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15436 Dexius
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Jupiter trojan asteroid
March 2018
yes
15436 Dexius
#C2FFFF
LINEAR
Lincoln Lab's ETS
10 November 1998
(15436) Dexius
1998 VU 301962 WO2000 AS 81
Dexian
Dexius(Greek mythology)
Jupiter trojanGreekbackground
23 March 2018 (JD 2458200.5)
0
54.93 yr (20,063 d)
5.4369 AU
4.9840 AU
5.2104 AU
0.0435
11.89 yr (4,344 d)
215.97°
0.0829 ms / day
16.264°
253.43°
179.02°
0.094 AU
2.9180
78.63 2.20 km85.71 10.2 km86.00 km (derived)87.65 0.77 km
8.970 0.003 hlightcurve-plot-20148.97 0.01 hlightcurve-plot-2013
0.0381 0.0110.046 0.0030.053 0.0050.0547 (derived)
C (assumed)V–I 0.870 0.052
9.19.28 0.379.50
15436 Dexius (provisional designation: 1998 VU 30) is a large Jupiter trojan from the Greek camp, approximately 86 km mi off 2 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 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 Astronomical units (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 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 (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 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 (U=3/3).lightcurve-plot-2014lightcurve-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), Dexius 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.
Notes
lightcurve-plot-2013 Lightcurve plot of (15436) 1998 VU30 from 2013 by Robert D. Stephens at the Center for Solar System Studies U81. Rotation period 8.97 0.01 hours. Quality code is 3. Summary figures at the LCDB.
lightcurve-plot-2014 Lightcurve plot of (15436) 1998 VU30 from 2014 by Robert D. Stephens at the Center for Solar System Studies U81. Rotation period 8.970 0.003 hours with a brightness amplitude of 0.18 mag. Quality code is 3 or 3-. Summary figures at the LCDB.
References
30em 2017-10-29 last obs.
JPL Small-Body Database Browser: 15436 (1998 VU30)
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2015436
Jet Propulsion Laboratory
30 May 2018
JPL Small-Body Database Browser: Jupiter trojans larger than 50 kilometers
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
Jet Propulsion Laboratory
30 May 2018
15436 (1998 VU30)
Minor Planet Center
https://www.minorplanetcenter.net/db_search/show_object?object_id=15436
30 May 2018
List of Jupiter Trojans
Minor Planet Center
2 February 2018
https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html
30 May 2018
MPC/MPO/MPS Archive
Minor Planet Center
https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
30 May 2018
WGSBN Bulletin Archive
Working Group for Small Bodies Nomenclature
14 May 2021
https://www.wgsbn-iau.org/files/Bulletins/index.html
16 May 2021 (Bulletin #1)
T. Grav
A. K. Mainzer
J. M. Bauer
J. R. Masiero
C. R. Nugent
November 2012
WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy
The Astrophysical Journal
759
1
10
2012ApJ...759...49G
10.1088/0004-637X/759/1/49
1209.1549
119101711
(online catalog)
E. F. Tedesco
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October 2004
IRAS Minor Planet Survey V6.0
https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab
NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0
12
IRAS-A-FPA-3-RDR-IMPS-V6.0
2004PDSS...12.....T
15 June 2018
Asteroid (15436) 1998 VU30
Small Bodies Data Ferret
https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=15436
30 May 2018
3 October 2020
https://web.archive.org/web/20201003171340/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=15436
dead
Asteroid (15436) 1998 VU30
AstDyS-2, Asteroids – Dynamic Site
https://newton.spacedys.com/astdys/index.php?n=15436&pc=1.1.6
25 May 2018
15436
30 May 2018
6
Fumihiko Usui
Daisuke Kuroda
Thomas G. Müller
Sunao Hasegawa
Masateru Ishiguro
Takafumi Ootsubo
Daisuke Ishihara
Hirokazu Kataza
Satoshi Takita
Shinki Oyabu
Munetaka Ueno
Hideo Matsuhara
Takashi Onaka
October 2011
Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
Publications of the Astronomical Society of Japan
63
5
1117–1138
2011PASJ...63.1117U
10.1093/pasj/63.5.1117
(online, AcuA catalog p. 153)
Linda M. French
Robert, D. Stephens
Daniel R. Coley
Lawrence H. Wasserman
Faith Vilas
Daniel La Rocca
October 2013
A Troop of Trojans: Photometry of 24 Jovian Trojan Asteroids
The Minor Planet Bulletin
40
4
198–203
1052-8091
2013MPBu...40..198F
Robert D. Stephens
Daniel R. Coley
Brian D. Warner
Linda, M. French
October 2016
Lightcurves of Jovian Trojan Asteroids from the Center for Solar System Studies: L4 Greek Camp and Spies
The Minor Planet Bulletin
43
4
323–331
1052-8091
2016MPBu...43..323S
6
Peter Veres
Robert Jedicke
Alan Fitzsimmons
Larry Denneau
Mikael Granvik
Bryce Bolin
Serge Chastel
Richard J. Wainscoat
William S. Burgett
Kenneth C. Chambers
Heather Flewelling
Nick Kaiser
Eugen A. Magnier
Jeff S. Morgan
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John L. Tonry
Christopher Waters
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Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results
Icarus
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10.1016/j.icarus.2015.08.007
1506.00762 53493339
External links
Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 )
Center for Solar System Studies (CS3)
Discovery Circumstances: Numbered Minor Planets (15001)-(20000) – Minor Planet Center
15436
2015436
15436
015436
015436
015436
Category:Named minor planets
19981110