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

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Rapid planetary rotation can cause the equilibrium shape of a planet to be oblate. While planetary oblateness has mostly been probed by examining the subtle ingress and egress features in photometric transit light curves, we investigate the…

Earth and Planetary Astrophysics · Physics 2020-07-31 B. Akinsanmi , S. C. C. Barros , N. C. Santos , M. Oshagh , L. M. Serrano

We present the results of an archival search for Trans-neptunian objects (TNOs) in an ecliptic field observed with Subaru in 2002. The depth of the search allowed us to find 20 new TNOs with magnitudes between R=24 and 27. We fit a double…

Astrophysics · Physics 2011-02-11 Cesar I. Fuentes , Matthew R. George , Matthew J. Holman

In this paper, we present observations of two high-resolution transit datasets obtained with ESPRESSO of the bloated sub-Saturn planet WASP-131~b. We have simultaneous photometric observations with NGTS and EulerCam. In addition, we…

We present the first-ever measurements of the surface colors and rotational properties of a recently discovered distant object in an unusual orbit 2016 ND21. In 2017, this object was close to its perihelion, which allowed us to observe it…

Earth and Planetary Astrophysics · Physics 2019-12-18 Tetiana Hromakina , Sergey Velichko , Irina Belskaya , Yurij Krugly , Aleksandr Sergeev

We illuminate dynamical properties of Kuiper Belt Objects (KBOs) in the 3:2 (``Plutino'') and 2:1 (``Twotino'') Neptunian resonances within the model of resonant capture and migration. We analyze a series of numerical integrations, each…

Astrophysics · Physics 2009-11-07 E. I. Chiang , A. B. Jordan

We present twenty-three transit light curves and seven occultation light curves for the ultra-short period planet WASP-43 b, in addition to eight new measurements of the radial velocity of the star. Thanks to this extensive data set, we…

The 2005 July 11 C313.2 stellar occultation by Charon was observed by three separate research groups, including our own, at observatories throughout South America. Here, the published timings from the three data sets have been combined to…

We announce the discovery of pulsations in HD 23642, the only bright eclipsing system in the Pleiades, based on light curves from the Transiting Exoplanet Survey Satellite (TESS). We measure 46 pulsation frequencies and attribute them to…

Solar and Stellar Astrophysics · Physics 2023-01-25 John Southworth , Simon J. Murphy , Kresimir Pavlovski

Orcus is an intermediate-size 1000km-scale Kuiper Belt Object in 3:2 mean-motion resonance with Neptune, in an orbit very similar to that of Pluto. We present visible and near-infrared photometry and spectroscopy obtained with the Keck…

Earth and Planetary Astrophysics · Physics 2015-05-19 Audrey Delsanti , Frédéric Merlin , Aurélie Guilbert , James Bauer , Bin Yang , Karen J. Meech

Context. We study the surface properties of transneptunian populations of Solar-system bodies. Aims. We investigate the surface characteristics of the dwarf planet (136472) Makemake and the resonant object (90482) Orcus. Methods. Using the…

Earth and Planetary Astrophysics · Physics 2015-06-11 I. N. Belskaya , S. Bagnulo , A. Stinson , G. P. Tozzi , K. Muinonen , Yu. G. Shkuratov , M. A. Barucci , S. Fornasier

We report observations of a stellar occultation by Pluto on 2019 July 17. A single-chord high-speed (time resolution $= 2\,$s) photometry dataset was obtained with a CMOS camera mounted on the Tohoku University 60 cm telescope (Haleakala,…

Earth and Planetary Astrophysics · Physics 2020-07-01 K Arimatsu , G. L. Hashimoto , M. Kagitani , T. Sakanoi , Y. Kasaba , R. Ohsawa , S. Urakawa

We present results of 6 years of observations, reduced and analyzed with the same tools in a systematic way. We report completely new data for 15 objects, for 5 objects we present a new analysis of previously published results plus…

Earth and Planetary Astrophysics · Physics 2015-05-18 A. Thirouin , J. L. Ortiz , R. Duffard , P. Santos-Sanz , F. J. Aceituno , N. Morales

2012 DR30 is a recently discovered Solar System object on a unique orbit, with a high eccentricity of 0.9867, a perihelion distance of 14.54 AU and a semi-major axis of 1109 AU, in this respect outscoring the vast majority of…

To incorporate the gravitational influence of Kuiper belt objects (KBOs) in planetary ephemerides, uniform-ring models are commonly employed. In this paper, for representing the KBO population residing in Neptune's 2:3 mean motion resonance…

Earth and Planetary Astrophysics · Physics 2024-11-07 Yue Chen , Jian Li

In the solar system, quasi-satellites move in a 1:1 mean motion resonance going around their host body like a retrograde satellite but their mutual separation is well beyond the Hill radius and the trajectory is not closed as they orbit the…

Earth and Planetary Astrophysics · Physics 2013-05-28 C. de la Fuente Marcos , R. de la Fuente Marcos

From 31 Earth-based and three Voyager 2 occultations spanning 1977--2006, we determine the orbital elements of the nine main Uranian rings with typical RMS residuals of 0.2 -- 0.4 km and 1-$\sigma$ errors in $a, ae,$ and $a\sin i$ of order…

Earth and Planetary Astrophysics · Physics 2024-01-10 Richard G. French , Matthew M. Hedman , Philip D. Nicholson , Pierre-Yves Longaretti , Colleen A. McGhee-French

V455 Aur is a detached eclipsing binary containing two F-stars in a 3.15-d orbit with a small eccentricity. Its eclipses were discovered in data from the Hipparcos satellite and a spectroscopic orbit was obtained by Griffin (2001, 2013).…

Solar and Stellar Astrophysics · Physics 2021-06-09 John Southworth