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Neptune Trojans and Plutinos: colors, sizes, dynamics, and their possible colli...
Almeida, Álvaro. J. C.; Peixinho, N.; Correia, A. C. M.Neptune Trojans and Plutinos are two subpopulations of trans-Neptunian objects located in the 1:1 and the 3:2 mean motion resonances with Neptune, respectively, and therefore protected from close encounters with the planet. However, the orbits of these two kinds of objects may cross very often, allowing a higher collisional rate between them than with other kinds of trans-Neptunian objects, and a consequent siz...
Low phase angle effects in photometry of trans-neptunian objects: 20000 Varuna ...
Belskaya, I.N.; Ortiz, J.L.; Rousselot, P.; Ivanova, V.; Borisov, G.; Shevchenko, V.G.; Peixinho, N.We present the results of photometric observations of trans-neptunian object 20000 Varuna, which were obtained during 7 nights in November 2004-February 2005. The analysis of new and available photometric observations of Varuna reveals a pronounced opposition surge at phase angles less than 0.1 deg with amplitude of 0.2 mag relatively to the extrapolation of the linear part of magnitude-phase dependence to zero...
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