5476 Mulius
{{Use dmy dates|date=November 2021}}
{{Infobox planet
| minorplanet = yes
| name = 5476 Mulius
| background = #C2FFFF
| image =
| image_size =
| caption =
| discoverer = S. J. Bus
| discovery_site = CTIO
| discovered = 2 October 1989
| mpc_name = (5476) Mulius
| alt_names = {{mp|1989 TO|11}}{{·}}{{mp|1990 UW|13}}
| pronounced =
| named_after = Mulius
{{small|(Greek mythology)}}
| mp_category = Jupiter trojan
{{nowrap|Trojan{{·}}background}}
| epoch = 23 March 2018 (JD 2458200.5)
| uncertainty = 0
| observation_arc = 65.65 yr (23,980 d)
| aphelion = 5.4814 AU
| perihelion = 4.7357 AU
| semimajor = 5.1086 AU
| eccentricity = 0.0730
| period = 11.55 yr (4,217 d)
| mean_anomaly = 235.27°
| mean_motion = {{Deg2DMS|0.0854|sup=ms}} / day
| inclination = 13.704°
| asc_node = 198.55°
| arg_peri = 95.356°
| jupiter_moid = 0.1169 AU
| tisserand = 2.9390
| mean_diameter = {{val|35.10|0.47|u=km}}
| rotation = {{val|5.780|0.001|ul=h}}
| albedo = {{val|0.099|0.019}}
| spectral_type = C {{small|(assumed)}}
}}
5476 Mulius, provisional designation: {{mp|1989 TO|11}} is a mid-sized Jupiter trojan from the Trojan camp, approximately {{convert|35|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 2 October 1989, by American astronomer Schelte Bus at the Cerro Tololo Inter-American Observatory in Chile. The dark Jovian asteroid has a rotation period of 5.8 hours. It was numbered in March 1993. In November 2021, it was named after the Trojan warrior Mulius, who was killed by Achilles during the Trojan War, according to Greek mythology.
Classification and orbit
Mulius is a Jupiter trojan which stays in a 1:1 orbital resonance with Jupiter. It is located in the trailering Trojan camp at the Gas Giant's {{L5}} Lagrangian point, 60° behind its orbit {{crossreference|(see Trojans in astronomy)}}. It is also a non-family asteroid of the Jovian background population.
It orbits the Sun at a distance of 4.7–5.5 AU once every 11 years and 7 months (4,217 days; semi-major axis of 5.11 AU). Its orbit has an eccentricity of 0.07 and an inclination of 14° with respect to the ecliptic. The asteroid was first observed at Palomar Observatory in August 1952. One year later, the body's observation arc begins at Palomar in August 1953, or more than 36 years prior to its official discovery observation at Cerro Tololo.
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 8 March 1993 ({{small|M.P.C. 21774}}). On 29 November 2021, IAU's Working Group for Small Bodies Nomenclature {{MoMP|5476|named}} it from Greek mythology after Trojan warrior Mulius, who was killed during the Trojan War by Achilles who drove his javelin through one ear and out the other of Mulius' head.
Physical characteristics
Mulius is an assumed C-type asteroid. Jovian asteroids are typically D-types, with the remainder being mostly carbonaceous C- and primitive P-type asteroids.
= Rotation period =
Four nights of photometric observations of this asteroid were used to build a lightcurve showing a rotation period of {{val|5.780|0.001}} hours with a brightness variation of 0.30 magnitude. The well-defined lightcurve was obtained during February 1994 by Stefano Mottola and Anders Erikson using the ESO 1-metre telescope at the La Silla Observatory in Chile ({{small|U=3}}).
= Diameter and albedo =
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 35.1 kilometers in diameter and its surface has an albedo of 0.099, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a larger diameter of 42.2 kilometers.
{{Largest Jupiter trojans}}
References
{{reflist|30em|refs=
|type = 2018-04-20 last obs.
|title = JPL Small-Body Database Browser: 5476 Mulius
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005476
|publisher = Jet Propulsion Laboratory
|access-date= 22 June 2018}}
|title = (5476) Mulius
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=5476
|access-date= 22 June 2018}}
|title = List of Jupiter Trojans
|work = Minor Planet Center
|first3 = V. |last3 = Carruba
|date = 1 June 2018
|url = https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html
|access-date= 22 June 2018}}
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|access-date= 22 June 2018}}
|title = WGSBN Bulletin Archive
|work = Working Group for Small Bodies Nomenclature
|date = 29 November 2021
|url = https://www.wgsbn-iau.org/files/Bulletins/index.html
|access-date= 29 November 2021}} ([https://www.wgsbn-iau.org/files/Bulletins/V001/WGSBNBull_V001_012.pdf Bulletin #12])
|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=05476 online catalog])
|title = Asteroid (5476) 1989 TO11 – Proper Elements
|publisher = AstDyS-2, Asteroids – Dynamic Site
|url = https://newton.spacedys.com/astdys/index.php?n=5476&pc=1.1.6
|access-date= 22 June 2018}}
|title = LCDB Data for (5476)
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=5476%7C
|access-date= 22 June 2018}}
|display-authors = 6
|first1 = Stefano |last1 = Mottola
|first2 = Mario |last2 = Di Martino
|first3 = Anders |last3 = Erikson
|first4 = Maria |last4 = Gonano-Beurer
|first5 = Albino |last5 = Carbognani
|first6 = Uri |last6 = Carsenty
|first7 = Gerhard |last7 = Hahn
|first8 = Hans-Josef |last8 = Schober
|first9 = Felix |last9 = Lahulla
|first10 = Marco |last10 = Delbò
|first11 = Claes-Ingvar |last11 = Lagerkvist
|date = May 2011
|title = Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects
|journal = The Astronomical Journal
|volume = 141
|issue = 5
|page = 32
|bibcode = 2011AJ....141..170M
|doi = 10.1088/0004-6256/141/5/170
|doi-access = free}}
}}
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 }})
- [https://www.minorplanetcenter.net/iau/lists/NumberedMPs005001.html Discovery Circumstances: Numbered Minor Planets (5001)-(10000)] – Minor Planet Center
- [https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=5476 Asteroid (5476) 1989 TO11] at the Small Bodies Data Ferret
- {{AstDys|5476}}
- {{JPL small body}}
{{Minor planets navigator |5475 Hanskennedy |number=5476 |5477 Holmes}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Mulius}}