15436 Dexius
{{Short description|Jupiter trojan asteroid}}
{{Use dmy dates|date=March 2018}}
{{Infobox planet
| minorplanet = yes
| name = 15436 Dexius
| background = #C2FFFF
| image =
| image_size =
| caption =
| discoverer = LINEAR
| discovery_site = Lincoln Lab's ETS
| discovered = 10 November 1998
| mpc_name = (15436) Dexius
| alt_names = {{nowrap|{{mp|1998 VU|30}}{{·}}1962 WO}}
{{mp|2000 AS|81}}
| adjective = Dexian
| pronounced =
| named_after = Dexius
{{small|(Greek mythology)}}
| mp_category = Jupiter trojan
{{nowrap|Greek{{·}}background}}
| epoch = 23 March 2018 (JD 2458200.5)
| uncertainty = 0
| observation_arc = 54.93 yr (20,063 d)
| aphelion = 5.4369 AU
| perihelion = 4.9840 AU
| semimajor = 5.2104 AU
| eccentricity = 0.0435
| period = 11.89 yr (4,344 d)
| mean_anomaly = 215.97°
| mean_motion = {{Deg2DMS|0.0829|sup=ms}} / day
| inclination = 16.264°
| asc_node = 253.43°
| arg_peri = 179.02°
| jupiter_moid = 0.094 AU
| tisserand = 2.9180
| mean_diameter = {{val|78.63|2.20|ul=km}}
{{val|85.71|10.2|u=km}}
86.00 km {{small|(derived)}}
{{val|87.65|0.77|u=km}}
| rotation = {{val|8.970|0.003|ul=h}}{{efn|name=lightcurve-plot-2014}}
{{val|8.97|0.01|u=h}}{{efn|name=lightcurve-plot-2013}}
| albedo = {{val|0.0381|0.011}}
{{val|0.046|0.003}}
{{val|0.053|0.005}}
{{val|0.0547}} {{small|(derived)}}
| spectral_type = C {{small|(assumed)}}
V–I {{=}} {{val|0.870|0.052}}
| abs_magnitude = 9.1
{{val|9.28|0.37}}
9.50
}}
15436 Dexius, provisional designation: {{mp|1998 VU|30}}, is a large Jupiter trojan from the Greek camp, approximately {{convert|86|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 10 November 1998, by astronomers of the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico. The presumed C-type asteroid has a rotation period of 8.97 hours. It is one of the 50 largest Jupiter trojans and was named after Dexius, father of Iphinous from Greek mythology.
Orbit and classification
Dexius is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's {{L4}} Lagrangian point, 60° ahead of its orbit in a 1:1 resonance (see Trojans in astronomy). It is a non-family asteroid in the Jovian background population. It orbits the Sun at a distance of 5.0–5.4 AU once every 11 years and 11 months (4,344 days; semi-major axis of 5.21 AU). Its orbit has an eccentricity of 0.04 and an inclination of 16° with respect to the ecliptic.
The body's observation arc begins with its first observation as {{mp|1962 WO}} at the Goethe Link Observatory in November 1962, or 36 years prior to its official discovery observation at Socorro.
Numbering and naming
This minor planet was numbered on 21 June 2000 ({{small|M.P.C. 40826}}). On 14 May 2021, the object was named by the Working Group for Small Bodies Nomenclature (WGSBN), after Dexius, father of Iphinous from Greek mythology.
Physical characteristics
Dexius is a generically assumed C-type asteroid.
= Rotation period =
In 2013 and 2014, two rotational lightcurves of Dexius were obtained from photometric observations by Robert Stephens at the Trojan Station of Center for Solar System Studies {{Obscode|U81}} in Landers, California. Lightcurve analysis gave an identical rotation period of 8.97 hours with a brightness amplitude of 0.15 and 0.29 magnitude, respectively ({{small|U=3/3}}).{{efn|name=lightcurve-plot-2014}}{{efn|name=lightcurve-plot-2013}}
= Diameter and albedo =
According to the surveys carried out by the Japanese Akari satellite, the Infrared Astronomical Satellite IRAS, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), this Jovian trojan measures between 78.63 and 87.65 kilometers in diameter and its surface has an albedo between 0.038 and 0.053. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0547 and a diameter of 86.00 kilometers based on an absolute magnitude of 9.1.
