Découverte de 2017 OF201, candidate planète naine (≈700 km) aux confins du Système solaire avec une orbite sur 25 000 ans.
https://www.pourlascience.fr/sd/astrophysique/2017-of201-une-nouvelle-planete-naine-dans-le-systeme-solaire-28020.php
#Space #Science #Astrophysics #PlutonCousine #2017OF201 #OrbitesExtrêmes #PlaneteNaine

Neuer Zwergplanet im Sonnensystem entdeckt. 2017 OF201 ist eines der fernsten sichtbaren Objekte und hat einen ungewöhnlichen Orbit. #Zwergplanet #Astronomie #2017OF201 #Sonnensystem #Kuiperguertel
https://www.scinexx.de/news/kosmos/neuer-zwergplanet-im-sonnensystem-entdeckt/

As one avenue to Planet 9 closes so another one could open, this latest object will help some theories while quash others, such is the beauty of Science.

And do not anthropomorphise Pluto, it's just a minor planet, not a sad puppy being demoted.

https://cosmiclog.com/2025/05/22/a-cousin-for-pluto-new-dwarf-planet-candidate-found/

#KuiperBelt #MinorPlanets #2017OF201 #Planet9 #Astronomy #Space

Add another potential dwarf #planet to the list for our solar system - and this one challenges claims relating to the hypothetical existence of a large world known as #PlanetX or #Planet9 ... https://cosmiclog.com/2025/05/22/a-cousin-for-pluto-new-dwarf-planet-candidate-found/ #2017OF201 #PlanetNine #Space #DwarfPlanet

Nieuwe grote dwergplaneet gevonden voorbij Pluto

De verrassend grote wereld heeft een enorme baan: ongeveer 838 keer de afstand van de Aarde tot de Zon.

De dwergplaneet gezien voorbij Pluto. Credit: NASA/JPL-Caltech; image of 2017 OF201: Sihao Cheng et al.

Er draait een nieuwe bevroren, vreemde eend in de bijt om de Zon en het is geen d

https://www.kuuke.nl/nieuwe-grote-dwergplaneet-gevonden-voorbij-pluto/

#2017OF201 #dwergplaneet #eTNO #pluto #TNO #TransNeptuniaansObject

A ~500-km-sized object has been discovered (on old images) in the far reaches of the solar system - the orbit of #2017OF201 has a semi-major axis of 880 au and an eccentricity of 0.95 and thus a perihelion at 45 au: https://minorplanetcenter.net/mpec/K25/K25K47.html and https://groups.io/g/mpml/topic/113234338#msg40620 (and see https://www.minorplanetcenter.net/iau/Sizes.html for how to covert the absolute brightness H - which is 3.55 - into a diameter).