Related papers: The trans-Neptunian object (84922) 2003 VS2 throug…

The two rings of (50000) Quaoar

Quaoar is a classical Trans-Neptunian Object (TNO) with an area equivalent diameter of 1,100 km and an orbital semi-major axis of 43.3 astronomical units. Based on stellar occultations observed between 2018 and 2021, an inhomogeneous ring…

Earth and Planetary Astrophysics · Physics 2023-05-10 C. L. Pereira , B. Sicardy , B. E. Morgado , F. Braga-Ribas , E. Fernández-Valenzuela , D. Souami , B. J. Holler , R. C. Boufleur , G. Margoti , M. Assafin , J. L. Ortiz , P. Santos-Sanz , B. Epinat , P. Kervella , J. Desmars , R. Vieira-Martins , Y. Kilic , A. R. Gomes-Júnior , J. I. B. Camargo , M. Emilio , M. Vara-Lubiano , M. Kretlow , L. Albert , C. Alcock , J. G. Ball , K. Bender , M. W. Buie , K. Butterfield , M. Camarca , J. H. Castro-Chacón , R. Dunford , R. S. Fisher , D. Gamble , J. C. Geary , C. L. Gnilka , K. D. Green , Z. D. Hartman , C-K. Huang , H. Januszewski , J. Johnston , M. Kagitani , R. Kamin , J. J. Kavelaars , J. M. Keller , K. R. de Kleer , M. J. Lehner , A. Luken , F. Marchis , T. Marlin , K. McGregor , V. Nikitin , R. Nolthenius , C. Patrick , S. Redfield , A. W. Rengstorf , M. Reyes-Ruiz , T. Seccull , M. F. Skrutskie , A. B. Smith , M. Sproul , A. W. Stephens , A. Szentgyorgyi , S. Sánchez-Sanjuán , E. Tatsumi , A. Verbiscer , S-Y. Wang , F. Yoshida , R. Young , Z-W. Zhang

Size and shape of Chariklo from multi-epoch stellar occultations

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 Chariklo (sphere, Maclaurin spheroid, tri-axial ellipsoid and…

Earth and Planetary Astrophysics · Physics 2017-09-26 R Leiva , B Sicardy , J I B Camargo , J -L Ortiz , J Desmars , D Bérard , E Lellouch , E Meza , P Kervella , C Snodgrass , R Duffard , N Morales , A R Gomes-Júnior , G Benedetti-Rossi , R Vieira-Martins , F Braga-Ribas , M Assafin , B E Morgado , F Colas , C De Witt , A A Sickafoose , H Breytenbach , J -L Dauvergne , P Schoenau , L Maquet , K L Bath , H J Bode , A Cool , B Lade , S Kerr , D Herald

Results of two multi-chord stellar occultations by dwarf planet (1) Ceres

We report the results of two multi-chord stellar occultations by the dwarf planet (1) Ceres that were observed from Brazil on 2010 August 17, and from the USA on 2013 October 25. Four positive detections were obtained for the 2010…

Earth and Planetary Astrophysics · Physics 2015-06-16 A. R. Gomes-Júnior , B. L. Giacchini , F. Braga-Ribas , M. Assafin , R. Vieira-Martins , J. I. B. Camargo , B. Sicardy , B. Timerson , T. George , J. Broughton , T. Blank , G. Benedetti-Rossi , J. Brooks , R. F. Dantowitz , D. W. Dunham , J. B. Dunham , C. K. Ellington , M. Emilio , F. R. Herpich , C. Jacques , P. D. Maley , L. Mehret , A. J. T. Mello , A. C. Milone , E. Pimentel , W. Schoenell , N. S. Weber

A high geometric albedo and small size of the Haumea cluster member (24835) 1995 SM55 from a stellar occultation and photometric observations

Trans-Neptunian objects (TNOs) are among the most ancient bodies of the solar system. Understanding their physical properties is key to constraining their origin and the evolution of the outer regions beyond Neptune. Stellar occultations…