{{Largest Jupiter trojans}}
Notes
{{notelist|refs=
{{efn|name=lightcurve-plot-2013|1=[http://www.planetarysciences.org/plots/RDS/15436_1998VU30_2013-02-26.PNG Lightcurve plot of (15436) 1998 VU30] from 2013 by Robert D. Stephens at the Center for Solar System Studies {{Obscode|U81}}. Rotation period {{val|8.97|0.01}} hours. Quality code is 3. Summary figures at the [http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=15436%7C1998+VU30 LCDB].}}
{{efn|name=lightcurve-plot-2014|1=[http://www.planetarysciences.org/plots/RDS/15436_1998VU30_2014-03-12.PNG Lightcurve plot of (15436) 1998 VU30] from 2014 by Robert D. Stephens at the Center for Solar System Studies {{Obscode|U81}}. Rotation period {{val|8.970|0.003}} hours with a brightness amplitude of {{val|0.18}} mag. Quality code is 3 or 3-. Summary figures at the [http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=15436%7C1998+VU30 LCDB].}}
}}
References
{{reflist|30em|refs=
|type = 2017-10-29 last obs.
|title = JPL Small-Body Database Browser: 15436 (1998 VU30)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2015436
|publisher = Jet Propulsion Laboratory
|accessdate = 30 May 2018}}
|title = JPL Small-Body Database Browser: Jupiter trojans larger than 50 kilometers
|url = https://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=all;obj_kind=all;obj_numbered=all;ast_orbit_class=TJN;OBJ_field=0;ORB_field=0;c1_group=OBJ;c1_item=Ap;c1_op=%3E;c1_value=50;table_format=HTML;max_rows=100;format_option=comp;c_fields=AcBhBgBjBiBnBsAiAp;.cgifields=format_option;.cgifields=ast_orbit_class;.cgifields=table_format;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=com_orbit_class&query=1&c_sort=ApD
|publisher = Jet Propulsion Laboratory
|accessdate = 30 May 2018}}
|title = 15436 (1998 VU30)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=15436
|accessdate = 30 May 2018}}
|title = List of Jupiter Trojans
|work = Minor Planet Center
|date = 2 February 2018
|url = https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html
|accessdate = 30 May 2018}}
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|accessdate = 30 May 2018}}
|title = WGSBN Bulletin Archive
|work = Working Group for Small Bodies Nomenclature
|date = 14 May 2021
|url = https://www.wgsbn-iau.org/files/Bulletins/index.html
|accessdate = 16 May 2021}} ([https://www.wgsbn-iau.org/files/Bulletins/V001/WGSBNBull_V001_001.pdf Bulletin #1])
|first1 = T. |last1 = Grav
|first2 = A. K. |last2 = Mainzer
|first3 = J. M. |last3 = Bauer
|first4 = J. R. |last4 = Masiero
|first5 = C. R. |last5 = Nugent
|date = November 2012
|title = WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy
|journal = The Astrophysical Journal
|volume = 759
|issue = 1
|page = 10
|bibcode = 2012ApJ...759...49G
|doi = 10.1088/0004-637X/759/1/49
|arxiv = 1209.1549
|s2cid = 119101711
}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-6?-source=J/ApJ/759/49/table1&MPC=15436 online catalog])
|first1 = E. F. |last1 = Tedesco
|first2 = P. V. |last2 = Noah
|first3 = M. |last3 = Noah
|first4 = S. D. |last4 = Price
|date = October 2004
|title = IRAS Minor Planet Survey V6.0
|url = https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab
|journal = NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0
|volume = 12
|pages = IRAS-A-FPA-3-RDR-IMPS-V6.0
|bibcode = 2004PDSS...12.....T
|accessdate = 15 June 2018}}
|title = Asteroid (15436) 1998 VU30
|work = Small Bodies Data Ferret
|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=15436
|accessdate = 30 May 2018
