“(470308) 2007 JH43”的意思、由来-开放百科全书

The minor planet orbits the Sun at a distance of 38.6–40.6 AU once every 249 years and 1 month (90,983 days). Its orbit has an eccentricity of 0.02 and an inclination of 18° with respect to the ecliptic.

The first precovery was taken at the Australian Siding Spring Observatory during the Digitized Sky Survey in 1984, extending the body's observation arc by 23 years prior to its discovery observation.^[3] It came to perihelion around 1888. Based on an absolute magnitude of 4.5 and assuming a generic albedo for trans-Neptunian objects of 0.09, it is about {{convert|500|km|mi}} in diameter, which makes it likely a dwarf planet.^[19]^[7]

Orbital classification

As of 2014, the Minor Planet Center listed {{mp|2007 JH|43}} as a plutino (a trans-Neptunian object in 2:3 mean-motion resonance with Neptune).^[3]^[4] However, the Deep Ecliptic Survey currently shows it as a scattered object, based on a 10-million-year integration of the orbit.^[5]

References

1. ^¹²³⁴{{cite web |title = 470308 (2007 JH43) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=470308 |accessdate = 16 November 2016}}
2. ^¹²{{cite web |author = Marc W. Buie |type = last observation: 2012/05/16 using 45 of 45 observations over 28.19 years |title = Orbit Fit and Astrometric record for 07JH43 |publisher = SwRI (Space Science Department) |url = http://www.boulder.swri.edu/~buie/kbo/astrom/07JH43.html |dead-url = yes |archiveurl = https://web.archive.org/web/20160616183805/http://www.boulder.swri.edu/~buie/kbo/astrom/07JH43.html |archivedate = 2016-06-16 |accessdate = 2014-10-13}}
3. ^¹²{{cite web |title = MPEC 2010-S44 : DISTANT MINOR PLANETS (2010 OCT. 11.0 TT) |publisher = IAU Minor Planet Center |date = 2010-09-25 |url = http://www.minorplanetcenter.org/mpec/K10/K10S44.html |accessdate = 2014-04-06}}
4. ^¹²³{{cite web |date = 24 March 2015 |title = List of Known Trans-Neptunian Objects |publisher = Johnston's Archive |author = Wm. Robert Johnston |url = http://www.johnstonsarchive.net/astro/tnoslist.html |accessdate = 2015-07-22}}
5. ^¹{{cite web |title = How many dwarf planets are there in the outer solar system? |publisher = Gps.caltech.edu |date = 2015-07-21 |url = http://web.gps.caltech.edu/~mbrown/dps.html |accessdate = 2015-07-22}}
6. ^¹²³⁴{{cite web |title = LCDB Data for (470308) |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=470308%7C |accessdate = 16 November 2016}}
7. ^¹{{Cite journal |first1 = Susan D. |last1 = Benecchi |first2 = Scott S. |last2 = Sheppard |date = May 2013 |title = Light Curves of 32 Large Transneptunian Objects |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013AJ....145..124B |journal = The Astronomical Journal |volume = 145 |issue = 5 |page = 19 |bibcode = 2013AJ....145..124B |doi = 10.1088/0004-6256/145/5/124 |access-date= 16 November 2016|arxiv = 1301.5791 }}

