output
20132024
most citedThe long-term steady motion of Saturn's Hexagon and the stability of its enclosed jet-stream under seasonal changes

60 citations

10 papers

astro-ph.EP2024★ 60 cited

The long-term steady motion of Saturn's Hexagon and the stability of its enclosed jet-stream under seasonal changes

A. Sánchez-Lavega, T. del Río-Gaztelurrutia, R. Hueso +15

We investigate the long-term motion of Saturn's North-Pole Hexagon and the structure of its associated eastward jet, using Cassini ISS and ground-based images from 2008 to 2014. We…

astro-ph.EP2022★ 1 cited

Amateur Observers Witness the Return of Venus' Cloud Discontinuity

Kardasis E., Peralta J., Maravelias G. +13

Firstly identified in images from JAXA's orbiter Akatsuki, the cloud discontinuity of Venus is a planetary-scale phenomenon known to be recurrent since, at least, the 1980s. Interp…

astro-ph.EP2022★ 20 cited

Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations

J. Marques Oliveira, B. Sicardy, A. R. Gomes-Júnior +234

A stellar occultation by Neptune's main satellite, Triton, was observed on 5 October 2017 from Europe, North Africa, and the USA. We derived 90 light curves from this event, 42 of…

astro-ph.EP2020★ 25 cited

A Long-lived Sharp Disruption on the Lower Clouds of Venus

J. Peralta, T. Navarro, C. W. Vun +19

Planetary-scale waves are thought to play a role in powering the yet-unexplained atmospheric superrotation of Venus. Puzzlingly, while Kelvin, Rossby and stationary waves manifest…

astro-ph.EP2019★ 15 cited

Morphology and dynamics of Venus's middle clouds with Akatsuki/IR1

J. Peralta, N. Iwagami, Sánchez-Lavega +8

The Venusian atmosphere is covered by clouds with super-rotating winds whose accelerating mechanism is still not well understood. The fastest winds, occurring at the cloud tops ($\…

astro-ph.EP2019★ 47 cited

Pluto's lower atmosphere and pressure evolution from ground-based stellar occultations, 1988-2016

E. Meza, B. Sicardy, M. Assafin +167

Context. Pluto's tenuous nitrogen (N2) atmosphere undergoes strong seasonal effects due to high obliquity and orbital eccentricity, and has been recently (July 2015) observed by th…

astro-ph.EP2018★ 21 cited

Small impacts on the giant planet Jupiter

R. Hueso, M. Delcroix, A. Sánchez-Lavega +8

Video observations of Jupiter obtained by amateur astronomers over the past eight years have shown five flashes of light of 1-2 s. The first three of these events occurred on 3 Jun…

astro-ph.EP2017★ 59 cited

Size and shape of Chariklo from multi-epoch stellar occultations

R Leiva, B Sicardy, J I B Camargo +28

We use data from five stellar occultations observed between 2013 and 2016 to constrain Chariklo's size and shape, and the ring reflectivity. We consider four possible models for Ch…

astro-ph.EP2017★ 42 cited

The structure of Chariklo's rings from stellar occultations

D. Bérard, B. Sicardy, J. I. B. Camargo +79

Two narrow and dense rings (called C1R and C2R) were discovered around the Centaur object (10199) Chariklo during a stellar occultation observed on 2013 June 3. Following this disc…

astro-ph.IM2013★ 57 cited

Instrumental Methods for Professional and Amateur Collaborations in Planetary Astronomy

O. Mousis, R. Hueso, J. -P. Beaulieu +57

Amateur contributions to professional publications have increased exponentially over the last decades in the field of Planetary Astronomy. Here we review the different domains of t…