(84922) 2003 VS2

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(84922) 2003 VS2
Sidereal rotation period
7.41±0.02 h[9]
0.134±0.01[5]
Temperature≈44 K
19.7[10]
4.11±0.38[8]

(84922) 2003 VS2 is a

Near Earth Asteroid Tracking program on 14 November 2003.[1] Like Pluto, it is in a 2:3 orbital resonance with Neptune[3][4] and is thus a plutino. Analysis of light-curve suggests that it is not a dwarf planet.[11]

Orbit and rotation

Like Pluto, (84922) 2003 VS2 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.[2]

(84922) 2003 VS2 has a significant light-curve amplitude of 0.21±0.01. The most likely value of the rotation period is 7.41±0.02 h.[9]

Physical characteristics

(84922) 2003 VS2 has a moderately red surface with a moderately red color indices B−V=0.93, V−R=0.59.[12] Its geometrical albedo is about 0.13.[6]

In 2007, its diameter was initially estimated by the

stellar occultations that occurred in 2013 and 2014;[6] the light curve derived from the occultations suggests that this plutino is not in hydrostatic equilibrium and hence not a dwarf planet.[14] The dimensions of 2003 VS2 are estimated at 627.6 km × 531 km × 494.6 km, with a volume-equivalent diameter 548.3+29.5
−44.6 km.[6] 2003 VS2 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,[15]
gives a mass estimate of about 7.5×1019 kg.

2003 VS2 (apparent magnitude 19.8) as viewed with a 24" telescope
Colours of the TNOs plus Phoebe, Pholus, Triton and Mars. Mars and Triton are not to scale.

See also

  • Sedna, another large trans-Neptunian object discovered the same day (14 November 2003)

References

  1. ^ a b Marsden, Brian G. (16 November 2003). "MPEC 2003-W02 : 2003 VS2". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 6 January 2010.
  2. ^ a b c "JPL Small-Body Database Browser: 84922 (2003 VS2)" (2008-02-05 last obs). Retrieved 7 April 2016.
  3. ^
    Buie, Marc W. (5 February 2008). "Orbit Fit and Astrometric record for 84922"
    . SwRI (Space Science Department). Retrieved 23 July 2008.
  4. ^ a b "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 21 December 2006. Archived from the original on 28 August 2008. Retrieved 23 July 2008.
  5. ^
    S2CID 249009658
    .
  6. ^
    S2CID 201070151
    .
  7. ^
    S2CID 119253817
    .
  8. ^
    S2CID 53621071
    .
  9. ^
    S2CID 56247384
    .
  10. ^ "AstDys (84922) 2003VS2 Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 27 March 2012. Retrieved 7 December 2009.
  11. doi:10.1017/S1743921310001717. (Dwarf Planet & Plutoid Headquarters)
  12. ^ Tegler, Stephen C. (1 February 2007). "Kuiper Belt Object Magnitudes and Surface Colors". Archived from the original on 1 September 2006. Retrieved 30 December 2009.
  13. ISBN 978-0-8165-2755-7
    .
  14. Bibcode:2019EPSC...13..435B
    .
  15. S2CID 126574999
    .

External links


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