485 citations · 1.9k across the 36 of their papers we have counts for
31 papers · 1 filter
The Thermal Structure and Composition of Jupiter's Great Red Spot From JWST/MIRI
Jake Harkett, Leigh N. Fletcher, Oliver R. T. King +15
Jupiter's Great Red Spot (GRS) was mapped by the James Webb Space Telescope (JWST)/Mid-Infrared Instrument (4.9-27.9 micron) in July and August 2022. These observations took place…
Water-Ice Dominated Spectra of Saturn's Rings and Small Moons from JWST
M. M. Hedman, M. S. Tiscareno, M. R. Showalter +11
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.…
Composition and thermal properties of Ganymede's surface from JWST/NIRSpec and MIRI observations
D. Bockelee-Morvan, E. Lellouch, O. Poch +21
JWST NIRSpec IFU (2.9-5.3 mu) and MIRI MRS (4.9-28.5 mu) observations were performed on both the leading and trailing hemispheres of Ganymede with a spectral resolution of ~2700. R…
Examining Uranus' zeta ring in Voyager 2 Wide-Angle-Camera Observations: Quantifying the Ring's Structure in 1986 and its Modifications prior to the Year 2007
M. M. Hedman, I. Regan, T. Becker +3
The zeta ring is the innermost component of the Uranian ring system. It is of scientific interest because its morphology changed significantly between the Voyager 2 encounter in 19…
Cupid Is Not Doomed Yet: On the Stability of the Inner Moons of Uranus
Matija Ćuk, Robert S. French, Mark R. Showalter +2
Some of the small inner moons of Uranus have very closely-spaced orbits. Multiple numerical studies have found that the moons Cressida and Desdemona, within the Portia sub-group, a…
A Statistical Review of Light Curves and the Prevalence of Contact Binaries in the Kuiper Belt
Mark R. Showalter, Susan D. Benecchi, Marc W. Buie +19
We investigate what can be learned about a population of distant KBOs by studying the statistical properties of their light curves. Whereas others have successfully inferred the pr…
Initial results from the New Horizons exploration of 2014 MU69, a small Kuiper Belt Object
S. A. Stern, H. A. Weaver, J. R. Spencer +202
The Kuiper Belt is a distant region of the Solar System. On 1 January 2019, the New Horizons spacecraft flew close to (486958) 2014 MU69, a Cold Classical Kuiper Belt Object, a cla…
The Geology and Geophysics of Kuiper Belt Object (486958) Arrokoth
J. R. Spencer, S. A. Stern, J. M. Moore +75
The Cold Classical Kuiper Belt, a class of small bodies in undisturbed orbits beyond Neptune, are primitive objects preserving information about Solar System formation. The New Hor…
The solar nebula origin of (486958) Arrokoth, a primordial contact binary in the Kuiper belt
W. B. McKinnon, D. C. Richardson, J. C. Marohnic +26
The New Horizons spacecraft's encounter with the cold classical Kuiper belt object (486958) Arrokoth (formerly 2014 MU69) revealed a contact-binary planetesimal. We investigate how…
Color, Composition, and Thermal Environment of Kuiper Belt Object (486958) Arrokoth
W. M. Grundy, M. K. Bird, D. T. Britt +46
The outer Solar System object (486958) Arrokoth (provisional designation 2014 MU) has been largely undisturbed since its formation. We study its surface composition using da…
Orbits and resonances of the regular moons of Neptune
Marina Brozović, Mark R. Showalter, Robert A. Jacobson +3
We report integrated orbital fits for the inner regular moons of Neptune based on the most complete astrometric data set to date, with observations from Earth-based telescopes, Voy…
The rings of Neptune
Imke de Pater, Stéfan Renner, Mark R. Showalter +1
In 1984, three telescopes in South America recorded an occultation of a star near Neptune. It was attributed to the existence of a partial ring or ring arc. The existence of ring a…
Great Expectations: Plans and Predictions for New Horizons Encounter with Kuiper Belt Object 2014 MU69 ('Ultima Thule')
Jeffrey M. Moore, William B. McKinnon, Dale P. Cruikshank +31
The New Horizons encounter with the cold classical Kuiper Belt object (KBO) 2014 MU69 (informally named 'Ultima Thule,' hereafter Ultima) on 1 January 2019 will be the first time a…
The New Horizons and Hubble Space Telescope Search For Rings, Dust, and Debris in the Pluto-Charon System
Tod R. Lauer, Henry B. Throop, Mark R. Showalter +11
We searched for dust or debris rings in the Pluto-Charon system before, during, and after the New Horizons encounter. Methodologies included searching for back-scattered light duri…
The Rings of Jupiter
Imke de Pater, D. P. Hamilton, M. R. Showalter +2
A review of the jovian ring system
Rings beyond the giant planets
Bruno Sicardy, Maryame El Moutamid, Alice C. Quillen +3
Until 2013, only the giant planets were known to host ring systems. In June 2013, a stellar occulation revealed the presence of narrow and dense rings around Chariklo, a small Cent…
The Geology of Pluto and Charon Through the Eyes of New Horizons
Jeffrey M. Moore, William B. McKinnon, John R. Spencer +38
NASA's New Horizons spacecraft has revealed the complex geology of Pluto and Charon. Pluto's encounter hemisphere shows ongoing surface geological activity centered on a vast basin…
The Small Satellites of Pluto as Observed by New Horizons
H. A. Weaver, M. W. Buie, B. J. Buratti +48
The New Horizons mission has provided resolved measurements of Pluto's moons Styx, Nix, Kerberos, and Hydra. All four are small, with equivalent spherical diameters of 40…
The Pluto system: Initial results from its exploration by New Horizons
S. A. Stern, F. Bagenal, K. Ennico +148
The Pluto system was recently explored by NASA's New Horizons spacecraft, making closest approach on 14 July 2015. Pluto's surface displays diverse landforms, terrain ages, albedos…
A new pattern in Saturn's D ring created in late 2011
M. M. Hedman, M. R. Showalter
Images obtained by the Cassini spacecraft between 2012 and 2015 reveal a periodic brightness variation in a region of Saturn's D ring that previously appeared to be rather featurel…
Uranus at equinox: Cloud morphology and dynamics
Lawrence Sromovsky, Patrick Fry, Heidi Hammel +5
As the 7 December 2007 equinox of Uranus approached, ring and atmosphere observers produced a substantial collection of observations using the 10-m Keck telescope and the Hubble Sp…
Corrugations and eccentric spirals in Saturn's D ring: New insights into what happened at Saturn in 1983
M. M. Hedman, J. A. Burns, M. R. Showalter
Previous investigations of Saturn's outer D ring (73,200-74,000 km from Saturn's center) identified periodic brightness variations whose radial wavenumber increased linearly over t…
Analysis of Clumps in Saturn's F Ring from Voyager and Cassini
Robert S. French, Shannon K. Hicks, Mark R. Showalter +2
Saturn's F ring is subject to dynamic structural changes over short periods. Among the observed phenomena are diffuse extended bright clumps (ECs) ~ 3-40 degrees in longitudinal ex…
Cupid is Doomed: An Analysis of the Stability of the Inner Uranian Satellites
Robert S. French, Mark R. Showalter
We have explored the stability of the inner Uranian satellites using simulations based on the most recent observational data. We find that, across a wide range of mass assumptions,…