Editing Pluto (section)

=== Quasi-satellite ===
In 2012, it was calculated that [[15810 Arawn]] could be a [[quasi-satellite]] of Pluto, a specific type of co-orbital configuration.<ref name="quasi" /> According to the calculations, the object would be a quasi-satellite of Pluto for about 350,000 years out of every two-million-year period.<ref name="quasi" /><ref name="S&T" /> Measurements made by the ''New Horizons'' spacecraft in 2015 made it possible to calculate the orbit of Arawn more accurately,<ref name="2016maynasa">{{cite web|title=New Horizons Collects First Science on a Post-Pluto Object|url=http://www.nasa.gov/feature/new-horizons-collects-first-science-on-a-post-pluto-object|publisher=NASA|date=May 13, 2016|access-date=June 5, 2016|archive-date=June 7, 2016|archive-url=https://web.archive.org/web/20160607150433/http://www.nasa.gov/feature/new-horizons-collects-first-science-on-a-post-pluto-object/|url-status=dead}}</ref> and confirmed the earlier ones.<ref name="analemma">{{cite journal |title=The analemma criterion: accidental quasi-satellites are indeed true quasi-satellites |first1=Carlos |last1=de la Fuente Marcos |last2=de la Fuente Marcos |first2=Raúl |journal=[[Monthly Notices of the Royal Astronomical Society]] |date=2016 |volume=462 |issue=3 |pages=3344–3349 |arxiv=1607.06686 |doi=10.1093/mnras/stw1833 |doi-access=free |bibcode=2016MNRAS.462.3344D|s2cid=119284843 }}</ref> However, it is not agreed upon among astronomers whether Arawn should be classified as a quasi-satellite of Pluto based on its orbital dynamics, since its orbit is primarily controlled by Neptune with only occasional perturbations by Pluto.<ref name="porter_et_al_2016">{{cite journal |title=The First High-phase Observations of a KBO: New Horizons Imaging of (15810) 1994 JR1 from the Kuiper Belt |first=Simon B. |last=Porter |display-authors=etal |journal=[[The Astrophysical Journal Letters]] |volume=828 |issue=2 |pages=L15 |date=2016 |arxiv=1605.05376 |bibcode=2016ApJ...828L..15P |doi=10.3847/2041-8205/828/2/L15|s2cid=54507506 |doi-access=free }}</ref><ref name="2016maynasa" /><ref name=analemma />