plutino

From Plut(o) +‎ -ino (“diminutive suffix”), meaning "little Pluto" (compare neutrino); coined by David C. Jewitt, et al.

plutino (plural plutinos)

1. (astronomy) Any planetoid in the Kuiper belt whose orbit, like that of Pluto, has a resonance of 3:2 with that of Neptune.
   • 2010, Romina P. Di Sisto, Adrián Brunini, Gonzalo C. de Elía, “The contribution of plutinos to the Centaur population”, in Julio A. Fernández, Daniela Lazzaro, Dina Prialnik, Rita Schulz, editors, Icy Bodies of the Solar System: IAU Symposium S263, Cambridge University Press, page 89:

     We present a study of the dynamical evolution of plutinos recently escaped from the resonance through numerical simulations. It was shown in previous works the existence of weakly chaotic orbits in the plutino population that diffuse very slowly finally diving into a strong chaotic region.

   • 2018, C Sivaram, Kenath Arun, Kiren O V, Current Trends in Astrobiology, Cambridge Scholars Publishing, page 39:

     This is dubbed a 3:2 resonance (with Neptune), Pluto being the largest Plutino.
     About one fourth of the KBOs are Plutinos. Plutinos may be debris from the collision of another KBO with Pluto, resulting in the formation of Pluto's largest moon, Charon.

• Other resonances are possible, but the 3:2 resonance, being of low order, is the strongest and most stable, and consequently corresponds to the largest such grouping of Kuiper belt planetoids.
• Saying that an object's orbit has the same resonance with Neptune's as Pluto's orbit does is the same as saying that the average distance from the sun is the same as Pluto's (within a margin of error).

• cubewano
• KBO, EKO, TNO
• kuiperoid

• OED 2006

• Resonant trans-Neptunian object on Wikipedia.Wikipedia

plutino m (plural plutini)

1. (astronomy) plutino

• plutoni