2002 GB32

2002 GB32, is a trans-Neptunian object from the scattered disc in the outermost region of the Solar System, approximately 122 kilometers in diameter.[3][4] It was first observed on 7 April 2002, by American astronomer Marc Buie at Cerro Tololo Observatory in Chile.[1][2]

2002 GB32
2002 GB32 is seen lower right in blue with hypothetical Planet Nine in green
Discovery [1]
Discovered byM. W. Buie [2]
Discovery siteCerro Tololo Obs.
Discovery date7 April 2002
Designations
2002 GB32
TNO [3] · SDO [2][4]
distant [1] · detached
Orbital characteristics [3]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 3
Observation arc12.96 yr (4,733 days)
Aphelion402.66 AU
Perihelion35.347 AU
219.01 AU
Eccentricity0.8386
3241.10 yr (1,183,810 days)
0.3780°
0° 0m 1.08s / day
Inclination14.176°
176.99°
37.158°
Physical characteristics
Dimensions122 km (calculated)[4]
0.09 (assumed)[4]
7.8[3]

    Description

    2002 GB32 belongs to a small number of detached objects with perihelion distances of 30 AU or more, and semi-major axis of 200 AU or more.[5] Such objects can not reach such orbits without some perturbing object, which lead to the speculation of planet nine.

    This minor planet orbits the Sun at a distance of 35.3–402.7 AU once every 3,241 years and 1 month (1,183,810 days). Its orbit has an eccentricity of 0.84 and an inclination of 14° with respect to the ecliptic.[3]

    Based on an absolute magnitude of 7.8 and an assumed albedo of 0.09, the Johnston's Archive calculated a mean-diameter of 122 kilometers.[4]

    See also

    References
    1. "2002 GB32". Minor Planet Center. Retrieved 17 October 2017.
    2. "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 14 October 2017.
    3. "JPL Small-Body Database Browser: (2002 GB32)" (2015-03-23 last obs.). Jet Propulsion Laboratory. Retrieved 17 October 2017.
    4. "List of known Trans-Neptunian Objects". Johnston's Archive. Retrieved 14 October 2017.
    5. minorplanetcenter.net: q>30, a>200

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