“(308933) 2006 SQ372”的意思、由来-开放百科全书

It has a strongly eccentric orbit, crossing that of Neptune near perihelion but bringing it more than 1,500 AU from the Sun at aphelion.^[6] It takes about 22,500 years to orbit the barycenter of the Solar System.^[24] The large semi-major axis makes it similar to {{mpl-|87269|2000 OO|67}} and {{dp|Sedna}}.^[24] With an absolute magnitude (H) of 8.1, it is estimated to be about 60 to 140 km in diameter.^[11] Michael Brown estimates that it has an albedo of 0.08 which would give a diameter of around 110 km.^[13]

The object could possibly be a comet.^[24] The discoverers hypothesize that the object could come from the Hills cloud,^[24] but other scientists like California Institute of Technology's Michael Brown also consider other possibilities, including the theory "it may have formed from debris just beyond Neptune [in the Kuiper belt] and been 'kicked' into its distant orbit by a planet like Neptune or Uranus".^[31]

Perturbation

The orbit of {{mp|2006 SQ|372}} currently comes closer to Neptune than any of the other giant planets.^[1] More than half of the simulations of this object show that it gets too close to either Uranus or Neptune within the next 180 million years, sending it in a currently unknown direction.^[33] This makes it difficult to classify this object as only a centaur or a scattered disc object. The Minor Planet Center, which officially catalogues all trans-Neptunian objects, lists centaurs and SDOs together.^[2] (29981) 1999 TD₁₀ is another such object that blurs the two categories.^[35]

Given the extreme orbital eccentricity of this object, different epochs can generate quite different heliocentric unperturbed two-body best-fit solutions to the aphelion distance (maximum distance) of this object.{{ref_label|B|b|none}} With a 2005 epoch the object had an approximate period of about 22,000 years with aphelion at 1557 AU.^[6] But using a 2011 epoch shows a period of about 32,000 years with aphelion at 2006 AU. For objects at such high eccentricity, the Sun's barycentric coordinates are more stable than heliocentric coordinates.^[24] Using JPL Horizons with an observed orbital arc of only 2.9 years, the barycentric orbital elements for epoch 2008-May-14 generate a semi-major axis of 796 AU and a period of 22,466 years.^[24]

