Astronomy:2002 GB32
 2002 GB32 is seen lower right in blue with hypothetical Planet Nine in green | |
| Discovery[2] | |
|---|---|
| Discovered by | M. W. Buie[1] |
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 7 April 2002 |
| Designations | |
| 2002 GB32 | |
| Minor planet category | TNO[3] · SDO[1][4] distant[2] · detached |
| Orbital characteristics[3] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 12.96 yr (4,733 days) |
| |{{{apsis}}}|helion}} | 402.66 AU |
| |{{{apsis}}}|helion}} | 35.347 AU |
| 219.01 AU | |
| Eccentricity | 0.8386 |
| Orbital period | 3241.10 yr (1,183,810 days) |
| Mean anomaly | 0.3780° |
| Mean motion | 0° 0m 1.08s / day |
| Inclination | 14.176° |
| Longitude of ascending node | 176.99° |
| 37.158° | |
| Physical characteristics | |
| Dimensions | 122 km (calculated)[4] |
| Geometric albedo | 0.09 (assumed)[4] |
| Absolute magnitude (H) | 7.8[3] |
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.[2][1]
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
- ↑ 1.0 1.1 1.2 "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. http://www.minorplanetcenter.org/iau/lists/Centaurs.html. Retrieved 14 October 2017.
- ↑ 2.0 2.1 2.2 "2002 GB32". Minor Planet Center. http://www.minorplanetcenter.net/db_search/show_object?object_id=2002+GB32. Retrieved 17 October 2017.
- ↑ 3.0 3.1 3.2 3.3 3.4 "JPL Small-Body Database Browser: (2002 GB32)". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3126196. Retrieved 17 October 2017.
- ↑ 4.0 4.1 4.2 4.3 4.4 "List of known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 14 October 2017.
- ↑ minorplanetcenter.net: q>30, a>200
External links
- List Of Centaurs and Scattered-Disk Objects, Minor Planet Center
- List of known Trans-Neptunian Objects, Johnston's Archive
- 2002 GB32 at AstDyS-2, Asteroids—Dynamic Site
- 2002 GB32 at the JPL Small-Body Database
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