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Astrometric monitoring of stars provides a promising method for discovery of low-mass planets around nearby Sun-like stars. The astronomical community has proposed several telescopes designed to perform high-precision astrometric…

Solar and Stellar Astrophysics · Physics 2026-05-20 Conaire Deagan , Benjamin T. Montet , P. Tuthill , M. Ferraro , R. Lyu , E. Sheehan

Near Earth Objects (NEOs) are a transient population of small bodies with orbits near or in the terrestrial planet region. They represent a mid-stage in the dynamical cycle of asteroids and comets, which starts with their removal from the…

Using a fully autonomous spacecraft - Bering - we propose to detect and study sub-km asteroids from an orbit within the asteroid Main Belt. The main purpose of the proposed Bering mission is to detect a statistically significant sample of…

Previous work has demonstrated orbital stability for 100 Myr of initially near-circular and coplanar small bodies in a region termed the 'Earth-Mars belt' from 1.08 au $< a <$ 1.28 au. Via numerical integration of 3000 particles, we studied…

Earth and Planetary Astrophysics · Physics 2020-10-14 Yukun Huang , Brett Gladman

We present an approach that significantly increases the sensitivity for finding and tracking small and fast near Earth asteroids (NEA's). This approach relies on a combined use of a new generation of high-speed cameras which allow short,…

Instrumentation and Methods for Astrophysics · Physics 2014-08-20 Michael Shao , Bijan Nemati , Chengxing Zhai , Slava G. Turyshev , Jagmit Sandhu , Gregg W. Hallinan , Leon K. Harding

We report 491 new near-infrared spectroscopic measurements of 420 near-Earth objects (NEOs) collected on the NASA InfraRed Telescope Facility (IRTF) as part of the MIT-Hawaii NEO Spectroscopic Survey (MITHNEOS). These measurements were…

We present new thermophysical model (TPM) fits of 1,847 asteroids, deriving thermal inertia, diameter, and Bond and visible geometric albedo. We use thermal flux measurements obtained by the Wide-field Infrared Survey Explorer (WISE; Wright…

Earth and Planetary Astrophysics · Physics 2023-05-04 Denise Hung , Josef Hanuš , Joseph R. Masiero , David J. Tholen

Since July 2014, the ESA Gaia mission has been surveying the entire sky down to magnitude 20.7 in the visible. In addition to the millions of stars, thousands of Solar System Objects (SSOs) are observed daily. By comparing their positions…

[abridged] We carry out numerical simulations to gauge the Gaia potential for precision astrometry of exoplanets orbiting a sample of known dM stars within 30 pc from the Sun. (1) It will be possible to accurately determine orbits and…

Earth and Planetary Astrophysics · Physics 2015-06-17 A. Sozzetti , P. Giacobbe , M. G. Lattanzi , G. Micela , R. Morbidelli , G. Tinetti

Determining the size and orbital distribution of the population of near-Earth asteroids (NEAs) is the focus of intense research, with the most recent models converging to a population of approximately $1000$ NEAs larger than 1 km and up to…

Earth and Planetary Astrophysics · Physics 2016-12-21 Pasquale Tricarico

Astrometry can detect rocky planets in a broad range of masses and orbital distances and measure their masses and three-dimensional orbital parameters, including eccentricity and inclination, to provide the properties of terrestrial…

To date, rings are found around a Centaur (10199) Chariklo, trans-neptunian objects (TNOs) (136108) Haumea, and (50000) Quaoar. These discoveries suggest that asteroidal ring systems may be common, particularly in the outer solar system.…

Earth and Planetary Astrophysics · Physics 2024-06-04 Ren Ikeya , Naoyuki Hirata

We present new astrometric measurements from our ongoing monitoring campaign of the HR 8799 directly imaged planetary system. These new data points were obtained with NIRC2 on the W.M. Keck II 10 meter telescope between 2009 and 2014. In…

Earth and Planetary Astrophysics · Physics 2016-07-20 Q. M. Konopacky , C. Marois , B. A. Macintosh , R. Galicher , T. S. Barman , S. A. Metchev , B. Zuckerman

Context. We report the exploitation of a sample of epoch astrometry for 157 000 asteroids, the same object in the Gaia Data Release 3, extended over the time coverage planned for the Gaia DR4, which is not expected before the end of 2025.…

Earth and Planetary Astrophysics · Physics 2023-12-13 Gaia Collaboration , P. David , F. Mignard , D. Hestroffer , P. Tanga

Many asteroids are rubble piles with irregular shapes. While the irregular shapes of large asteroids may be attributed to collisional events, those of small asteroids may result from not only impact events but also rotationally induced…

Earth and Planetary Astrophysics · Physics 2018-08-08 Masatoshi Hirabayashi , Daniel J. Scheeres

The ISOPHOT Serendipity Survey (ISOSS) covered approximately 15 % of the sky at a wavelength of 170 micron while the ISO satellite was slewing from one target to the next. By chance ISOSS slews went over many solar system objects (SSOs). We…

Astrophysics · Physics 2009-11-07 T. G. Mueller , S. Hotzel , M. Stickel

Protoplanetary disks with inner dust cavities (often referred to as "transition disks") are potential signposts of planet formation. We use Gaia astrometry to search for planetary and stellar companions in a sample of 98 transition disks,…

Satellites around large asteroids are preferentially found among those with the most rapid rotation and elongated shape. The taxonomic statistics are similarly skewed; in total, 13 asteroids larger than 100 km are known to have satellites,…

Earth and Planetary Astrophysics · Physics 2025-05-07 Kevin J. Walsh , Ronald-Louis Ballouz , Harrison F. Agrusa , Josef Hanus , Martin Jutzi , Patrick Michel

We show that a number of claims made in Myhrvold (2018) (hereafter M2018b) regarding the WISE data and thermal modeling of asteroids are incorrect. That paper provides thermal fit parameter outputs for only two of the about 150,000 object…

Earth and Planetary Astrophysics · Physics 2018-11-06 Edward Wright , Amy Mainzer , Joseph Masiero , Tommy Grav , Roc Cutri , James Bauer

We introduce a new method of searching for and characterizing extra-solar planets. We show that by monitoring the center-of-light motion of microlensing alerts using the next generation of high precision astrometric instruments the…

Astrophysics · Physics 2009-10-31 Neda Safizadeh , Neal Dalal , Kim Griest
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