“2014 DX110”的意思、由来-开放百科全书

On 5 March 2014 at 21:00 UT the asteroid passed {{convert |0.00232 |AU |km mi |abbr=on |lk=on}} from Earth^[8] and reached about apparent magnitude 15.^[12]^[16] At 22:22 UT it passed {{convert |0.00249 |AU |km mi |abbr=on |lk=off}} from the Moon.^[8] By 6 March 2014 18:00 UT, the asteroid was less than 30 degrees from the Sun and dimming significantly.^[12]

It has an observation arc of 5 days with an uncertainty parameter of 6. It was removed from the JPL Sentry Risk Table on 5 March 2014 using JPL solution 3 with an observation arc of 5 days.^[20] 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 Earth on 4 March 2046.^[4] With a 2046 Palermo Technical Scale of −7.11,^[4] the odds of impact by {{mp|2014 DX|110}} in 2046 were about 13 million times less^[23] 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.^[24] Using the 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.^[25]

References

1. ^¹²{{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)
2. ^¹²³{{cite web |type=last observation: 5 March 2014; 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}}
3. ^¹²³{{cite web |title=2014DX110 Ephemerides for 15 February 2014 through 10 March 2014 |publisher=NEODyS (Near Earth Objects – 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}}
4. ^¹²³⁴{{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 |deadurl=yes |archiveurl=https://web.archive.org/web/20140305155208/http://neo.jpl.nasa.gov/risk/2014dx110.html |archivedate=March 5, 2014 }}
5. ^¹Math: 10^7.11 = 12,882,495
6. ^¹{{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 |accessdate=4 March 2014}}
7. ^¹{{cite web |title=Date/Time Removed |publisher=NASA/JPL Near-Earth Object Program Office |url=http://neo.jpl.nasa.gov/risk/removed.html |accessdate=5 March 2014}}
8. ^¹{{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 |deadurl=yes |archiveurl=https://web.archive.org/web/20140307125729/http://neo.jpl.nasa.gov/ca/ |archivedate=7 March 2014 |df= }}
9. ^¹{{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}}
10. ^¹{{cite web |title=2014DX110 Ephemerides for 2 March 2046 through 6 March 2046 |publisher=NEODyS (Near Earth Objects – 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}}
11. ^¹{{cite web |date=4 March 2014 |title=Very close encounter: Enormous asteroid to zip between Earth and moon Wednesday |publisher=Fox News |url=http://www.foxnews.com/science/2014/03/04/enormous-asteroid-to-fly-between-earth-and-moon-wednesday/ |accessdate=4 March 2014}}
12. ^¹{{cite web |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 |work=Wired |accessdate=5 March 2014 }}

词条	2014 DX110
释义	Description References External links {{DISPLAYTITLE:{{mp\|2014 DX\|110}}}}{{Infobox planet \| minorplanet = yes \| background = #FFC2E0 \| name = {{mp\|2014 DX\|110}} \| discovery_ref = ^[1] \| discoverer = Pan-STARRS (F51) \| discovered = 28 February 2014 \| mpc_name = {{mp\|2014 DX\|110}} \| mp_category = Apollo, NEO \| orbit_ref = \| epoch = 13 January 2016 (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 yr (1193.5 d) \| inclination = 5.7362° (i) \| asc_node = 163.83° (Ω) \| mean_anomaly = 193.14° (M) \| arg_peri = 56.517° (ω) \| dimensions = ~{{convert\|23\|m\|sp=us}}^[4] {{convert\|20\|-\|40\|m\|ft\|abbr=on}}^[5] \| mass = 1.6{{e\|7}} kg (assumed)^[4] \| magnitude = 15–32 \| abs_magnitude = 25.7 \| 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 near-Earth object of the Apollo group, approximately 30 meters in diameter. It passed less than 1 lunar distance from Earth on 5 March 2014.^[8] With an absolute magnitude of 25.7, this asteroid is potentially the largest asteroid to come 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.^[10]^[11] Description {{mp\|2014 DX\|110}} came to opposition (furthest 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.^[12] 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.^[1] On 5 March 2014 at 21:00 UT the asteroid passed {{convert \|0.00232 \|AU \|km mi \|abbr=on \|lk=on}} from Earth^[8] and reached about apparent magnitude 15.^[12]^[16] At 22:22 UT it passed {{convert \|0.00249 \|AU \|km mi \|abbr=on \|lk=off}} from the Moon.^[8] By 6 March 2014 18:00 UT, the asteroid was less than 30 degrees from the Sun and dimming significantly.^[12] It has an observation arc of 5 days with an uncertainty parameter of 6. It was removed from the JPL Sentry Risk Table on 5 March 2014 using JPL solution 3 with an observation arc of 5 days.^[20] 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 Earth on 4 March 2046.^[4] With a 2046 Palermo Technical Scale of −7.11,^[4] the odds of impact by {{mp\|2014 DX\|110}} in 2046 were about 13 million times less^[23] 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.^[24] Using the 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.^[25] References 1. ^¹²{{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) 2. ^¹²³{{cite web \|type=last observation: 5 March 2014; 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}} 3. ^¹²³{{cite web \|title=2014DX110 Ephemerides for 15 February 2014 through 10 March 2014 \|publisher=NEODyS (Near Earth Objects – 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}} 4. ^¹²³⁴{{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 \|deadurl=yes \|archiveurl=https://web.archive.org/web/20140305155208/http://neo.jpl.nasa.gov/risk/2014dx110.html \|archivedate=March 5, 2014 }} 5. ^¹Math: 10^7.11 = 12,882,495 6. ^¹{{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 \|accessdate=4 March 2014}} 7. ^¹{{cite web \|title=Date/Time Removed \|publisher=NASA/JPL Near-Earth Object Program Office \|url=http://neo.jpl.nasa.gov/risk/removed.html \|accessdate=5 March 2014}} 8. ^¹{{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 \|deadurl=yes \|archiveurl=https://web.archive.org/web/20140307125729/http://neo.jpl.nasa.gov/ca/ \|archivedate=7 March 2014 \|df= }} 9. ^¹{{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}} 10. ^¹{{cite web \|title=2014DX110 Ephemerides for 2 March 2046 through 6 March 2046 \|publisher=NEODyS (Near Earth Objects – 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}} 11. ^¹{{cite web \|date=4 March 2014 \|title=Very close encounter: Enormous asteroid to zip between Earth and moon Wednesday \|publisher=Fox News \|url=http://www.foxnews.com/science/2014/03/04/enormous-asteroid-to-fly-between-earth-and-moon-wednesday/ \|accessdate=4 March 2014}} 12. ^¹{{cite web \|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 \|work=Wired \|accessdate=5 March 2014 }} ^[1]^[2]^[3]^[4]^[5]^[6]^[7]^[8]^[9]^[10]^[11]^[12] }} External links Asteroid Will Safely Pass Closer Than Moon Wednesday (NASA 4 March 2014) Watch the Close Pass of NEO Asteroid 2014 DX110 Wednesday Night (David Dickinson at Universe Today 4 March 2014) ALERT! NEO 2014 DX110 on 5 March (Ian Musgrave at itelescope.net 5 March 2014) {{JPL small body\|id=3662876}} {{use dmy dates\|date=February 2018}}{{2014 in space}}{{Small Solar System bodies}}{{DEFAULTSORT:2014 DX110}} 6 : Apollo asteroids\|Minor planet object articles (unnumbered)\|Asteroids removed from the Sentry Risk Table\|Fast rotating minor planets\|Near-Earth objects in 2014\|Astronomical objects discovered in 2014
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References

External links