Results 11 to 20 of about 1,113 (144)

Light curves and colours of the faint Uranian irregular satellites Sycorax, Prospero, Stephano, Setebos and Trinculo [PDF]

open access: yes, 2007
After the work of Gladman et al. (1998), it is now assessed that many irregular satellites are orbiting around Uranus. Despite many studies have been performed in past years, very few is know for the light-curves of these objects and inconsistencies are ...
Agnor   +36 more
core   +2 more sources

CCD astrometric observations of Uranian satellites: 1995-1998 [PDF]

open access: yesAstronomy and Astrophysics Supplement Series, 1999
Astrometric positions of the ve largest Uranian satellites from 750 CCD frames taken at the oppositions of 1995 through 1998 are presented. The im- ages were obtained over 35 nights. Observed positions are compared with the calculated positions from GUST86.
C. H. Veiga, R. Vieira Martins
openaire   +1 more source

Dynamical Interactions and Mass Loss within the Uranian System

open access: yesThe Planetary Science Journal, 2023
The origin and evolution of planetary rings and moons remains an active area of study, particularly as they relate to the impact history and volatile inventory of the outer solar system.
Stephen R. Kane, Zhexing Li
doaj   +1 more source

Evidence for Nitrogen-bearing Species on Umbriel: Sourced from a Subsurface Ocean, Undifferentiated Crust, or Impactors?

open access: yesThe Planetary Science Journal, 2023
Near-infrared spectra of Umbriel and the other classical Uranian moons exhibit 2.2 μ m absorption bands that could result from ammonia (NH _3 ) bearing species, possibly exposed in the geologically recent past.
Richard J. Cartwright   +5 more
doaj   +1 more source

CCD photometry of the Uranian satellites

open access: yesThe Astronomical Journal, 1992
Broadband V and R CCD observations of the Uranian satellite system have been obtained over the full range of solar phase angles observable from earth. These first visual observations of the phase curves of Miranda, Ariel, and Umbriel show that Ariel and Miranda exhibit the large opposition surges previously seen on the two outer Uranian Satellites ...
Bonnie J. Buratti   +2 more
openaire   +1 more source

The Case for a New Frontiers–Class Uranus Orbiter: System Science at an Underexplored and Unique World with a Mid-scale Mission

open access: yesThe Planetary Science Journal, 2022
Current knowledge of the Uranian system is limited to observations from the flyby of Voyager 2 and limited remote observations. However, Uranus remains a highly compelling scientific target due to the unique properties of many aspects of the planet ...
Ian J. Cohen   +36 more
doaj   +1 more source

Photometric Survey of the Irregular Satellites [PDF]

open access: yes, 2003
We present BVRI colors of 13 Jovian and 8 Saturnian irregular satellites obtained with the 2.56m Nordic Optical Telescope on La Palma, the 6.5m Magellan Baade Telescope on La Campanas, and the 6m MMT on Mt. Hopkins.
Barucci   +62 more
core   +2 more sources

Quaoar: A Rock in the Kuiper belt [PDF]

open access: yes, 2010
Here we report WFPC2 observations of the Quaoar-Weywot Kuiper belt binary. From these observations we find that Weywot is on an elliptical orbit with eccentricity of 0.14 {\pm} 0.04, period of 12.438 {\pm} 0.005 days, and a semi-major axis of 1.45 {\pm ...
Barkume   +17 more
core   +3 more sources

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

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
International ...
Emelyanov, N., Nikonchuk, D.
openaire   +2 more sources

Properties of the Irregular Satellite System around Uranus Inferred from K2, Herschel, and Spitzer Observations [PDF]

open access: yes, 2017
In this paper, we present visible-range light curves of the irregular Uranian satellites Sycorax, Caliban, Prospero, Ferdinand, and Setebos taken with the Kepler Space Telescope over the course of the K2 mission.
Farkas-Takács, A.   +12 more
core   +1 more source

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