parameter U|uncertainty parameter]] of 6.<ref name=jpldata/> It was removed from the JPL [[Sentry (monitoring system)|Sentry Risk Table]] on 5 March 2014 using JPL solution 3 with an observation arc of 5 days.<ref name="removed"/> When the asteroid only had an observation arc of 4 days, virtual clones of the asteroid that fit the uncertainty region in the known trajectory showed a 1 in 10 million chance that the asteroid could [[Impact event|impact]] Earth on 4 March 2046.<ref name="summary"/> With a 2046 [[Palermo Technical Scale]] of −7.11,<ref name=summary/> the odds of impact by {{mp|2014 DX|110}} in 2046 were about 13 million times less<ref name=math/> than the background hazard level of Earth impacts which 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.<ref name="palermo"/> Using the [[Curve fitting|nominal]] orbit, [[NEODyS]] shows that the asteroid will be {{convert |2.8 |AU |km mi |abbr=on |lk=off}} from Earth on 4 March 2046.<ref name="NEODyS2046"/>

== References == <references>

<ref name=jpldata>{{cite web |type=last observation: 5 March 2014; [[Observation arc|arc]]: 5 days |title=JPL Small-Body Database Browser: (2014 DX110) |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014DX110 |publisher=[[Jet Propulsion Laboratory]] |accessdate=4 April 2016}}</ref>

<ref name="MPEC2014-E22">{{cite web |title=MPEC 2014-E22 : 2014 DX110 |publisher=[[IAU Minor Planet Center]] |date=2 March 2014 |url=http://www.minorplanetcenter.net/mpec/K14/K14E22.html |accessdate=4 March 2014}} (K14DB0X)</ref>

<ref name=jpl-close>{{cite web |type=last observation: 5 March 2014; [[Observation arc|arc]]: 5 days |title=JPL Close-Approach Data: (2014 DX110) |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014DX110;cad=1#cad |accessdate=5 March 2014}}</ref>

<ref name="NEODyS2014">{{cite web |title=2014DX110 Ephemerides for 15 February 2014 through 10 March 2014 |publisher=[[NEODyS]] (Near Earth Objects{{Snd}} Dynamic Site) |url=http://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2014DX110&oc=500&y0=2014&m0=2&d0=15&h0=0&mi0=0&y1=2014&m1=3&d1=10&h1=0&mi1=0&ti=6.0&tiu=hours |accessdate=4 March 2014}}</ref>

<ref name=summary>{{cite web|title=Earth Impact Risk Summary: 2014 DX110 |publisher=Wayback Machine: NASA/JPL Near-Earth Object Program Office |url=http://neo.jpl.nasa.gov/risk/2014dx110.html |accessdate=4 March 2014 |url-status=dead |archiveurl=https://web.archive.org/web/20140305155208/http://neo.jpl.nasa.gov/risk/2014dx110.html |archivedate=March 5, 2014 }}</ref>

<ref name="palermo">{{cite web |date=31 August 2005 |title=The Palermo Technical Impact Hazard Scale |publisher=NASA/JPL Near-Earth Object Program Office |url=http://neo.jpl.nasa.gov/risk/doc/palermo.html |archive-url=https://web.archive.org/web/20020321092747/http://neo.jpl.nasa.gov/risk/doc/palermo.html |url-status=dead |archive-date=21 March 2002 |accessdate=4 March 2014}}</ref>

<ref name="removed">{{cite web |title=Date/Time Removed |publisher=NASA/JPL Near-Earth Object Program Office |url=http://neo.jpl.nasa.gov/risk/removed.html |archive-url=https://web.archive.org/web/20020602101400/http://neo.jpl.nasa.gov/risk/removed.html |url-status=dead |archive-date=2 June 2002 |accessdate=5 March 2014}}</ref>

<ref name=ca>{{cite web |title=NEO Earth Close Approaches |publisher=NASA/JPL Near-Earth Object Program Office |url=http://neo.jpl.nasa.gov/ca/ |accessdate=4 March 2014 |url-status=dead |archiveurl=https://web.archive.org/web/20140307125729/http://neo.jpl.nasa.gov/ca/ |archivedate=7 March 2014 }}</ref>

<ref name="Remanzacco">{{cite web |title=Close Approach of Asteroid 2014 DX110 |publisher=[[Associazione Friulana di Astronomia e Meteorologia]] |first1=Ernesto |last1=Guido |first2=Nick |last2=Howes |first3=Martino |last3=Nicolini |date=5 March 2014 |url=http://remanzacco.blogspot.it/2014/03/close-approach-of-asteroid-2014-dx110.html |accessdate=5 March 2014}}</ref>

<ref name="NEODyS2046">{{cite web |title=2014DX110 Ephemerides for 2 March 2046 through 6 March 2046 |publisher=[[NEODyS]] (Near Earth Objects{{Snd}} Dynamic Site) |url=http://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2014DX110&oc=500&y0=2046&m0=3&d0=2&h0=0&mi0=0&y1=2046&m1=3&d1=6&h1=0&mi1=0&ti=1.0&tiu=days |accessdate=4 March 2014}}</ref>

<ref name="Fox">{{cite web |date=4 March 2014 |title=Very close encounter: Enormous asteroid to zip between Earth and moon Wednesday |publisher=[[Fox News]] |url=https://www.foxnews.com/science/very-close-encounter-enormous-asteroid-to-zip-between-earth-and-moon-wednesday/ |access-date=4 March 2014}}</ref>

<ref name="WRD-20140305">{{cite magazine |last=Mann |first=Adam |title=Watch Live as an Asteroid Slices Between the Earth and Moon |url=https://www.wired.com/wiredscience/2014/03/watch-live-asteroid-close/ |date=5 March 2014 |magazine=[[Wired (magazine)|Wired]] |accessdate=5 March 2014 }}</ref>

</references>

== External links == * [http://www.jpl.nasa.gov/news/news.php?release=2014-068 Asteroid Will Safely Pass Closer Than Moon Wednesday] (NASA 4 March 2014) * [http://www.universetoday.com/109997/watch-the-close-pass-of-neo-asteroid-2014-dx110-wednesday-night/ Watch the Close Pass of NEO Asteroid 2014 DX110 Wednesday Night] (David Dickinson at Universe Today 4 March 2014) * [https://web.archive.org/web/20140305213648/http://www.itelescope.net/sky-alerts/2014/3/5/alert-neo-2014-dx110-on-5-march.html ALERT! NEO 2014 DX110 on 5 March] (Ian Musgrave at itelescope.net 5 March 2014) * {{NeoDys|2014+DX110}} * {{ESA-SSA|2014DX110}} * {{JPL small body|id=3662876}}

{{2014 in space}}  {{Small Solar System bodies}} {{Authority control}}

{{DEFAULTSORT:2014 DX110}} [[Category:Apollo asteroids|#]] [[Category:Minor planet object articles (unnumbered)]] [[Category:Near-Earth objects removed from the Sentry Risk Table|#]] [[Category:Fast rotating minor planets|#]] [[Category:Near-Earth objects in 2014|20140305]] [[Category:Astronomical objects discovered in 2014|20140228]]