3317_Paris

3317 Paris

3317 Paris

Jupiter trojan asteroid

3317 Paris, provisional designation 1984 KF, is a large Jupiter trojan from the Trojan camp, approximately 119 kilometers (74 miles) in diameter. It was discovered on 26 May 1984 by American astronomer couple Carolyn and Eugene Shoemaker at Palomar Observatory in California, United States.[1] The unusual and likely spherical T-type asteroid is one of the largest Jupiter trojans and has a rotation period of 7.1 hours.[5] It was named after Trojan prince Paris from Greek mythology.[1]

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Orbit and classification

Paris is located in the L5 Lagrangian point, 60° behind Jupiter in the so-called Trojan camp.[6] It is also a non-family asteroid of the Jovian background population.[7][9]

It orbits the Sun at a distance of 4.6–5.9 AU once every 11 years and 11 months (4,359 days; semi-major axis of 5.22 AU). Its orbit has an eccentricity of 0.13 and an inclination of 28° with respect to the ecliptic.[4] The body's observation arc begins as 1963 QD at Goethe Link Observatory in August 1963, more than 20 years prior to its official discovery observation at Palomar.[1]

Physical characteristics

More information Trojan, Diameter (km) ...

In the SMASS classification, Paris is a rare T-type asteroid, while in the Bus–DeMeo classification it is a dark D-type asteroid, the most common type among the Jupiter trojans.[9] Its V–I color index of 0.95 is typical for D-type asteroids.[5]

Rotation period

Several rotational lightcurve have been obtained since November 1990, when the first photometric observations of Paris – made by Italian astronomer Stefano Mottola, using the ESO 1-metre telescope at La Silla Observatory in Chile – gave a rotation period of 7.082±0.004 hours with a brightness variation of 0.08±0.01 magnitude. In July 1998, Mottola measured an identical period with an amplitude of 0.10 at Calar Alto Observatory in Spain (U=2+/2+).[5][15]

Follow-up observations by Robert Stephens at the Center for Solar System Studies during 2016–2017 measured a period of 7.048 and 7.091 hours, each with an amplitude of 0.11 magnitude (U=3-/3-),[13][16][lower-alpha 1] superseding a period of 7.08 hours by René Roy and Federico Manzini reported in 2008 and 2009, respectively (U=2/2+).[14] The low brightness variation measured in all photometric observations is also indicative of a spherical, rather than elongated shape.[5]

Diameter and albedo

An occultation of a star by Paris was measured on 17 August 2010, and gave a major and minor occultation axis of 116.0 × 116.0 kilometers (poor fit).[9]

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Paris measures between 116.26 and 120.45 kilometers in diameter and its surface has an albedo between 0.055 and 0.0626.[10][11][12] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0625 and adopts a diameter of 116.26 kilometers from IRAS, based on an absolute magnitude of 8.3.[5]

In the catalogs of the three mentioned surveys above, Paris is the 6th, 10th and 11th largest Jupiter trojan, respectively.

More information Largest Jupiter Trojans by survey(A) (mean-diameter in kilometers; YoD: Year of Discovery), Designation ...
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Naming

This minor planet was named from Greek mythology, after prince Paris, one of the many sons of King Priam of Troy. His abduction of Helen of Troy, wife of Menelaus, gave cause to the Trojan War.[1] The official naming citation was published by the Minor Planet Center on 27 December 1985 (M.P.C. 10312).[19]

In culture

  • In Schlock Mercenary several characters are held hostage by the mob in some corporate offices located on 3317 Paris.[20]

Notes

  1. Lightcurve plots of (3317) Paris from Feb 2016, Jan 2017 by Robert Stephens at the Center for Solar System Studies (U81). Quality code is 3/3- (lightcurve rating at CS3). Summary figures at the LCDB and CS3.

References

  1. [1]
    "3317 Paris (1984 KF)". Minor Planet Center. Retrieved 5 March 2018.
  2. [2]
    Classical pronunciation. /ˈpærɪs/ is the city.
  3. [3]
    Noah Webster (1884) A Practical Dictionary of the English Language
  4. [4]
    "JPL Small-Body Database Browser: 3317 Paris (1984 KF)" (2018-01-23 last obs.). Jet Propulsion Laboratory. Retrieved 5 March 2018.
  5. [5]
    "LCDB Data for (3317) Paris". Asteroid Lightcurve Database (LCDB). Retrieved 5 March 2018.
  6. [6]
    "List of Jupiter Trojans". Minor Planet Center. 4 October 2017. Retrieved 5 March 2018.
  7. [7]
    "Asteroid (3317) Paris – Proper elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 5 June 2018.
  8. [8]
    JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive.)
  9. [9]
    "Asteroid 3317 Paris". Small Bodies Data Ferret. Retrieved 14 June 2018.
  10. [10]
    Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 15 June 2018.
  11. [11]
    Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy". The Astrophysical Journal. 759 (1): 10. arXiv:1209.1549. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. S2CID 119101711. (online catalog)
  12. [12]
    Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  13. [13]
    Stephens, Robert D.; Coley, Daniel R.; French, Linda M. (July 2016). "A Report from the L5 Trojan Camp - Lightcurves of Jovian Trojan Asteroids from the Center for Solar System Studies". The Minor Planet Bulletin. 43 (3): 265–270. Bibcode:2016MPBu...43..265S. ISSN 1052-8091.
  14. [14]
    Behrend, Raoul. "Asteroids and comets rotation curves – (3317) Paris". Geneva Observatory. Retrieved 5 March 2018.
  15. [15]
    Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; et al. (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects". The Astronomical Journal. 141 (5): 32. Bibcode:2011AJ....141..170M. doi:10.1088/0004-6256/141/5/170.
  16. [16]
    Stephens, Robert D.; Coley, Daniel R. (July 2017). "Lightcurve Analysis of Trojan Asteroids at the Center for Solar System Studies 2017 January - March". The Minor Planet Bulletin. 44 (3): 252–257. Bibcode:2017MPBu...44..252S. ISSN 1052-8091. PMC 7243922. PMID 32455404.
  17. [17]
    Chatelain, Joseph P.; Henry, Todd J.; French, Linda M.; Winters, Jennifer G.; Trilling, David E. (June 2016). "Photometric colors of the brightest members of the Jupiter L5 Trojan cloud". Icarus. 271: 158–169. Bibcode:2016Icar..271..158C. doi:10.1016/j.icarus.2016.01.026.
  18. [18]
    Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID 53493339.
  19. [19]
    "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 March 2018.
  20. [20]
    Tayler, Howard (20 July 2010). "Schlock Mercenary archives - Tuesday, July 20, 2010". Schlock Mercenary. Archived from the original on 24 July 2010. Retrieved 27 July 2010.
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