Comparison

See also

Notes

References

1. ^¹²³⁴⁵⁶{{cite web |title = 308933 (2006 SQ372) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=308933 |accessdate = 23 February 2018}}
2. ^¹²³{{cite web |title = List Of Centaurs and Scattered-Disk Objects |work = Minor Planet Center |url = https://www.minorplanetcenter.net/iau/lists/t_centaurs.html |accessdate = 23 February 2018}}
3. ^¹{{cite web |date = 2007-01-08 |title = MPEC 2007-A27 : 2006 SQ372 |publisher = IAU Minor Planet Center |url = http://www.minorplanetcenter.org/mpec/K07/K07A27.html |accessdate = 2011-05-26}}
4. ^¹²³{{cite web |author=Marc W. Buie |author-link=Marc W. Buie |type=2010-09-17 using 64 of 65 observations over 5.01 years |title=Orbit Fit and Astrometric record for 308933 |publisher=SwRI (Space Science Department) |url=http://www.boulder.swri.edu/~buie/kbo/astrom/308933.html |accessdate=2008-09-05}}
5. ^¹{{cite web |date=2011-01-23 |author=Horizons output |url=http://home.surewest.net/kheider/astro/2006SQ372Barycenter.txt |title=Barycentric Osculating Orbital Elements for 2006 SQ372 |accessdate=2011-01-24 |deadurl=yes |archiveurl=https://web.archive.org/web/20120225015302/http://home.surewest.net/kheider/astro/2006SQ372Barycenter.txt |archivedate=2012-02-25 |df= }} (Horizons)
6. ^¹²³⁴{{cite web |title = List of Known Trans-Neptunian Objects |work = Johnston's Archive |date = 30 December 2017 |last = Johnston |first= Wm. Robert |url = http://www.johnstonsarchive.net/astro/tnoslist.html |accessdate = 23 February 2018}}
7. ^¹²³⁴{{cite web |title = How many dwarf planets are there in the outer solar system? |publisher = California Institute of Technology |last = Brown |first= Michael E. |url = http://web.gps.caltech.edu/~mbrown/dps.html |accessdate = 23 February 2018}}
8. ^¹²{{cite web |title = Asteroid Size Estimator |publisher = CNEOS NASA/JPL |url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html |accessdate = 23 February 2018}}
9. ^¹{{cite web |date=25 August 2008 |title=Sky survey yields new cosmic haul |publisher=BBC |author=Dr Chris Lintott |url=http://news.bbc.co.uk/2/hi/science/nature/7580539.stm |accessdate=2008-09-06 |archiveurl=https://web.archive.org/web/20080906065424/http://news.bbc.co.uk/2/hi/science/nature/7580539.stm |archivedate=6 September 2008 |deadurl=no |df= }}
10. ^¹{{cite web |date=1999-11-11 |title=New Object in Solar System Defies Categories |publisher=Space.com |author=Kenneth Silber |url=http://www.space.com/scienceastronomy/solarsystem/centaur_disc_991111.html |accessdate=2008-09-07 |deadurl=yes |archiveurl=https://web.archive.org/web/20050921034710/http://www.space.com/scienceastronomy/solarsystem/centaur_disc_991111.html |archivedate=2005-09-21 |df= }}
11. ^¹²³⁴⁵⁶⁷⁸{{cite journal|display-authors=6|last=Kaib|first=Nathan A.|author2=Becker, Andrew C.|author3=Jones, R. Lynne|author4=Puckett, Andrew W.|author5=Bizyaev, Dmitry|author6=Dilday, Benjamin|author7=Frieman, Joshua A.|author8=Oravetz, Daniel J.|author9=Pan, Kaike|author10=Quinn, Thomas|author11=Schneider, Donald P.|author12=Watters, Shannon|date=2009|title=2006 SQ372: A Likely Long-Period Comet from the Inner Oort Cloud|arxiv=0901.1690|bibcode = 2009ApJ...695..268K |doi = 10.1088/0004-637X/695/1/268}}
12. ^¹{{cite news|title=New "Minor Planet" Found in Solar System |work=National Geographic News |date=19 August 2008 |url=http://news.nationalgeographic.com/news/2008/08/080819-new-planet.html |accessdate=2008-08-18 |archiveurl=https://web.archive.org/web/20080821210844/http://news.nationalgeographic.com/news/2008/08/080819-new-planet.html |archivedate=21 August 2008 |deadurl=no |df= }}
13. ^¹{{cite web |url=https://www.centauri-dreams.org/2008/08/18/an-icy-wanderer-from-the-oort-cloud/ |title=An Icy Wanderer from the Oort Cloud |author= Paul Gilster |publisher=centauri-dreams.org |date= 18 August 2008 |accessdate= 23 February 2018}}
14. ^¹{{cite news|title=First object seen from solar system's inner Oort cloud |work=New Scientist |date=18 August 2008 |url=https://www.newscientist.com/article/dn14548-first-object-seen-from-solar-systems-inner-oort-cloud.html |accessdate=2008-08-18 |archiveurl=https://web.archive.org/web/20080828031020/http://space.newscientist.com/article/dn14548-first-object-seen-from-solar-systems-inner-oort-cloud.html |archivedate=28 August 2008 |deadurl=no |df= }}