Earth and Planetary Astrophysics · Physics 2025-11-19 J. L. Ortiz , N. Morales , B. Sicardy , F. L. Rommel , F. Braga-Ribas , Y. Kilic , E. Fernández-Valenzuela , J. L. Rizos , B. Morgado , L. Catani , M. Kretlow , J. M. Gómez-Limón , J. Desmars , P. Santos-Sanz , O. Erece , I. Akoz , K. Uluc , S. Kaspi , A. Marciniak , V. Turcu , D. Moldovan , A. Sonka , E. Petrescu , A. Nedelcu , C. Nehir , R. Morales , R. Duffard , D. Souami , W. Thuillot , J. I. B. Camargo , R. Vieira-Martins , J. Lecacheux , A. Alvarez-Candal , M. Assafin , G. Benedetti-Rossi , A. Gomes-Junior , R. Boufleur , U. Hopp , C. Goessl , M. Schmidt , A. Takey , A. M. Abdelaziz , H. Mikuz , A. Mohar , J. Skvarc , O. Schreurs , M. Lecossois , T. Janik , M. N. Bagiran , S. Fişek , S. Alis , F. K. Yelkenci , M. Acar , N. Takacs , R. Szakats , A. Pal , J. Manek , B. A. Dumitru , K. Gazeas , F. Ursache , D. Nardiello , V. Nascimbeni , M. Rottenborn , E. Sonbas , W. Ogloza , A. Nastasi , S. Leonini , M. Conti , P. Rosi , L. M. Tinjaca Ramirez , L. Bellizi , A. Marchini , G. Verna , A. Solmaz , M. Tekes , D. Antuszewicz , D. Pica , D. Ilic , M. Grozdanovic , L. Stoian , P. Bacci , M. Maestripieri , G. Krannich , R. Bacci , M. Altan , K. Hornoch , R. Nesci , F. Ciabattari , G. M. Szabó , J. Kovács , Z. Garai , Z. Bora , P. Zeleny , B. Gaehrken , M. Fiedler , L. Curelaru , S. Ion , R. Schaefer , J. Kubánek , P. Delincak , S. Kalkan

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

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 which yielded a central flash detection. We aimed at…

