Results 31 to 40 of about 256 (139)

Advanced Techniques in Stability Analysis of Trans-Neptunian Objects

Universe
The trans-Neptunian region (30–50 AU) is a dynamically structured reservoir of icy planetesimals whose orbital architecture reflects resonant dynamics, chaotic transport, and long-term gravitational sculpting by the giant planets. This review synthesizes
Tamás Kovács
doaj   +1 more source

Ceres: Organic‐Rich Sites of Exogenic Origin?

AGU Advances, Volume 6, Issue 1, February 2025.
Abstract Ceres, the largest object in the asteroid belt, is the only potential ocean world in the inner Solar System. Previous studies identified deposits of aliphatic organics in and around the Ernutet crater, and at small locations at Inamahari and Urvara craters. The origin of organics, either endogenic or exogenic, in these fresh exposures is still
R. Sarkar, A. Nathues, M. Hoffmann, E. Cloutis, K. Mengel, P. Singh, G. Thangjam, J. Hernandez, S. Karunatillake, M. Coutelier   +9 more
wiley   +1 more source

A Spiral Structure in the Inner Oort Cloud

The Astrophysical Journal
As the Galactic tide acts to decouple bodies from the scattered disk it creates a spiral structure in physical space that is roughly 15,000 au in length. The spiral is long-lived and persists in the inner Oort cloud to the present time.
David Nesvorný, Luke Dones, David Vokrouhlický, Hal F. Levison, Cristian Beaugé, Jacqueline Faherty, Carter Emmart, Jon P. Parker   +7 more
doaj   +1 more source

Is There an Earth-like Planet in the Distant Kuiper Belt?

The Astronomical Journal, 2023
The orbits of trans-Neptunian objects (TNOs) can indicate the existence of an undiscovered planet in the outer solar system. Here we used N -body computer simulations to investigate the effects of a hypothetical Kuiper Belt planet (KBP) on the orbital ...
Patryk Sofia Lykawka, Takashi Ito
doaj   +1 more source

Photometry of Outer Solar System Objects from the Dark Energy Survey. I. Photometric Methods, Light-curve Distributions, and Trans-Neptunian Binaries

The Astrophysical Journal Supplement Series, 2023
We report the methods of and initial scientific inferences from the extraction of precision photometric information for the >800 trans-Neptunian objects (TNOs) discovered in the images of the Dark Energy Survey (DES). Scene-modeling photometry is used to
Pedro H. Bernardinelli, Gary M. Bernstein, Nicholas Jindal, T. M. C. Abbott, M. Aguena, O. Alves, F. Andrade-Oliveira, J. Annis, D. Bacon, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, L. N. da Costa, M. E. S. Pereira, T. M. Davis, S. Desai, H. T. Diehl, P. Doel, S. Everett, I. Ferrero, D. Friedel, J. Frieman, J. García-Bellido, G. Giannini, D. Gruen, K. Herner, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, J. L. Marshall, J. Mena-Fernández, F. Menanteau, R. Miquel, R. L. C. Ogando, A. Palmese, A. Pieres, A. A. Plazas Malagón, M. Raveri, E. Sanchez, I. Sevilla-Noarbe, M. Smith, E. Suchyta, M. E. C. Swanson, G. Tarle, C. To, A. R. Walker, P. Wiseman, Y. Zhang, (The DES Collaboration)   +53 more
doaj   +1 more source

Water‐Ice Dominated Spectra of Saturn's Rings and Small Moons From JWST

Journal of Geophysical Research: Planets, Volume 129, Issue 3, March 2024.
Abstract JWST measured the infrared spectra of Saturn's rings and several of its small moons (Epimetheus, Pandora, Telesto, and Pallene) as part of Guaranteed Time Observation program 1247. The NIRSpec instrument obtained near‐infrared spectra of the small moons between 0.6 and 5.3 microns, which are all dominated by water‐ice absorption bands.
M. M. Hedman, M. S. Tiscareno, M. R. Showalter, L. N. Fletcher, O. R. T. King, J. Harkett, M. T. Roman, N. Rowe‐Gurney, H. B. Hammel, S. N. Milam, M. El Moutamid, R. J. Cartwright, I. de Pater, E. M. Molter   +13 more
wiley   +1 more source

LiDO: Discovery of a 10:1 Resonator with a Novel Libration State

The Planetary Science Journal
The Large inclination Distant Objects (L i DO) survey has discovered the first securely classified object in the 10:1 mean motion resonance of Neptune.
Rosemary E. Pike, Ruth Murray-Clay, Kathryn Volk, Mike Alexandersen, Mark Comte, Samantha M. Lawler, Ying-Tung Chen, Arcelia Hermosillo Ruiz, Cameron Semenchuck, Cameron Collyer, J. J. Kavelaars, Lowell Peltier   +11 more
doaj   +1 more source

Beyond Point Masses. IV. Trans-Neptunian Object Altjira Is Likely a Hierarchical Triple Discovered through Non-Keplerian Motion

The Planetary Science Journal
Dynamically studying trans-Neptunian object (TNO) binaries allows us to measure masses and orbits. Most of the known objects appear to have only two components, except (47171) Lempo, which is the single known hierarchical triple system with three similar-
Maia A Nelsen, Darin Ragozzine, Benjamin C. N. Proudfoot, William G. Giforos, Will Grundy   +4 more
doaj   +1 more source

OSSOS. XXIX. The Population and Perihelion Distribution of the Detached Kuiper Belt

The Planetary Science Journal, 2023
The detached trans-Neptunian objects (TNOs) are those with semimajor axes beyond the 2:1 resonance with Neptune that are neither resonant nor scattering.
Matthew Beaudoin, Brett Gladman, Yukun Huang, Michele Bannister, J. J. Kavelaars, Jean-Marc Petit, Kathryn Volk   +6 more
doaj   +1 more source

State of Ammonium Hydrosulfide (NH4SH) Salt on Icy Bodies in the Trans-Neptunian Space

The Astrophysical Journal
Ammonium hydrosulfide (NH _4 SH) is expected to be widespread on trans-Neptunian objects (TNOs), considering the predicted high abundance of hydrogen sulfide (H _2 S) in the presolar nebula and the detection of ammonia (NH _3 ) on TNOs such as Charon and
Chaojiang Zhang, Zesen Wang, Jia Wang, Leslie A. Young, Ralf I. Kaiser   +4 more
doaj   +1 more source