Neha Patil (Editor)

(84922) 2003 VS2

Updated on
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit
Discovered by  NEAT (644)
MPC designation  (84922) 2003 VS2
Minor planet category  Plutino
Discovered  14 November 2003
Argument of perihelion  114.317°
Orbits  Sun
Discovery date  14 November 2003
Alternative names  none
Observation arc  8830 days (24.18 yr)
Inclination  14.777°
Mean anomaly  15.535°
Discovery site  Palomar Observatory
(84922) 2003 VS2 httpsuploadwikimediaorgwikipediacommonsthu

Discoverer  Near-Earth Asteroid Tracking

(84922) 2003 VS2 is a trans-Neptunian object discovered by the Near Earth Asteroid Tracking program on November 14, 2003. Like Pluto, it is in a 2:3 orbital resonance with Neptune, giving it the orbital properties of a plutino. Mike Brown's website lists it as highly likely a dwarf planet. However, Brown assumed that VS2 was much bigger than it really is, and the light-curve analysis has questioned whether it would truly be in the hydrostatic equilibrium.

Contents

Orbit and rotation

Like Pluto, (84922) 2003 VS2 is locked in the 3:2 mean-motion resonance with Neptune, although its orbit is significantly less eccentric than Pluto's. It also has slightly smaller orbital inclination.

(84922) 2003 VS2 has a significant light-curve amplitude of 6999210000000000000♠0.21±0.01. The most likely value of the rotation period is 7004266760000000000♠7.41±0.02 h.

Physical characteristics

(84922) 2003 VS2 has a moderately red surface with a moderately red color indexes B−V=0.93, V−R=0.59. Its geometrical albedo is about 15%.

In 2007, its diameter was initially estimated by the Spitzer Space Telescope at 7005725000000000000♠725±200 km. However, in 2012, this was reduced to 7005523000000000000♠523.0+35.1
−34.4
 km
after new Herschel Space Telescope observations. The latter measurement is considered more reliable. Assuming a Pluto-like density of 2 g/cm3, one can obtain a mass estimate of about 1.5×1020 kg.

References

(84922) 2003 VS2 Wikipedia