Earth and Planetary Astrophysics · Physics 2022-04-20 J. Marques Oliveira , B. Sicardy , A. R. Gomes-Júnior , J. L. Ortiz , D. F. Strobel , T. Bertrand , F. Forget , E. Lellouch , J. Desmars , D. Bérard , A. Doressoundiram , J. Lecacheux , R. Leiva , E. Meza , F. Roques , D. Souami , T. Widemann , P. Santos-Sanz , N. Morales , R. Duffard , E. Fernández-Valenzuela , A. J. Castro-Tirado , F. Braga-Ribas , B. E. Morgado , M. Assafin , J. I. B. Camargo , R. Vieira-Martins , G. Benedetti-Rossi , S. Santos-Filho , M. V. Banda-Huarca , F. Quispe-Huaynasi , C. L. Pereira , F. L. Rommel , G. Margoti , A. Dias-Oliveira , F. Colas , J. Berthier , S. Renner , R. Hueso , S. Pérez-Hoyos , A. Sánchez-Lavega , J. F. Rojas , W. Beisker , M. Kretlow , D. Herald , D. Gault , K. -L. Bath , H. -J. Bode , E. Bredner , K. Guhl , T. V. Haymes , E. Hummel , B. Kattentidt , O. Klös , A. Pratt , B. Thome , C. Avdellidou , K. Gazeas , E. Karampotsiou , L. Tzouganatos , E. Kardasis , A. A. Christou , E. M. Xilouris , I. Alikakos , A. Gourzelas , A. Liakos , V. Charmandaris , M. Jelínek , J. Štrobl , A. Eberle , K. Rapp , B. Gährken , B. Klemt , S. Kowollik , R. Bitzer , M. Miller , G. Herzogenrath , D. Frangenberg , L. Brandis , I. Pütz , V. Perdelwitz , G. M. Piehler , P. Riepe , K. von Poschinger , P. Baruffetti , D. Cenadelli , J. -M. Christille , F. Ciabattari , R. Di Luca , D. Alboresi , G. Leto , R. Zanmar Sanchez , P. Bruno , G. Occhipinti , L. Morrone , L. Cupolino , A. Noschese , A. Vecchione , C. Scalia , R. Lo Savio , G. Giardina , S. Kamoun , R. Barbosa , R. Behrend , M. Spano , E. Bouchet , M. Cottier , L. Falco , S. Gallego , L. Tortorelli , S. Sposetti , J. Sussenbach , F. Van Den Abbeel , P. André , M. Llibre , F. Pailler , J. Ardissone , M. Boutet , J. Sanchez , M. Bretton , A. Cailleau , V. Pic , L. Granier , R. Chauvet , M. Conjat , J. L. Dauvergne , O. Dechambre , P. Delay , M. Delcroix , L. Rousselot , J. Ferreira , P. Machado , P. Tanga , J. -P. Rivet , E. Frappa , M. Irzyk , F. Jabet , M. Kaschinski , A. Klotz , Y. Rieugnie , A. N. Klotz , O. Labrevoir , D. Lavandier , D. Walliang , A. Leroy , S. Bouley , S. Lisciandra , J. -F. Coliac , F. Metz , D. Erpelding , P. Nougayrède , T. Midavaine , M. Miniou , S. Moindrot , P. Morel , B. Reginato , E. Reginato , J. Rudelle , B. Tregon , R. Tanguy , J. David , W. Thuillot , D. Hestroffer , G. Vaudescal , D. Baba Aissa , Z. Grigahcene , D. Briggs , S. Broadbent , P. Denyer , N. J. Haigh , N. Quinn , G. Thurston , S. J. Fossey , C. Arena , M. Jennings , J. Talbot , S. Alonso , A. Román Reche , V. Casanova , E. Briggs , R. Iglesias-Marzoa , J. Abril Ibáñez , M. C. Díaz Martín , H. González , J. L. Maestre García , J. Marchant , I. Ordonez-Etxeberria , P. Martorell , J. Salamero , F. Organero , L. Ana , F. Fonseca , V. Peris , O. Brevia , A. Selva , C. Perello , V. Cabedo , R. Gonçalves , M. Ferreira , F. Marques Dias , A. Daassou , K. Barkaoui , Z. Benkhaldoun , M. Guennoun , J. Chouqar , E. Jehin , C. Rinner , J. Lloyd , M. El Moutamid , C. Lamarche , J. T. Pollock , D. B. Caton , V. Kouprianov , B. W. Timerson , G. Blanchard , B. Payet , A. Peyrot , J. -P. Teng-Chuen-Yu , J. Françoise , B. Mondon , T. Payet , C. Boissel , M. Castets , W. B. Hubbard , R. Hill , H. J. Reitsema , O. Mousis , L. Ball , G. Neilsen , S. Hutcheon , K. Lay , P. Anderson , M. Moy , M. Jonsen , I. Pink , R. Walters , B. Downs

A Single-chord Stellar Occultation by the Extreme Trans-Neptunian Object (541132) Lele\={a}k\={u}honua

A stellar occultation by the extreme large-perihelion trans-Neptunian object (541132) Lele\={a}k\={u}honua (also known by the provisional designation of 2015 TG387) was predicted by the Lucky Star project and observed with the Research and…

Earth and Planetary Astrophysics · Physics 2020-11-10 Marc W. Buie , Rodrigo Leiva , John M. Keller , Josselin Desmars , Bruno Sicardy , JJ Kavelaars , Terry Bridges , Robert Weryk , Dave Herald , Sean L. Haley , Ryder Strauss , Elizabeth Wilde , Robert Baker , Ken Conway , Bryan Dean , Mackenzie Dunham , James J Estes , Naemi Fiechter , Rima Givot , Cameron Glibbery , Bruce Gowe , Jennifer N. Hayman , Olivia L Ireland , Matthew Kehrli , Erik M. Moore , Matthew A. MacDonald , Delsie McCrystal , Paola Mendoza , Bruce Palmquist , Sherry Rennau , Ramsey Schar , Diana J. Swanson , Emma D. Terris , Holly Werts , J. A. Wise