词条	(308933) 2006 SQ372
释义	Description Perturbation Comparison See also Notes References External links {{DISPLAYTITLE:{{mp\|(308933) 2006 SQ\|372}}}}{{Infobox planet \| minorplanet = yes \| name = (308933) {{mp\|2006 SQ\|372}} \| background = #C2E0FF \| image = 308933 2006 SQ 372 Orbit.png \| image_size = \| caption = An illustration of the orbit of 308933 2006 SQ 372. \| discovery_ref = ^[1]^[2] \| discoverer = A. C. Becker A. W. Puckett J. Kubica \| discovery_site = APO \| discovered = 27 September 2006 \| mpc_name = (308933) {{mp\|2006 SQ\|372}} \| alt_names = {{mp\|2006 SQ\|372}} \| pronounced = \| named_after = \| mp_category = TNO {{·}}centaur ^[2]^[6]^[7]{{·}}distant ^[1] \| orbit_ref = \| epoch = 23 March 2018 (JD 2458200.5) \| uncertainty = 1 \| observation_arc = 9.86 yr (3,602 days) \| aphelion = 1609.10 AU \| perihelion = 24.139 AU \| semimajor = 816.62 AU \| eccentricity = 0.9704 \| period = 23336.64 yr (8,523,707 days) \| mean_anomaly = 0.1796° \| mean_motion = {{Deg2DMS\|0.0000\|sup=ms}} / day \| inclination = 19.496° \| asc_node = 197.34° \| arg_peri = 122.28° \| neptune_moid = 1.499 AU^[1] \| mean_diameter = 60–140 km^[11] 122 km^[7] 124 km^[13] \| rotation = \| albedo = 0.08 {{small\|(estimate)}}^[13] \| spectral_type = IR-RR ^[7] B–R {{=}} 1.62^[7] \| abs_magnitude = 7.8{{·}}8.0^[13] }}{{mp\|(308933) 2006 SQ\|372}} is a trans-Neptunian object and highly eccentric centaur on a cometary-like orbit in the outer region of the Solar System, approximately {{convert\|123\|km\|mi\|abbr=off\|sp=us}} in diameter. It was discovered through the Sloan Digital Sky Survey by astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica on images first taken on 27 September 2006 (with precovery images dated to 13 September 2005).^[1]^[20]^[21]^[22] Description It has a strongly eccentric orbit, crossing that of Neptune near perihelion but bringing it more than 1,500 AU from the Sun at aphelion.^[6] It takes about 22,500 years to orbit the barycenter of the Solar System.^[24] The large semi-major axis makes it similar to {{mpl-\|87269\|2000 OO\|67}} and {{dp\|Sedna}}.^[24] With an absolute magnitude (H) of 8.1, it is estimated to be about 60 to 140 km in diameter.^[11] Michael Brown estimates that it has an albedo of 0.08 which would give a diameter of around 110 km.^[13] The object could possibly be a comet.^[24] The discoverers hypothesize that the object could come from the Hills cloud,^[24] but other scientists like California Institute of Technology's Michael Brown also consider other possibilities, including the theory "it may have formed from debris just beyond Neptune [in the Kuiper belt] and been 'kicked' into its distant orbit by a planet like Neptune or Uranus".^[31] Perturbation The orbit of {{mp\|2006 SQ\|372}} currently comes closer to Neptune than any of the other giant planets.^[1] More than half of the simulations of this object show that it gets too close to either Uranus or Neptune within the next 180 million years, sending it in a currently unknown direction.^[33] This makes it difficult to classify this object as only a centaur or a scattered disc object. The Minor Planet Center, which officially catalogues all trans-Neptunian objects, lists centaurs and SDOs together.^[2] (29981) 1999 TD₁₀ is another such object that blurs the two categories.