| 词条 | (523639) 2010 RE64 |
| 释义 |
| minorplanet = yes | name = (523639) {{mp|2010 RE|64}} | background = #C2E0FF | image = | image_size = | caption = | discovery_ref = [1] | discoverer = Pan-STARRS 1 | discovery_site = Haleakala Obs. | discovered = 11 July 2010 | mpc_name = (523639) {{mp|2010 RE|64}} | alt_names = {{mp|2010 RE|64}} | pronounced = | named_after = | mp_category = TNO {{·}}SDO[4] distant [1] | orbit_ref = | epoch = 27 April 2019 (JD 2458600.5) | uncertainty = 3{{·}}2 [1] | observation_arc = 7.47 yr (2,729 d) | aphelion = 94.746 AU | perihelion = 36.443 AU | semimajor = 65.595 AU | eccentricity = 0.4444 | period = 531.27 yr (194,045 d) | mean_anomaly = 320.94° | mean_motion = {{Deg2DMS|0.0019|sup=ms}} / day | inclination = 13.550° | asc_node = 67.306° | arg_peri = 20.572° | mean_diameter = {{val|561|ul=km}}[8] {{val|580|u=km}} {{small|(est. at 0.09)}}[9] | rotation = | albedo = 0.09 {{small|(est.)}}[8][9] | spectral_type = | magnitude = 21.45[12] | abs_magnitude = 4.4[1] }}{{mp|(523639) 2010 RE|64}}, provisional designation {{mp|2010 RE|64}}, is a trans-Neptunian object in the scattered disc located in the outermost region of the Solar System, approximately {{convert|570|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 11 July 2010 by the Pan-STARRS-1 survey at the Haleakala Observatory, Hawaii, in the United States.[1] American astronomer Michael Brown considers it a "highly likely" dwarf planet.[8] Classification and orbit{{mp|2010 RE|64}} has an observation arc of 1774 days,[12] and there are currently no known precovery images to help refine its orbit. It is currently 53.7 AU from the Sun.[12] Based on JPL's best-fit solution for the orbit, it reached aphelion around 1829. It is estimated to come to perihelion around 2079. Although the discovery is credited to Pan-STARRS, the object was first announced in a Minor Planet Electronic Circular by American astronomers David Rabinowitz, Megan Schwamb and Suzanne Tourtellotte observing from La Silla Observatory on 9 September 2010.[20]Numbering and namingThis minor planet was numbered by the Minor Planet Center on 25 September 2018 ({{small|M.P.C. 111778}}).[21] As of 2018, it has not been named.[1] Physical characteristicsAssuming a generic trans-Neptunian albedo of 0.09, it is about 580 kilometers in diameter.[9] However, since the true albedo is unknown and it has an absolute magnitude of 4.4, it could easily be from about 370 to 820 km in diameter.[9] Michael Brown estimates a similar diameter of 561 kilometers, also using a geometric albedo of 0.09.[8] References1. ^1 2 3 4 5 6 7 {{cite web |title = 523639 (2010 RE64) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=523639 |accessdate = 8 October 2018}} [1][2][3][4][5][6][7]2. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 8 October 2018}} 3. ^1 {{cite web |title=MPEC 2010-T36 : 2010 RE64 |publisher=IAU Minor Planet Center |date=2010-10-06 |url=http://www.minorplanetcenter.net/mpec/K10/K10T36.html |accessdate=2011-07-06}} 4. ^1 {{cite web |author = Marc W. Buie |author-link = Marc W. Buie |type = last observation: 2011-10-21 using 16 of 16 observations over 1.1 yr |title = Orbit Fit and Astrometric record for 10RE64 |publisher = SwRI (Space Science Department) |url = http://www.boulder.swri.edu/~buie/kbo/astrom/10RE64.html |accessdate = 2009-12-03 |archive-url = https://web.archive.org/web/20110622042844/http://www.boulder.swri.edu/~buie/kbo/astrom/10RE64.html# |archive-date = 22 June 2011 |dead-url = yes |df = dmy-all}} 5. ^1 2 3 {{cite web |title = AstDyS – (523639) 2010 RE64 |publisher = Department of Mathematics, University of Pisa, Italy |url = http://hamilton.dm.unipi.it/astdys/index.php?n=2010RE64&pc=1.1.0 |accessdate = 8 October 2018}} 6. ^1 2 3 4 {{cite web |title = Asteroid Size Estimator |publisher = CNEOS NASA/JPL |url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html |accessdate = 8 October 2018}} 7. ^1 2 3 4 {{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 = 8 October 2018}} }} External links
4 : Scattered disc and detached objects|Discoveries by Pan-STARRS|Possible dwarf planets|Astronomical objects discovered in 2010 |
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