Photometric Observations Constraining the Size, Shape, and Albedo of 2003 El61, a Rapidly Rotating, Pluto-Sized Object in the Kuiper Belt

We present measurements at optical wavelengths of the spectral reflectance, rotational light curve, and solar phase curve of 2003 EL61. With apparent visual magnitude 17.5 at 51 AU from the sun, this newly discovered member of the classical…

Astrophysics · Physics 2010-11-11 David L. Rabinowitz , Kristina Barkume , Michael E. Brown , Henry Roe , Michael Schwartz , Suzanne Tourtellotte , Chad Trujillo

Pluto's atmosphere from stellar occultations in 2012 and 2013

We analyze two multi-chord stellar occultations by Pluto observed on July 18th, 2012 and May 4th, 2013, and monitored respectively from five and six sites. They provide a total of fifteen light-curves, twelve of them being used for a…

Earth and Planetary Astrophysics · Physics 2015-09-23 A. Dias-Oliveira , B. Sicardy , E. Lellouch , R. Vieira-Martins , M. Assafin , J. I. B. Camargo , F. Braga-Ribas , A. R. Gomes-Júnior , G. Benedetti-Rossi , F. Colas , A. Decock , A. Doressoundiram , C. Dumas , M. Emilio , J. Fabrega Polleri , R. Gil-Hutton , M. Gillon , J. Girard , G. Hau , V. D. Ivanov , E. Jehin , J. Lecacheux , R. Leiva , C. Lopez-Sisterna , L. Mancini , A. Maury , E. Meza , N. Morales , L. Nagy , C. Opitom , J. L. Ortiz , J. Pollock , F. Roques , C. Snodgrass , J. F. Soulier , A. Thirouin , L. Vanzi , T. Widemann , D. E. Reichart , A. P. LaCluyze , J. B. Haislip , K. M. Ivarsen , M. Dominik , U. Jørgensen , J. Skottfelt

Lightcurves and Rotations of Trans-Neptunian Objects in the 2:1 Mean Motion Resonance with Neptune

We report the rotational lightcurves of 21 trans-Neptunian objects (TNOs) in Neptune's 2:1 mean motion resonance obtained with the 6.5 m Magellan-Baade telescope and the 4.3 m Lowell Discovery Telescope. The main survey's goal is to find…

Earth and Planetary Astrophysics · Physics 2022-06-22 Audrey Thirouin , Scott S. Sheppard

TNOs are Cool: A survey of the trans-Neptunian region V. Physical characterization of 18 Plutinos using Herschel PACS observations

We present Herschel PACS photometry of 18 Plutinos and determine sizes and albedos for these objects using thermal modeling. We analyze our results for correlations, draw conclusions on the Plutino size distribution, and compare to earlier…

Earth and Planetary Astrophysics · Physics 2015-06-04 Michael Mommert , A. W. Harris , C. Kiss , A. Pal , P. Santos-Sanz , J. Stansberry , A. Delsanti , E. Vilenius , T. G. Mueller , N. Peixinho , E. Lellouch , N. Szalai , F. Henry , R. Duffard , S. Fornasier , P. Hartogh , M. Mueller , J. L. Ortiz , S. Protopapa , M. Rengel , A. Thirouin

Pushing the limits: K2 observations of the trans-Neptunian objects 2002 GV31 and (278361) 2007 JJ43

We present the first photometric observations of trans-Neptunian objects (TNOs) taken with the Kepler space telescope, obtained in the course of the K2 ecliptic survey. Two faint objects have been monitored in specifically designed pixel…

Earth and Planetary Astrophysics · Physics 2015-05-27 A. Pál , R. Szabó , Gy. M. Szabó , L. L. Kiss , L. Molnár , K. Sárneczky , Cs. Kiss

A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS

Stellar occultation is a powerful technique that allows the determination of some physical parameters of the occulting object. The result depends on the photometric accuracy, the temporal resolution, and the number of chords obtained. Space…

