The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation

  title={The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation},
  author={Jos{\'e} Luis Ortiz and Pablo Santos-Sanz and Bruno Sicardy and Gustavo Benedetti-Rossi and Diane B{\'e}rard and Nicol{\'a}s Morales and Ren{\'e} Duffard and Felipe Braga-Ribas and Ulrich Hopp and Christoph Ries and Valerio Nascimbeni and Francesco Marzari and V Granata and Andr{\'a}s P{\'a}l and Cs. P. Kiss and Theodor Pribulla and Richard Kom{\vz}{\'i}k and Kamil Hornoch and P. Pravec and Paolo Bacci and Martina Maestripieri and L. Nerli and L. Mazzei and Mauro Bachini and Fabio Martinelli and Giacomo Succi and Fabrizio Ciabattari and Herman Miku{\vz} and Albino Carbognani and Bernd G{\"a}hrken and Stefano Mottola and Stephan Hellmich and Flavia Luane Rommel and Estela Fern{\'a}ndez-Valenzuela and Adriano Campo Bagat{\'i}n and Stefan Cikota and Aleksandar Cikota and J. J. Lecacheux and Roberto Vieira-Martins and J. I. B. Camargo and Marcelo Assafin and Florent Colas and Raoul Behrend and Josselin Desmars and Erick Meza and Alvaro Alvarez-Candal and Wolfgang Beisker and Altair R. Gomes-J{\'u}nior and Bruno E. Morgado and F. Roques and Fr{\'e}d{\'e}ric Vachier and J{\'e}r{\^o}me Berthier and Thomas G. Mueller and Jos{\'e} Mar{\'i}a Madiedo and Ozan Unsalan and Eda Sonbas and N. Karaman and Orhan Erece and Derya Koseoglu and Tuncay Ozisik and Sevgi Kalkan and Y. Guney and M Shakhs Niaei and Onur Satir and C Yesilyaprak and cC. Puskullu and A. Kabas and Osman Mirza Demircan and John Alikakos and V. Charmandaris and Giuseppe Leto and J. M. Ohlert and Jean Marc Christille and R{\'o}bert Szak{\'a}ts and A. tak{\'a}csn{\'e} Farkas and Erika Varga-Vereb{\'e}lyi and G{\'a}bor Marton and Anna Marciniak and Przemysław Bartczak and Toni Santana-Ros and M. Butkiewicz-Ba̧k and Grzegorz Dudziński and V{\'i}ctor Al{\'i}-Lagoa and Kosmas Gazeas and L. Tzouganatos and N. Paschalis and Vasileios Tsamis and Agust{\'i}n S{\'a}nchez-Lavega and Santiago P{\'e}rez-Hoyos and Ricardo Hueso and Jos'e Carlos Guirado and V. Peris and Ram{\'o}n Iglesias-Marzoa},
Haumea—one of the four known trans-Neptunian dwarf planets—is a very elongated and rapidly rotating body. In contrast to other dwarf planets, its size, shape, albedo and density are not well constrained. The Centaur Chariklo was the first body other than a giant planet known to have a ring system, and the Centaur Chiron was later found to possess something similar to Chariklo’s rings. Here we report observations from multiple Earth-based observatories of Haumea passing in front of a distant… 
Orbits around the dwarf planet Haumea
  • P. Carvalho
  • Physics, Geology
    Journal of Physics: Conference Series
  • 2019
. The dwarf planet Haumea is a very interesting celestial body due to the characteristics of its physical form and also the recently observed ring. A Kuiper Belt object, Haumea is a triaxial
The dynamics of rings around Centaurs and Trans-Neptunian objects
Ring dynamics around non-axisymmetric bodies with application to Chariklo and Haumea
Dense and narrow rings have been discovered recently around the small Centaur object Chariklo1 and the dwarf planet Haumea2, while being suspected around the Centaur Chiron3, although this point is
N-body Simulations of the Ring Formation Process around the Dwarf Planet Haumea
Haumea is the only known trans-Neptunian object with a ring. The ring is in a position that causes a 3:1 spin-orbit resonance with the rotational period of Haumea, which has a triaxial shape. The
Measuring the Severity of Close Encounters Between Ringed Small Bodies and Planets
Rings have recently been discovered around the trans-Neptunian object (TNO) 136108 Haumea and the Centaur 10199 Chariklo. Rings are also suspected around the Centaur 2060 Chiron. As planetary close
On the location of the ring around the dwarf planet Haumea
The recently discovered ring around the dwarf planet (136108) Haumea is located near the 1:3 resonance between the orbital motion of the ring particles and the spin of Haumea. In the current work is
A multi-chord stellar occultation by the large trans-Neptunian object (174567) Varda
We present results from the first recorded stellar occultation by the large trans-Neptunian object (174567) Varda that was observed on September 10$^{\rm th}$, 2018. Varda belongs to the
Ring dynamics around an oblate body with an inclined satellite: the case of Haumea
  • F. Marzari
  • Physics, Geology
    Astronomy & Astrophysics
  • 2020
Context. The recent discovery of rings and massive satellites around minor bodies and dwarf planets suggests that they may often coexist, as for example around Haumea. Aims. A ring perturbed by an


A ring system detected around the Centaur (10199) Chariklo
Observations of a multichord stellar occultation revealed the presence of a ring system around (10199) Chariklo, which is a Centaur—that is, one of a class of small objects orbiting primarily between Jupiter and Neptune—with an equivalent radius of 124  9 kilometres.
On the mass and origin of Chariklo's rings
Observations in 2013 and 2014 of the Centaur 10199 Chariklo and its ring system consistently indicated that the radial width of the inner, more massive ring varies with longitude. That strongly
Centaurs are minor planets orbiting between Jupiter and Neptune that have or had crossing orbits with one or more giant planets. Recent observations and reinterpretation of previous observations have
The Size and Shape of the Oblong Dwarf Planet Haumea
Abstract We use thermal radiometry and visible photometry to constrain the size, shape, and albedo of the large Kuiper belt object Haumea. The correlation between the visible and thermal photometry
A Pluto-like radius and a high albedo for the dwarf planet Eris from an occultation
The observation of a multi-chord stellar occultation by Eris on 6 November 2010 is reported, consistent with a spherical shape for Eris, and it is anticipated that this atmosphere may periodically sublimate as Eris approaches its perihelion, at 37.8 astronomical units from the Sun.
Albedo and atmospheric constraints of dwarf planet Makemake from a stellar occultation
The disappearances and reappearances of the star were abrupt, showing that Makemake has no global Pluto-like atmosphere at an upper limit of 4–12 nanobar (1σ) for the surface pressure, although a localized atmosphere is possible.
The Short Rotation Period of Hi'iaka, Haumea's Largest Satellite
Hi’iaka is the larger outer satellite of the dwarf planet Haumea. Using relative photometry from the Hubble Space Telescope and Magellan and a phase dispersion minimization analysis, we have
A mid-term astrometric and photometric study of trans-Neptunian object (90482) Orcus
From time series CCD observations of a fixed and large star field that contained the binary trans-Neptunian object (90482) Orcus (formerly 2004 DW), taken during a period of 33 days, we have been
“TNOs are Cool”: A survey of the trans-Neptunian region
Context. A group of trans-Neptunian objects (TNOs) are dynamically related to the dwarf planet 136108 Haumea. Ten of them show strong indications of water ice on their surfaces, are assumed to have
Density of asteroids