„Feltételezett kilencedik bolygó a Naprendszerben” változatai közötti eltérés

A kilencedik bolygó pályája erősen elnyújtott, elliptikus, keringési periódusa 10–20&nbsp;000 év. Távolsága a Naptól a legközelebbi pozíciójában 200-700 [[csillagászati egység]] (CsE) között lehet. Tengelyferdesége 30 (± 20) fok.<ref name="findplanet9">{{Cite web|url = http://www.findplanetnine.com/p/blog-page.html|title = Where is Planet Nine?|work = findplanetnine.com}}</ref><ref name="Nature2016">{{Cite journal|title = Evidence grows for giant planet on fringes of Solar System|date = January 20, 2016|doi = 10.1038/529266a|journal = Nature|first = Alexandra|last = Witze}}</ref><ref name="CaltechJan2016">{{Cite web|url = https://www.caltech.edu/news/caltech-researchers-find-evidence-real-ninth-planet-49523|title = Caltech Researchers Find Evidence of a Real Ninth Planet|date = January 20, 2016|accessdate = January 20, 2016|last = Fesenmaier|first = Kimm|publisher = California Institute of Technology}}</ref> Legnagyobb naptávolsága akár 1200 CsE is lehet.<ref name="NatGeo201601"><cite class="citation magazine">Drake, Nadia (January 20, 2016). </cite></ref><ref name="slate">{{Cite news|last1 = Plait|first1 = Phil|date = January 21, 2016|accessdate = January 22, 2016|work = [[Slate (magazine)|Slate]]|url = http://www.slate.com/blogs/bad_astronomy/2016/01/21/evidence_found_of_a_possible_planet_in_the_outer_solar_system.html|title = More (and Best Yet) Evidence That Another Planet Lurks in the Dark Depths of Our Solar System|quote = The best fit was for a planet that never got closer than 200 AU from the Sun (Neptune is roughly 30 AU out from the Sun). The orbit of this planet would be highly elliptical, but it’s not clear how elliptical; that’s less well constrained. At its most distant, it could be between 500 and 1,200 AU out. The most likely mass of the planet is about 10 times Earth’s mass}}</ref>  <span class="cx-segment" data-segmentid="163"></span>