Earth and Planetary Astrophysics · Physics 2022-08-31 B. E. Morgado , G. Bruno , A. R. Gomes-Júnior , I. Pagano , B. Sicardy , A. Fortier , J. Desmars , P. F. L. Maxted , F. Braga-Ribas , D. Queloz , S. G. Sousa , J. L. Ortiz , A. Brandeker , A. Collier Cameron , C. L. Pereira , H. G. Florén , N. Hara , D. Souami , K. G. Isaak , G. Olofsson , P. Santos-Sanz , T. G. Wilson , J. Broughton , Y. Alibert , R. Alonso , G. Anglada , T. Bárczy , D. Barrado , S. C. C. Barros , W. Baumjohann , M. Beck , T. Beck , W. Benz , N. Billot , X. Bonfils , C. Broeg , J. Cabrera , S. Charnoz , S. Csizmadia , M. B. Davies , M. Deleuil , L. Delrez , O. D. S. Demangeon , B. O. Demory , D. Ehrenreich , A. Erikson , L. Fossati , M. Fridlund , D. Gandolfi , M. Gillon , M. Güdel , K. Heng , S. Hoyer , L. L. Kiss , J. Laskar , A. Lecavelier des Etangs , M. Lendl , C. Lovis , D. Magrin , L. Marafatto , V. Nascimbeni , R. Ottensamer , E. Pallé , G. Peter , D. Piazza , G. Piotto , D. Pollacco , R. Ragazzoni , N. Rando , F. Ratti , H. Rauer , C. Reimers , I. Ribas , N. C. Santos , G. Scandariato , D. Ségransan , A. E. Simon , A. M. S. Smith , M. Steller , G. M. Szabó , N. Thomas , S. Udry , V. Van Grootel , N. A. Walton , K. Westerdorff

Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objects and Centaurs

Trans-Neptunian objects (TNOs) and Centaurs are remnants of our planetary system formation, and their physical properties have invaluable information for evolutionary theories. Stellar occultation is a ground-based method for studying these…

Earth and Planetary Astrophysics · Physics 2021-01-04 F. L. Rommel , F. Braga-Ribas , J. Desmars , J. I. B. Camargo , J. L. Ortiz , B. Sicardy , R. Vieira-Martins , M. Assafin , P. Santos-Sanz , R. Duffard , E. Fernández-Valenzuela , J. Lecacheux , B. E. Morgado , G. Benedetti-Rossi , A. R. Gomes-Júnior , C. L. Pereira , D. Herald , W. Hanna , J. Bradshaw , N. Morales , J. Brimacombe , A. Burtovoi , T. Carruthers , J. R. de Barros , M. Fiori , A. Gilmore , D. Hooper , K. Hornoch , C. Jacques , T. Janik , S. Kerr , P. Kilmartin , Jan Maarten Winkel , G. Naletto , D. Nardiello , V. Nascimbeni , J. Newman , A. Ossola , A. Pál , E. Pimentel , P. Pravec , S. Sposetti , A. Stechina , R. Szákats , Y. Ueno , L. Zampieri , J. Broughton , J. B. Dunham , D. W. Dunham , D. Gault , T. Hayamizu , K. Hosoi , E. Jehin , R. Jones , K. Kitazaki , R. Komžík , A. Marciniak , A. Maury , H. Mikuž , P. Nosworthy , J. Fábrega Polleri , S. Rahvar , R. Sfair , P. B. Siqueira , C. Snodgrass , P. Sogorb , H. Tomioka , J. Tregloan-Reed , O. C. Winter

Size and Shape Constraints of (486958) Arrokoth from Stellar Occultations

We present the results from four stellar occultations by (486958) Arrokoth, the flyby target of the New Horizons extended mission. Three of the four efforts led to positive detections of the body, and all constrained the presence of rings…

