2015 KG163

Extreme trans-Neptunian object February 2018 yes 2015 KG 163 #C2E0FF Planet nine-etnos now-new2.png The orbit of 2015 KG 163 (right side, in orange) and other extreme detached objects, along with the hypothetical Planet Nine's orbit on the right OSSOS Mauna Kea Obs. 24 May 2015 2015 KG 163 o5m52 TNOdetacheddistant yes 25 February 2023 (JD 2460000.5) 3 2.02 yr (739 days) 17 May 2015 1319 AU 40.493 AU ≈ 10 August 2022JPL Horizons Observer Location: @sun (perihelion occurs when deldot changes from negative to positive)±2 monthsperihelion Uncertainty in the perihelion date is 18 days (1-sigma) or 54 days (3-sigma) according to JPL's Small-Body Database. 679.816 AU 0.94043 17713 yr 0.014° 0.0000556 ms / day 13.994° 219.103° 32.097° 65–150 km (est. 0.04–0.20) 24.2 (discovery) 8.2 2015 KG 163 is a trans-Neptunian object from the outermost region of the Solar System, approximately 102 km mi off 2 us in diameter. It was first observed on 24 May 2015, by astronomers of the Outer Solar System Origins Survey using the Canada–France–Hawaii Telescope at Mauna Kea Observatories, Hawaii, United States. With an observation arc of 2 years, it passed perihelion around August 2022perihelion at a velocity of 6.5 km/s with respect to the Sun. 2015 KG 163 is one a small number of detached objects with perihelion distances of 30 AU or more, and semi-major axes of 250 AU or more. Such objects can not reach such orbits without some perturbing object, which leads to the speculation of Planet Nine. Its argument of perihelion is similar to that of 2013 FT 28, but its semi-major axis is larger, such that its orbit may cross that of Planet Nine. 350px|thumb|left|Closeup of current position near perihelion, passing downward from the upper left of this view left Notes References 2017-05-25 last obs. JPL Small-Body Database Browser: (2015 KG163) https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2015%20KG163 Jet Propulsion Laboratory 4 August 2022 2015 KG163 Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=2015+KG163 1 November 2017 MPEC-2017-M23 : 2015 KG163 https://minorplanetcenter.net/mpec/K17/K17M23.html Minor Planet Electronic Circular Minor Planet Center 19 June 2017 5 July 2023 JPL Horizons On-Line Ephemeris for 2015 KG163 at epoch JD 2460000.5 https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND='2015+KG163'&TABLE_TYPE='ELEMENTS'&START_TIME='JD2460000.5'&STOP_TIME='JD2460200.5'&STEP_SIZE='1y'&CENTER='@0'&OUT_UNITS='AU-D' JPL Horizons On-Line Ephemeris System Jet Propulsion Laboratory 5 July 2023 Solution using the Solar System Barycenter. Ephemeris Type: Elements and Center: @0) MPC-query: a>250 and q<30 Minor Planet Center http://minorplanetcenter.net/db_search/show_by_properties?perihelion_distance_min=30&semimajor_axis_min=250 1 November 2017 List of known trans-Neptunian objects Johnstonsarchive.net 5 September 2016 https://www.johnstonsarchive.net/astro/tnoslist.html 1 November 2017 Asteroid Size Estimator https://cneos.jpl.nasa.gov/tools/ast_size_est.html Center for Near Earth Object Studies Jet Propulsion Laboratory 5 July 2023 etal Shankman Cory OSSOS. VI. Striking Biases in the Detection of Large Semimajor Axis Trans-Neptunian Objects https://pure.qub.ac.uk/portal/en/publications/ossos-vi-striking-biases-in-the-detection-of-large-semimajor-axis-transneptunian-objects(027b7a9c-a171-42b4-9449-9355b0a255d4).html 2017 The Astronomical Journal 154 2 50 10.3847/1538-3881/aa7aed 1706.05348 2017AJ....154...50S 10150/625487 3535702 free External links 2015KG163 3775256 # # Category:Minor planet object articles (unnumbered) Category:Discoveries by OSSOS 20150524 Category:Inner Oort cloud