^[35] Baricentric orbital elements aphelion (Q) = 1570 AU^[36]{{ref_label\|A\|a\|none}} (Heliocentric 2006 AU) semimajor =736.67 AU^[24]{{ref_label\|A\|a\|none}} (Heliocentric 1015 AU) period = 22,466 yr^[24]{{ref_label\|A\|a\|none}} (Heliocentric 32,347 yr) Given the extreme orbital eccentricity of this object, different epochs can generate quite different heliocentric unperturbed two-body best-fit solutions to the aphelion distance (maximum distance) of this object.{{ref_label\|B\|b\|none}} With a 2005 epoch the object had an approximate period of about 22,000 years with aphelion at 1557 AU.^[6] But using a 2011 epoch shows a period of about 32,000 years with aphelion at 2006 AU. For objects at such high eccentricity, the Sun's barycentric coordinates are more stable than heliocentric coordinates.^[24] Using JPL Horizons with an observed orbital arc of only 2.9 years, the barycentric orbital elements for epoch 2008-May-14 generate a semi-major axis of 796 AU and a period of 22,466 years.^[24] Comparison {{clear}} See also {{mpl\|2007 TG\|422}} {{LoMP\|29981\|{{mp\|(29981) 1999 TD\|10}}}} {{mpl\|(87269) 2000 OO\|67}} List of Solar System objects by greatest aphelion Notes {{refbegin}} {{Note_label\|A\|a\|none}} Solution using the Solar System Barycenter {{Note_label\|B\|b\|none}} Read osculating orbit for more details about heliocentric unperturbed two-body solutions {{refend}} References 1. ^¹²³⁴⁵⁶{{cite web \|title = 308933 (2006 SQ372) \|work = Minor Planet Center \|url = http://www.minorplanetcenter.net/db_search/show_object?object_id=308933 \|accessdate = 23 February 2018}} 2. ^¹²³{{cite web \|title = List Of Centaurs and Scattered-Disk Objects \|work = Minor Planet Center \|url = https://www.minorplanetcenter.net/iau/lists/t_centaurs.html \|accessdate = 23 February 2018}} 3. ^¹{{cite web \|date = 2007-01-08 \|title = MPEC 2007-A27 : 2006 SQ372 \|publisher = IAU Minor Planet Center \|url = http://www.minorplanetcenter.org/mpec/K07/K07A27.html \|accessdate = 2011-05-26}} 4. ^¹²³{{cite web \|author=Marc W. Buie \|author-link=Marc W. Buie \|type=2010-09-17 using 64 of 65 observations over 5.01 years \|title=Orbit Fit and Astrometric record for 308933 \|publisher=SwRI (Space Science Department) \|url=http://www.boulder.swri.edu/~buie/kbo/astrom/308933.html \|accessdate=2008-09-05}} 5. ^¹{{cite web \|date=2011-01-23 \|author=Horizons output \|url=http://home.surewest.net/kheider/astro/2006SQ372Barycenter.txt \|title=Barycentric Osculating Orbital Elements for 2006 SQ372 \|accessdate=2011-01-24 \|deadurl=yes \|archiveurl=https://web.archive.org/web/20120225015302/http://home.surewest.net/kheider/astro/2006SQ372Barycenter.txt \|archivedate=2012-02-25 \|df= }} (Horizons) 6. ^¹²³⁴{{cite web \|title = List of Known Trans-Neptunian Objects \|work = Johnston's Archive \|date = 30 December 2017 \|last = Johnston \|first= Wm. Robert \|url = http://www.johnstonsarchive.net/astro/tnoslist.html \|accessdate = 23 February 2018}} 7. ^¹²³⁴{{cite web \|title = How many dwarf planets are there in the outer solar system? \|publisher = California Institute of Technology \|last = Brown \|first= Michael E. \|url = http://web.gps.caltech.edu/~mbrown/dps.html \|accessdate = 23 February 2018}} 8. ^¹²{{cite web \|title = Asteroid Size Estimator \|publisher = CNEOS NASA/JPL \|url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html \|accessdate = 23 February 2018}} 9. ^¹{{cite web \|date=25 August 2008 \|title=Sky survey yields new cosmic haul \|publisher=BBC \|author=Dr Chris Lintott \|url=http://news.bbc.co.uk/2/hi/science/nature/7580539.stm \|accessdate=2008-09-06 \|archiveurl=https://web.archive.org/web/20080906065424/http://news.bbc.co.uk/2/hi/science/nature/7580539.stm \|archivedate=6 September 2008 \|deadurl=no \|df= }} 10. ^¹{{cite web \|date=1999-11-11 \|title=New Object in Solar System Defies Categories \|publisher=Space.com \|author=Kenneth Silber \|url=http://www.space.com/scienceastronomy/solarsystem/centaur_disc_991111.html \|accessdate=2008-09-07 \|deadurl=yes \|archiveurl=https://web.archive.org/web/20050921034710/http://www.space.com/scienceastronomy/solarsystem/centaur_disc_991111.html \|archivedate=2005-09-21 \|df= }} 11. ^¹²³⁴⁵⁶⁷⁸{{cite journal\|display-authors=6\|last=Kaib\|first=Nathan A.\|author2=Becker, Andrew C.\|author3=Jones, R. Lynne\|author4=Puckett, Andrew W.\|author5=Bizyaev, Dmitry\|author6=Dilday, Benjamin\|author7=Frieman, Joshua A.\|author8=Oravetz, Daniel J.\|author9=Pan, Kaike\|author10=Quinn, Thomas\|author11=Schneider, Donald P.\|author12=Watters, Shannon\|date=2009\|title=2006 SQ372: A Likely Long-Period Comet from the Inner Oort Cloud\|arxiv=0901.1690\|bibcode = 2009ApJ...695..268K \|doi = 10.1088/0004-637X/695/1/268}} 12. ^¹{{cite news\|title=New "Minor Planet" Found in Solar System \|work=National Geographic News \|date=19 August 2008 \|url=http://news.nationalgeographic.com/news/2008/08/080819-new-planet.html \|accessdate=2008-08-18 \|archiveurl=https://web.archive.org/web/20080821210844/http://news.nationalgeographic.com/news/2008/08/080819-new-planet.html \|archivedate=21 August 2008 \|deadurl=no \|df= }} 13. ^¹{{cite web \|url=https://www.centauri-dreams.org/2008/08/18/an-icy-wanderer-from-the-oort-cloud/ \|title=An Icy Wanderer from the Oort Cloud \|author= Paul Gilster \|publisher=centauri-dreams.org \|date= 18 August 2008 \|accessdate= 23 February 2018}} 14. ^¹{{cite news\|title=First object seen from solar system's inner Oort cloud \|work=New Scientist \|date=18 August 2008 \|url=https://www.newscientist.com/article/dn14548-first-object-seen-from-solar-systems-inner-oort-cloud.html \|accessdate=2008-08-18 \|archiveurl=https://web.archive.org/web/20080828031020/http://space.newscientist.com/article/dn14548-first-object-seen-from-solar-systems-inner-oort-cloud.html \|archivedate=28 August 2008 \|deadurl=no \|df= }} ^[1]^[2]^[3]^[4]^[5]^[6]^[7]^[8]^[9]^[10]^[11]^[12]^[13]^[14] }} External links {{Cite journal \| title = MPEC 2007-A27: 2006 SQ372 \| journal = Minor Planet Electronic Circulars \| date = 2007-01-08 \| url = http://www.cfa.harvard.edu/mpec/K07/K07A27.html}} {{JPL small body\|id=308933}} {{Use dmy dates\|date=February 2018}}{{Minor planets navigator \| \|number=308933 \|PageName={{mp\|(308933) 2006 SQ\|372}} \| }}{{Small Solar System bodies}}{{Trans-Neptunian objects}}{{DEFAULTSORT:2006 SQ372}} 8 : Scattered disc and detached objects\|Centaurs (minor planets)\|Extended centaurs\|Discoveries by Andrew C. Becker\|Discoveries by Andrew W. Puckett\|Discoveries by Jeremy Martin Kubica\|Inner Oort cloud\|Astronomical objects discovered in 2006
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Description

Perturbation

Comparison

See also

Notes

References

External links