Earth and Planetary Astrophysics · Physics 2020-04-08 Marc W. Buie , Simon B. Porter , Peter Tamblyn , Dirk Terrell , Alex Harrison Parker , David Baratoux , Maram Kaire , Rodrigo Leiva , Anne J. Verbiscer , Amanda M. Zangari , François Colas , Baïdy Demba Diop , Joseph I. Samaniego , Lawrence H. Wasserman , Susan D. Benecchi , Amir Caspi , Stephen Gwyn , J. J. Kavelaars , Adriana C. Ocampo Uría , Jorge Rabassa , M. F. Skrutskie , Alejandro Soto , Paolo Tanga , Eliot F. Young , S. Alan Stern , Bridget C. Andersen , Mauricio E. Arango Pérez , Anicia Arredondo , Rodolfo Alfredo Artola , Abdoulaye Bâ , Romuald Ballet , Ted Blank , Cheikh Tidiane Bop , Amanda S. Bosh , Matías Aarón Camino López , Christian M. Carter , J. H. Castro-Chacón , Alfonso Caycedo Desprez , Nicolás Caycedo Guerra , Steven J. Conard , Jean-Luc Dauvergne , Bryan Dean , Michelle Dean , Josselin Desmars , Abdou Lahat Dieng , Mame Diarra Bousso Dieng , Omar Diouf , Gualbert Séraphin Dorego , David W. Dunham , Joan Dunham , Hugo A. Durantini Luca , Patrick Edwards , Nicolas Erasmus , Gayane Faye , Mactar Faye , Lucas Ezequiel Ferrario , Chelsea L. Ferrell , Tiffany J. Finley , Wesley C. Fraser , Alison J. Friedli , Julián Galvez Serna , Esteban A. Garcia-Migani , Anja Genade , Kai Getrost , Ricardo A. Gil-Hutton , German N. Gimeno , Eli Joseph Golub , Giovanni Francisco González Murillo , Michael D. Grusin , Sebastian Gurovich , William H. Hanna , Santiago M. Henn , P. C. Hinton , Paul J. Hughes , John David Josephs , Raul Joya , Joshua A. Kammer , Brian A. Keeney , John M. Keller , Emily A. Kramer , Stephen E. Levine , Carey M. Lisse , Amy J. Lovell , Jason A. Mackie , Stanislav Makarchuk , Luis E. Manzano , Salma Sylla Mbaye , Modou Mbaye , Raul Roberto Melia , Freddy Moreno , Sean K. Moss , Diene Ndaiye , Mapathe Ndiaye , Matthew J. Nelson , Catherine B. Olkin , Aart M. Olsen , Victor Jonathan Ospina Moreno , Jay M. Pasachoff , Mariana Belen Pereyra , Michael J. Person , Giovanni Pinzón , Eduardo Alejandro Pulver , Edwin A. Quintero , Jeffrey R. Regester , Aaron Caleb Resnick , Mauricio Reyes-Ruiz , Alex D. Rolfsmeier , Trina R. Ruhland , Julien Salmon , Pablo Santos-Sanz , Marcos Ariel Santucho , Diana Karina Sepúlveda Niño , Amanda A. Sickafoose , José S. Silva , Kelsi N. Singer , Joy N. Skipper , Stephen M. Slivan , Rose J. C. Smith , Julio C. Spagnotto , Andrew W. Stephens , Samuel D. Strabala , Francisco J. Tamayo , Henry B. Throop , Andrés David Torres Cañas , Labaly Toure , Alassane Traore , Constantine C. C. Tsang , Jake D. Turner , Santiago Vanegas , Roger Venable , John C. Wilson , Carlos A. Zuluaga , Jorge I. Zuluaga

Short-term variability of 10 trans-Neptunian objects

We present our latest results about the short-term variability of trans-Neptunian objects (TNOs). We performed broad-band CCD photometric observations using several telescopes in Spain and Chile. We present results based on three years of…

Earth and Planetary Astrophysics · Physics 2015-06-05 A. Thirouin , J. L. Ortiz , A. Campo Bagatin , P. Pravec , N. Morales , O. Hainaut , R. Duffard

The 2017 May 20$^{\rm th}$ stellar occultation by the elongated centaur (95626) 2002 GZ$_{32}$

We predicted a stellar occultation of the bright star Gaia DR1 4332852996360346368 (UCAC4 385-75921) (m$_{\rm V}$= 14.0 mag) by the centaur 2002 GZ$_{32}$ for 2017 May 20$^{\rm th}$. Our latest shadow path prediction was favourable to a…