词条	(470308) 2007 JH43
释义	Orbital classification References External links {{DISPLAYTITLE:{{mp\|(470308) 2007 JH\|43}}}}{{Infobox planet \| minorplanet = yes \| background = #C2E0FF \| name = {{mp\|(470308) 2007 JH\|43}} \| image = \| caption = \| discovery_ref = \| discoverer = Palomar Obs. {{small\|Unaccredited:}} M. E. Schwamb M. E. Brown D. L. Rabinowitz \| discovered = 10 May 2007 \| discovery_site = Palomar Obs. \| earliest_precovery_date = 7 March 1984 \| mpc_name = {{mp\|2007 JH\|43}} \| mp_category = TNO^[3]{{·}}Plutino^[4] SDO {{small\|(DES)}}^[5] \| orbit_ref = \| epoch = 31 July 2016 (JD 2457600.5) \| uncertainty = 3 \| observation_arc = 31.34 yr (11,446 days) \| aphelion = 40.566 AU \| perihelion = 38.612 AU \| semimajor = 39.589 AU \| eccentricity = 0.0247 \| period = 249.10 yr (90,983 days) \| mean_anomaly = 177.14° \| mean_motion = {{Deg2DMS\|0.0040\|sup=ms}} / day \| inclination = 18.129° \| asc_node = 64.584° \| arg_peri = 4.7053° \| satellites = \| dimensions = 505 km {{small\|(assumed)}}^[7] {{nowrap\|529.08 km {{small\|(calculated)}}^[8]}} \| mass = \| albedo = 0.09 {{small\|(assumed)}}^[7] 0.10 {{small\|(assumed)}}^[8] \| spectral_type = C ^[8] \| abs_magnitude = {{val\|4.49\|0.05}} {{small\|(S)}}^[12] 4.5^[8] }}{{mp\|(470308) 2007 JH\|43}}, provisional designation {{mp\|2007 JH\|43}}, is a trans-Neptunian object in the outer regions of the Solar System, approximately 500 kilometers in diameter. It was discovered on 10 May 2007, by the U.S. Palomar Observatory in California. The team of unaccredited astronomers at Palomar consisted of Megan E. Schwamb, Michael E. Brown and David L. Rabinowitz^[3] The minor planet orbits the Sun at a distance of 38.6–40.6 AU once every 249 years and 1 month (90,983 days). Its orbit has an eccentricity of 0.02 and an inclination of 18° with respect to the ecliptic. The first precovery was taken at the Australian Siding Spring Observatory during the Digitized Sky Survey in 1984, extending the body's observation arc by 23 years prior to its discovery observation.^[3] It came to perihelion around 1888. Based on an absolute magnitude of 4.5 and assuming a generic albedo for trans-Neptunian objects of 0.09, it is about {{convert\|500\|km\|mi}} in diameter, which makes it likely a dwarf planet.^[19]^[7] Orbital classification As of 2014, the Minor Planet Center listed {{mp\|2007 JH\|43}} as a plutino (a trans-Neptunian object in 2:3 mean-motion resonance with Neptune).^[3]^[4] However, the Deep Ecliptic Survey currently shows it as a scattered object, based on a 10-million-year integration of the orbit.^[5] References 1. ^¹²³⁴{{cite web \|title = 470308 (2007 JH43) \|work = Minor Planet Center \|url = http://www.minorplanetcenter.net/db_search/show_object?object_id=470308 \|accessdate = 16 November 2016}} 2. ^¹²{{cite web \|author = Marc W. Buie \|type = last observation: 2012/05/16 using 45 of 45 observations over 28.19 years \|title = Orbit Fit and Astrometric record for 07JH43 \|publisher = SwRI (Space Science Department) \|url = http://www.boulder.swri.edu/~buie/kbo/astrom/07JH43.html \|dead-url = yes \|archiveurl = https://web.archive.org/web/20160616183805/http://www.boulder.swri.edu/~buie/kbo/astrom/07JH43.html \|archivedate = 2016-06-16 \|accessdate = 2014-10-13}} 3. ^¹²{{cite web \|title = MPEC 2010-S44 : DISTANT MINOR PLANETS (2010 OCT. 11.0 TT) \|publisher = IAU Minor Planet Center \|date = 2010-09-25 \|url = http://www.minorplanetcenter.org/mpec/K10/K10S44.html \|accessdate = 2014-04-06}} 4. ^¹²³{{cite web \|date = 24 March 2015 \|title = List of Known Trans-Neptunian Objects \|publisher = Johnston's Archive \|author = Wm. Robert Johnston \|url = http://www.johnstonsarchive.net/astro/tnoslist.html \|accessdate = 2015-07-22}} 5. ^¹{{cite web \|title = How many dwarf planets are there in the outer solar system? \|publisher = Gps.caltech.edu \|date = 2015-07-21 \|url = http://web.gps.caltech.edu/~mbrown/dps.html \|accessdate = 2015-07-22}} 6. ^¹²³⁴{{cite web \|title = LCDB Data for (470308) \|publisher = Asteroid Lightcurve Database (LCDB) \|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=470308%7C \|accessdate = 16 November 2016}} 7. ^¹{{Cite journal \|first1 = Susan D. \|last1 = Benecchi \|first2 = Scott S. \|last2 = Sheppard \|date = May 2013 \|title = Light Curves of 32 Large Transneptunian Objects \|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013AJ....145..124B \|journal = The Astronomical Journal \|volume = 145 \|issue = 5 \|page = 19 \|bibcode = 2013AJ....145..124B \|doi = 10.1088/0004-6256/145/5/124 \|access-date= 16 November 2016\|arxiv = 1301.5791 }} ^[1]^[2]^[3]^[4]^[5]^[6]^[7] }} External links 2007 JH43 Precovery Images {{JPL small body\|id=470308}} {{Trans-Neptunian objects}}{{Dwarf planets}}{{Minor planets navigator\| \|number=470308 \|PageName={{mp\|(470308) 2007 JH\|43}} \| }}{{Small Solar System bodies}}{{DEFAULTSORT:470308}} 5 : Plutinos\|Scattered disc and detached objects\|Discoveries by the Palomar Observatory\|Possible dwarf planets\|Astronomical objects discovered in 2007
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Orbital classification

References

External links