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(248835) 2006 SX368, provisional designation: 2006 SX368, is a centaur, approximately 75 kilometers (47 miles) in diameter, orbiting in the outer Solar System between Saturn and Neptune. It was discovered on 16 September 2006, by American astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica at Apache Point Observatory in Sunspot, New Mexico.[3]

(248835) 2006 SX368
Discovery[1]
Discovered byA. C. Becker
A. W. Puckett
J. Kubica
Discovery siteApache Point Obs.
Discovery date16 September 2006
Designations
MPC designation
(248835) 2006 SX368
Alternative designations
2006 SX368
Minor planet category
centaur[1][2] · distant[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 3[1] · 1[3]
Observation arc5.91 yr (2,160 days)
Aphelion32.049 AU
Perihelion11.945 AU
Semi-major axis
21.997 AU
Eccentricity0.4570
Orbital period (sidereal)
103.17 yr (37,683 d)
Mean anomaly
25.503°
Mean motion
0° 0m 34.56s / day
Inclination36.325°
Longitude of ascending node
280.00°
Argument of perihelion
70.489°
TJupiter3.183
Physical characteristics
Mean diameter
76 km[2][4]
78.44±22.63 km[5]
Geometric albedo
0.046±0.018[5]
0.052[2][4]
Spectral type
BR[2]
B–R = 1.27[2]
Absolute magnitude (H)
9.5[1]

    Orbit and classification


    Centaurs have short dynamical lives due to strong interactions with the giant planets. The orbit of 2006 SX368 is unusually eccentric — near the perihelion it comes under influence of Uranus, while at the aphelion it travels slightly beyond the orbit of Neptune.[4]

    It orbits the Sun at a distance of 11.9–32.0 AU once every 103 years and 2 months (37,683 days; semi-major axis of 22.0 AU). Its orbit has an eccentricity of 0.46 and an inclination of 36° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Apache Point in September 2006.[3]


    Physical characteristics


    In 2010, thermal flux from 2006 SX368 in the far-infrared was measured by the Herschel Space Telescope. As a result, its equivalent size was estimated to lie within a range from 70 kilometres (43 mi) to 80 kilometres (50 mi).[4]


    See also



    References


    1. "JPL Small-Body Database Browser: 248835 (2006 SX368)" (2012-08-15 last obs.). Jet Propulsion Laboratory. Retrieved 16 January 2018.
    2. Johnston, Wm. Robert (15 October 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 16 January 2018.
    3. "248835 (2006 SX368)". Minor Planet Center. Retrieved 16 January 2018.
    4. Müller, T. G.; Lellouch, E.; Stansberry, J.; Kiss, C.; Santos-Sanz, P.; Vilenius, E.; et al. (July 2010). "TNOs are Cool: A survey of the trans-Neptunian region. I. Results from the Herschel science demonstration phase (SDP)". Astronomy and Astrophysics. 518: 5. arXiv:1005.2923. Bibcode:2010A&A...518L.146M. doi:10.1051/0004-6361/201014683. S2CID 118635387.
    5. Bauer, James M.; Grav, Tommy; Blauvelt, Erin; Mainzer, A. K.; Masiero, Joseph R.; Stevenson, Rachel; et al. (August 2013). "Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations". The Astrophysical Journal. 773 (1): 11. arXiv:1306.1862. Bibcode:2013ApJ...773...22B. doi:10.1088/0004-637X/773/1/22. S2CID 51139703.




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