Earth and Planetary Astrophysics · Physics 2021-01-13 P. Santos-Sanz , J. L. Ortiz , B. Sicardy , G. Benedetti-Rossi , N. Morales , E. Fernández-Valenzuela , R. Duffard , R. Iglesias-Marzoa , J. L. Lamadrid , N. Maícas , L. Pérez , K. Gazeas , J. C. Guirado , V. Peris , F. J. Ballesteros , F. Organero , L. Ana-Hernández , F. Fonseca , A. Alvarez-Candal , Y. Jiménez-Teja , M. Vara-Lubiano , F. Braga-Ribas , J. I. B. Camargo , J. Desmars , M. Assafin , R. Vieira-Martins , J. Alikakos , M. Boutet , M. Bretton , A. Carbognani , V. Charmandaris , F. Ciabattari , P. Delincak , A. Fuambuena Leiva , H. González , T. Haymes , S. Hellmich , J. Horbowicz , M. Jennings , B. Kattentidt , Cs. Kiss , R. Komžík , J. Lecacheux , A. Marciniak , S. Moindrot , S. Mottola , A. Pal , N. Paschalis , S. Pastor , C. Perello , T. Pribulla , C. Ratinaud , J. A. Reyes , J. Sanchez , C. Schnabel , A. Selva , F. Signoret , E. Sonbas , V. Alí-Lagoa

The multichord stellar occultation by the centaur Bienor on January 11, 2019

Within our program of physical characterization of trans-Neptunian objects and centaurs, we predicted a stellar occultation by the centaur (54598) Bienor to occur on January 11, 2019, with good observability potential. We obtained high…

Earth and Planetary Astrophysics · Physics 2023-01-25 E. Fernández-Valenzuela , N. Morales , M. Vara-Lubiano , J. L. Ortiz , G. Benedetti-Rossi , B. Sicardy , M. Kretlow , P. Santos-Sanz , B. Morgado , D. Souami , F. Organero , L. Ana , F. Fonseca , A. Román , S. Alonso , R. Gonçalves , M. Ferreira , R. Iglesias-Marzoa , J. L. Lamadrid , A. Alvarez-Candal , M. Assafin , F. Braga-Ribas , J. I. B. Camargo , F. Colas , J. Desmars , R. Duffard , J. Lecacheux , A. R. Gomes-Júnior , F. L. Rommel , R. Vieira-Martins , C. L. Pereira , V. Casanova , A. Selva , C. Perelló , S. Mottola , S. Hellmich , J. L. Maestre , A. J. Castro-Tirado , A. Pal , J. M. Trigo-Rodriguez , W. Beisker , A. Laporta , M. Garcés , L. Escaned , M. Bretton

Visible spectroscopy of 2003 UB313: Evidence for N2 ice on the surface of the largest TNO?

The recent discovery of two large trans-Neptunian objects (TNOs) 2003 UB313 and 2005 FY9, with surface properties similar to those of Pluto, provides an exciting new laboratory for the study of processes considered for Pluto and Triton:…

Astrophysics · Physics 2009-11-11 J. Licandro , W. M. Grundy , N. Pinilla-Alonso , J. de Leon

Constraints on the Atmospheric Composition of 2002 XV$_{93}$ from JWST Spectroscopy

The recent detection of an atmosphere surrounding the trans-Neptunian object (TNO) 2002 XV$_{93}$ from stellar occultation measurements has challenged the longstanding view that only the largest TNOs can sustain an atmosphere. Atmospheric…

Earth and Planetary Astrophysics · Physics 2026-05-29 Ian Wong , Silvia Protopapa , Emmanuel Lellouch

Photometric observations of nine Transneptunian objects and Centaurs

We present the results of photometric observations of six Transneptunian objects and three Centaurs, estimations of their rotational periods and corresponding amplitudes. For six of them we present also lower limits of density values. All…

Earth and Planetary Astrophysics · Physics 2017-12-27 T. Hromakina , D. Perna , I. Belskaya , E. Dotto , A. Rossi , F. Bisi