Results 41 to 50 of about 280 (159)

Observation and Simulation of Mutual Approximations between Five Main Uranian Satellites

The Astronomical Journal
Mutual approximation is an emerging method for obtaining high-precision astrometric measurements of natural satellites and asteroids. We used the 80 cm YaoAn High Precision Telescope to observe mutual approximation events of the main Uranian satellites ...
Jian Chen, Hao-Ran Song, Ye Yuan, Fan Li, Yan-Ning Fu, Tian-Rui Sun, Yu-Xi Jiang   +6 more
doaj   +1 more source

Erratum: Ephemerides of the main Uranian satellites: Table 1. [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
International ...
Emelyanov, N., Nikonchuk, D.
openaire   +2 more sources

Magnetopause Reconnection Voltages During the Voyager 2 Flyby of Uranus

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Uranus' magnetosphere presents a unique system to examine global magnetic reconnection processes due to its location far from the Sun. We assess reconnection effectiveness during Voyager 2's Uranus flyby, using a physics‐based analytical model to calculate reconnection voltages applied to the magnetopause.
S. Zomerdijk‐Russell, J. M. Jasinski
wiley   +1 more source

The Ionosphere of Uranus as Revealed by JWST

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract The first spectroscopic observations of Uranus by the James Webb Space Telescope were obtained in January 2023. Using these observations, we explored the physical properties of the planet's ionosphere through the analysis of near‐infrared H3+ ${\mathrm{H}}_{3}^{+}$ spectra.
Henrik Melin, L. N. Fletcher, H. B. Hammel, S. N. Milam, L. Moore, T. S. Stallard, J. O’Donoghue, P. I. Tiranti, E. M. Thomas, K. L. Knowles, M. Roman, L. Lamy, O. R. T. King, J. Harkett   +13 more
wiley   +1 more source

New Moons of Uranus and Neptune from Ultradeep Pencil-beam Surveys

The Astronomical Journal
We have conducted extremely ultradeep pencil-beam observations for new satellites around both Uranus and Neptune. Tens of images on several different nights in 2021, 2022, and 2023 were obtained, shifted, and added together to reach as faint as 26.9 and ...
Scott S. Sheppard, David J. Tholen, Marina Brozovic, Robert Jacobson, Chadwick A. Trujillo, Patryk Sofia Lykawka, Mike Alexandersen   +6 more
doaj   +1 more source

The Science Case for Spacecraft Exploration of the Uranian Satellites

, 2020
The five classical Uranian moons are possible ocean worlds that exhibit bizarre geologic landforms, hinting at recent surface-interior communication. However, Uranus' classical moons, as well as its ring moons and irregular satellites, remain poorly understood. We assert that a Flagship-class orbiter is needed to explore the Uranian satellites.
Cartwright, Richard J., Beddingfield, Chloe B., Nordheim, Tom, Elder, Catherine, Grundy, Will, Bramson, Ali, Sori, Michael, Pappalardo, Robert, Neveu, Marc, Burr, Devon, Ermakov, Anton, Roser, Joe, Castillo-Rogez, Julie, Showalter, Mark, Cohen, Ian, Turtle, Zibi, Hofstadter, Mark   +16 more
openaire   +2 more sources

Solving the Mystery of the Electron Radiation Belt at Uranus: Leveraging Knowledge of Earth's Radiation Belts in a Re‐Examination of Voyager 2 Observations

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Voyager 2 provided the only direct measurement of the radiation environment at Uranus and established the well‐accepted characterization of a system with a weaker ion radiation belt and surprisingly intense electron radiation belt. Recent re‐analysis of the flyby, however, suggests that these observations were not taken during normal solar ...
R. C. Allen, S. K. Vines, G. C. Ho
wiley   +1 more source

Estimating Soft X‐Ray Emission From Uranus's Magnetosheath

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract Soft X‐ray emission occurs within planetary magnetosheaths when highly charged solar wind ions undergo charge exchange with neutrals. The emission can provide dynamic views of the magnetosheath and cusps, allowing for investigations of the solar wind interaction with a planetary magnetosphere.
D. Naylor, L. C. Ray, W. R. Dunn, J. M. Jasinski, C. Paty   +4 more
wiley   +1 more source

Astrometric results of observations of mutual occultations and eclipses of the Uranian satellites in 2007

, 2020
Context. The photometry of mutual occultations and eclipses of natural planetary satellites can be used to infer very accurate astrometric data. This can be achieved by processing the light curves of the satellites observed during international campaigns
Aslan Z., Valdes Sada P., Casas R., Bhatt B., Miller C., Forné E., Coliac J., Braga-Ribas F., Modic R., Dumas C., Sicardy B., Arlot J., Emelyanov N., Vasundhara R., Colas F., Tanga P., Frappa E., Sahu D., Camargo J., Assafin M., Bel J., Ellington C., Khamitov I., Vieira-Martins R.   +23 more
core  

Uranus Orbiter and Probe: Mission Challenges and Concept Updates Since the Origins, Worlds, and Life Decadal Survey

The Planetary Science Journal
Origins, Worlds, and Life: Planetary Science and Astrobiology in the Next Decade identified a Uranus Orbiter and Probe as the highest-priority strategic mission for the decade 2023–2032, as it enables broad cross-disciplinary science in the largely ...
Amy A. Simon, Richard C. Anderson, Daniel T. Gallagher, Michael J. Amato, Donald H. Ellison, Jacob A. Englander, Carl Engelbrecht, Noble Hatten, Richard S. Saylor, Chloe B. Beddingfield, Richard J. Cartwright, Nancy L. Chabot, Ian J. Cohen, Kathleen Mandt, Tom A. Nordheim, Lynnae C. Quick   +15 more
doaj   +1 more source