|archive-date = 3 October 2020
|archive-url = https://web.archive.org/web/20201003171340/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=15436
|url-status = dead
}}
|title = Asteroid (15436) 1998 VU30
|publisher = AstDyS-2, Asteroids – Dynamic Site
|url = https://newton.spacedys.com/astdys/index.php?n=15436&pc=1.1.6
|accessdate = 25 May 2018}}
|title = LCDB Data for (15436)
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=15436%7C
|accessdate = 30 May 2018}}
|display-authors = 6
|first1 = Fumihiko |last1 = Usui
|first2 = Daisuke |last2 = Kuroda
|first3 = Thomas G. |last3 = Müller
|first4 = Sunao |last4 = Hasegawa
|first5 = Masateru |last5 = Ishiguro
|first6 = Takafumi |last6 = Ootsubo
|first7 = Daisuke |last7 = Ishihara
|first8 = Hirokazu |last8 = Kataza
|first9 = Satoshi |last9 = Takita
|first10 = Shinki |last10 = Oyabu
|first11 = Munetaka |last11 = Ueno
|first12 = Hideo |last12 = Matsuhara
|first13 = Takashi |last13 = Onaka
|date = October 2011
|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
|journal = Publications of the Astronomical Society of Japan
|volume = 63
|issue = 5
|pages = 1117–1138
|bibcode = 2011PASJ...63.1117U
|doi = 10.1093/pasj/63.5.1117
|doi-access=
}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=15436 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])
|first1 = Linda M. |last1 = French
|first2 = Robert, D. |last2 = Stephens
|first3 = Daniel R. |last3 = Coley
|first4 = Lawrence H. |last4 = Wasserman
|first5 = Faith |last5 = Vilas
|first6 = Daniel |last6 = La Rocca
|date = October 2013
|title = A Troop of Trojans: Photometry of 24 Jovian Trojan Asteroids
|journal = The Minor Planet Bulletin
|volume = 40
|issue = 4
|pages = 198–203
|issn = 1052-8091
|bibcode = 2013MPBu...40..198F}}
|first1 = Robert D. |last1 = Stephens
|first2 = Daniel R. |last2 = Coley
|first3 = Brian D. |last3 = Warner
|first4 = Linda, M. |last4 = French
|date = October 2016
|title = Lightcurves of Jovian Trojan Asteroids from the Center for Solar System Studies: L4 Greek Camp and Spies
|journal = The Minor Planet Bulletin
|volume = 43
|issue = 4
|pages = 323–331
|issn = 1052-8091
|bibcode = 2016MPBu...43..323S}}
|display-authors = 6
|first1 = Peter |last1 = Veres
|first2 = Robert |last2 = Jedicke
|first3 = Alan |last3 = Fitzsimmons
|first4 = Larry |last4 = Denneau
|first5 = Mikael |last5 = Granvik
|first6 = Bryce |last6 = Bolin
|first7 = Serge |last7 = Chastel
|first8 = Richard J. |last8 = Wainscoat
|first9 = William S. |last9 = Burgett
|first10 = Kenneth C. |last10 = Chambers
|first11 = Heather |last11 = Flewelling
|first12 = Nick |last12 = Kaiser
|first13 = Eugen A. |last13 = Magnier
|first14 = Jeff S. |last14 = Morgan
|first15 = Paul A. |last15 = Price
|first16 = John L. |last16 = Tonry
|first17 = Christopher |last17 = Waters
|date = November 2015
|title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results
|journal = Icarus
|volume = 261
|pages = 34–47
|bibcode = 2015Icar..261...34V
|doi = 10.1016/j.icarus.2015.08.007
|arxiv = 1506.00762|s2cid = 53493339 }}
}}
External links
- [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
- [http://planetarysciences.org/ Center for Solar System Studies] (CS3)
- [https://www.minorplanetcenter.net/iau/lists/NumberedMPs015001.html Discovery Circumstances: Numbered Minor Planets (15001)-(20000)] – Minor Planet Center
- {{AstDys|15436}}
- {{JPL small body|id=2015436}}
{{Minor planets navigator | |number=15436 |}}
{{Small Solar System bodies}}
{{Authority control}}
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