(84922) 2003 VS2 explained

Minorplanet:yes
Background:
  1. C2E0FF
Discovery Ref:[1]
Discoverer:NEAT (644)
Discovered:14 November 2003
Earliest Precovery Date:17 September 1991
Alt Names:none
Mp Category:Plutino[2]
Orbit Ref:[3] [4]
Epoch:13 January 2016 (JD 2457400.5)
Semimajor:39.435AU
Perihelion:36.456AU
Aphelion:42.413abbr=onNaNabbr=on
Eccentricity:0.075539
Period:247.64 yr (90451.3 d)
Inclination:14.777°
Asc Node:302.792°
Arg Peri:114.317°
Dimensions: ×  ×  km
Magnitude:19.7[5]
Note:no
Mean Motion: / day
Rotation:[6]
Observation Arc:8830 days (24.18 yr)
Uncertainty:3

is a trans-Neptunian object discovered by the Near Earth Asteroid Tracking program on 14 November 2003.[1] Like Pluto, it is in a 2:3 orbital resonance with Neptune[4] [2] and is thus a plutino. Analysis of light-curve suggests that it is not a dwarf planet.[7]

Orbit and rotation

Like Pluto, is locked in the 3:2 mean-motion resonance with Neptune, although its orbit is both less inclined and significantly less eccentric than Pluto's.[3]

has a significant light-curve amplitude of . The most likely value of the rotation period is .[8]

Physical characteristics

has a moderately red surface with a moderately red color indices B−V=0.93, V−R=0.59.[9] Its geometrical albedo is about 0.13.

In 2007, its diameter was initially estimated by the Spitzer Space Telescope at .[10] However, in 2012, this was reduced to after new Herschel Space Telescope observations.[11] In 2019, was found to be ellipsoidal in shape based on stellar occultations that occurred in 2013 and 2014;[12] the light curve derived from the occultations suggests that this plutino is not in hydrostatic equilibrium and hence not a dwarf planet.[13] The dimensions of are estimated at, with a volume-equivalent diameter .[12] has no known satellite that can be used to directly determine its mass, but assuming a density of 1 g/cm3, typical of mid size TNO's,[14] gives a mass estimate of about 7.5 kg.

See also

External links

Notes and References

  1. Web site: 2003-11-16 . MPEC 2003-W02 : 2003 VS2 . Brian G. . Marsden . IAU Minor Planet Center . Harvard-Smithsonian Center for Astrophysics . 2010-01-06.
  2. Web site: 2006-12-21 . MPEC 2006-X45 : Distant Minor Planets . Minor Planet Center & Tamkin Foundation Computer Network . 2008-07-23. https://web.archive.org/web/20080828191100/http://cfa-www.harvard.edu/iau/mpec/K06/K06X45.html. 28 August 2008.
  3. Web site: 2008-02-05 last obs . JPL Small-Body Database Browser: 84922 (2003 VS2) . 7 April 2016.
  4. Web site: Marc W. Buie . Marc W. . Buie . 2008-02-05 . Orbit Fit and Astrometric record for 84922 . SwRI (Space Science Department) . 2008-07-23.
  5. Web site: AstDys (84922) 2003VS2 Ephemerides . Department of Mathematics, University of Pisa, Italy . 2009-12-07 . https://web.archive.org/web/20120327080512/http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=84922 . 2012-03-27 . dead .
  6. "TNOs are Cool": A survey of the trans-Neptunian region XII. Thermal light curves of Haumea, and with Herschel/PACS. P. . Santos-Sanz. E. . Lellouch. O. . Groussin. P. . Lacerda. T.G. . Muller. J.L. . Ortiz. C. . Kiss. E. . Vilenius. J. . Stansberry. R. . Duffard. S. . Fornasier. L. . Jorda. A. . Thirouin. 604. A95. 19. Astronomy & Astrophysics. 10.1051/0004-6361/201630354. 1705.09117. 2017A&A...604A..95S. August 2017. 53621071 .
  7. Tancredi . Gonzalo . Physical and dynamical characteristics of icy "dwarf planets" (plutoids) . Proceedings of the International Astronomical Union Symposium S263 . 5 . 173–185 . 2009 . 10.1017/S1743921310001717 . 2010IAUS..263..173T. free . (Dwarf Planet & Plutoid Headquarters)
  8. 10.1086/519072. 2007AJ....134..787S. 0704.1636. Light Curves of Dwarf Plutonian Planets and other Large Kuiper Belt Objects: Their Rotations, Phase Functions, and Absolute Magnitudes. The Astronomical Journal. 134. 2. 787–798. August 2007. Sheppard . Scott S. . 56247384.
  9. Web site: Kuiper Belt Object Magnitudes and Surface Colors. 2009-12-30. Tegler. Stephen C.. 2007-02-01. dead. https://web.archive.org/web/20060901063349/http://www.physics.nau.edu/~tegler/research/survey.htm. 2006-09-01.
  10. Book: The Solar System Beyond Neptune . Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope . John. Stansberry . Will. Grundy . Mike. Brown . Dale. Cruikshank . John. Spencer . David. Trilling . Jean-Luc. Margot . University of Arizona press . http://www.lpi.usra.edu/books/ssbn2008/7017.pdf. astro-ph/0702538 . M. Antonietta. Barucci. Hermann. Boehnhardt. Dale P.. Cruikshank. 2008. 978-0-8165-2755-7. 161–179. 2008ssbn.book..161S .
  11. Mommert . Michael. Harris . A. W. . Kiss . C. . Pál . A. . Santos-Sanz . P. . Stansberry . J. . Delsanti . A. . Vilenius . E. . Müller . T. G. . N. . Peixinho. E. . Lellouch. N. . Szalai. F. . Henry. R. . Duffard. S. . Fornasier. P. . Hartogh. M. . Mueller. J. L. . Ortiz. S. . Protopapa. M. . Rengel. A. . Thirouin. TNOs are cool: A survey of the trans-Neptunian region—V. Physical characterization of 18 Plutinos using Herschel-PACS observations. 10.1051/0004-6361/201118562 . . 541 . A93 . May 2012. 2012A&A...541A..93M . 1202.3657 . 119253817.
  12. The trans-Neptunian object (84922) through stellar occultations. Gustavo . Benedetti-Rossi. P. . Santos-Sanz . J. L. . Ortiz. M. . Assafin . B. . Sicardy . N. . Morales. The Astronomical Journal. 158. 4. 10.3847/1538-3881/ab3b05. 1908.06645. 2019. 201070151 . free .
  13. 2019EPSC...13..435B. Three Stellar Occultations by the Plutino Object (84922) 2003 VS2. Benedetti-Rossi. Gustavo. Santos-Sanz. Pablo. Ortiz. Jose Luis. Assafin. Marcelo. Sicardy. Bruno. Vieira-Martins. Roberto. Braga-Ribas. Felipe. Epsc-DPS Joint Meeting 2019. 2019. 2019. EPSC-DPS2019-435.
  14. Grundy. W.M.. Noll. K.S.. Buie. M.W.. Benecchi. S.D.. Ragozzine. D.. Roe. H.G.. 2019. The mutual orbit, mass, and density of transneptunian binary Gǃkúnǁ'hòmdímà (229762 2007 UK126). Icarus. en. 334. 30–38. 10.1016/j.icarus.2018.12.037. 2019Icar..334...30G. 126574999 .

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