Results 121 to 130 of about 940 (210)

Irregular Moons Possibly Injected from the Outer Solar System by a Stellar Flyby

The Astrophysical Journal Letters
The irregular moons orbit the giant planets on distant, inclined, and eccentric trajectories, in sharp contrast with the coplanar and quasicircular orbits of the regular moons.
Susanne Pfalzner, Amith Govind, Frank W. Wagner   +2 more
doaj   +1 more source

Short-term variability of 10 trans-Neptunian objects

, 2012
We present our latest results about the short-term variability of trans-Neptunian objects (TNOs). We performed broad-band CCD photometric observations using several telescopes in Spain and Chile.
Morales Palomino, Nicolás, Duffard, René, Thirouin, Audrey, Pravec, Petr, Ortiz Moreno, José Luis, Campo Bagatin, Adriano, Hainaut, Olivier   +6 more
core   +1 more source

Long-term Dynamical Stability in the Outer Solar System. II. Detailed Secular Evolution of Four Large Regular and Resonant Trans-Neptunian Objects

The Astronomical Journal
The long-term evolution of the outer solar system is subject to the influence of the giant planets, however, perturbations from other massive bodies located in the region imprint secular signatures, which are discernible in long-term simulations. In this
Marco A. Muñoz-Gutiérrez, Antonio Peimbert, Angeles Pérez-Villegas   +2 more
doaj   +1 more source

Uranus’s Influence on Neptune’s Exterior Mean-motion Resonances

The Planetary Science Journal
Neptune’s external mean-motion resonances play an important role in sculpting the observed population of trans-Neptunian objects (TNOs). The population of scattering TNOs is known to “stick” to Neptune's resonances while evolving in semimajor axis ( a ),
Severance Graham, Kathryn Volk
doaj   +1 more source

Discovery of two distinct polarimetric behaviours of trans-Neptunian objects

, 2008
Context. Trans-Neptunian objects (TNOs) contain the most primitive and thermally least-processed materials from the early accretional phase of the solar system.
S. Fornasier, L. Kolokolova, Tozzi, Gian Paolo, Muinonen, Karri, Barucci, Maria Antonella, S. Bagnulo, Fornasier, Sonia, I. Belskaya, Bagnulo, Stefano, K. Muinonen, Kolokolova, L., M. A. Barucci, Belskaya, Irina, G. P. Tozzi   +13 more
core   +1 more source

Carbonaceous Chondrite-like Compositions for Proposed Captured Trans-Neptunian Objects Justitia and Pompeja

The Astrophysical Journal Letters
Red spectral slopes (i.e. increasing reflectance with increasing wavelength) and featureless 0.5–2.5 μ m spectra are often associated with the presence of organic material, and there is a sense that the redder the slope, the more organic material is ...
Andrew S. Rivkin, Richard J. Cartwright, Joshua P. Emery, Cristina A. Thomas   +3 more
doaj   +1 more source

Processing of methane and acetylene ices by galactic cosmic rays and implications to the color diversity of Kuiper Belt objects. [PDF]

Sci Adv, 2023
Zhang C, Zhu C, Turner AM, Antonov IO, Garcia AD, Meinert C, Young LA, Jewitt DC, Kaiser RI.   +8 more
europepmc   +1 more source

Spectral Characterization of the Organic- and Methanol-rich Cliff-type Trans-Neptunian Objects

The Astronomical Journal
Trans-Neptunian objects (TNOs) harbor pristine materials from the early solar system. The James Webb Space Telescope offers major insights into the spectral classification of these small bodies.
Lucas T. McClure, Joshua P. Emery, Noemi Pinilla-Alonso, Rosario Brunetto, Sasha Cryan, Elsa Hénault, Brittany Harvison, Bryan J. Holler, Yvonne Pendleton, Dale Cruikshank, John Stansberry, Aurelie Guilbert-Lepoutre, Javier Licandro, Vania Lorenzi, Thomas Müller, Ana Carolina de Souza-Feliciano, Charles Schambeau, Nuno Peixinho, Michele Bannister   +18 more
doaj   +1 more source

The Effect of Massive Trans-Neptunian Objects in the Long-term Evolution and Leakage Rates of Neptune’s 3:2 and 2:1 Mean Motion Resonances

The Astronomical Journal
The current populations trapped in Neptune’s main mean motion resonances in the Kuiper Belt, Plutinos in the 3:2 and Twotinos in the 2:1, contain some of the best-characterized minor objects in the solar system, given their dynamical importance.
Marco A. Muñoz-Gutiérrez, Sebastián Ramírez-Vargas, Antonio Peimbert, Angeles Pérez-Villegas, Cristobal Petrovich   +4 more
doaj   +1 more source

Discovery of a Dwarf Planet Candidate in an Extremely Wide Orbit: 2017 OF201

The Astrophysical Journal Letters
We report the discovery of a dwarf planet candidate, 2017 OF201, currently located at a distance of 90 au. Its orbit is extremely wide and extends to the inner Oort cloud, with a semimajor axis of 830 au and a perihelion of 45 au, precisely determined ...
Sihao Cheng, Jiaxuan Li, Eritas Yang
doaj   +1 more source