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Near-Earth Objects (NEOs) that orbit the Sun on or within Earth's orbit are tricky to detect for Earth-based observers due to their proximity to the Sun in the sky. These small bodies hold clues to the dynamical history of the inner solar…

Asteroid discoveries are essential for planetary-defense efforts aiming to prevent impacts with Earth, including the more frequent megaton explosions from decameter impactors. While large asteroids ($\geq$100 km) have remained in the main…

The size distribution is determined directly from the current known Kuiper Belt Objects (KBOs). We found that there is a peak for the size distribution around 230 km in diameter. For the objects larger than 230 km, the KBOs populate as…

Astrophysics · Physics 2007-05-23 Cheng-Pin Chen , Ing-Guey Jiang

A statistical analysis of brightness variability of asteroids reveals how their shapes evolve from elongated to rough spheroidal forms, presumably driven by impact-related phenomena. Based on the Sloan Digital Sky Survey Moving Object…

Astrophysics · Physics 2009-11-13 Gyula M. Szabo , Laszlo L. Kiss

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

Near-Earth Asteroids (NEAs) are a key testbed for investigations into planet formation, asteroid dynamics, and planetary defense initiatives. These studies rely on understanding NEA sizes, albedo distributions, and regolith properties.…

We used WISE-derived geometric albedos (p_V) and diameters, as well as geometric albedos and diameters from the literature, to produce more accurate diurnal Yarkovsky drift predictions for 540 near-Earth asteroids (NEAs) out of the current…

Earth and Planetary Astrophysics · Physics 2015-06-05 C. R. Nugent , A. Mainzer , J. Masiero , T. Grav , J. Bauer

Centaurs are the transitional population between trans-Neptunian objects (TNOs) and Jupiter-family comets. For this reason it is possible to access the smaller ones, which is more difficult to do with the TNO population. The goal of this…

Detecting heat from minor planets in the outer solar system is challenging, yet it is the most efficient means for constraining the albedos and sizes of Kuiper Belt Objects (KBOs) and their progeny, the Centaur objects. These physical…

We present a method for calculating precise distances to asteroids using only two nights of data from a single location --- far too little for an orbit --- by exploiting the angular reflex motion of the asteroids due to Earth's axial…

Earth and Planetary Astrophysics · Physics 2015-10-07 Aren N. Heinze , Stanimir Metchev

Only a very small fraction of the asteroid population at size scales comparable to the object that exploded over Chelyabinsk, Russia has been discovered to date, and physical properties are poorly characterized. We present previously…

Earth and Planetary Astrophysics · Physics 2015-06-17 A. Mainzer , J. Bauer , T. Grav , J. Masiero , R. M. Cutri , E. L. Wright , C. R. Nugent , R. Stevenson , E. Clyne , G. Cukrov , F. Masci

Dynamical mass estimates for the main asteroid belt and the trans-Neptunian Kuiper belt have been found from their gravitational influence on the motion of planets. Discrete rotating models consisting of moving material points have been…

Earth and Planetary Astrophysics · Physics 2018-11-14 E. V. Pitjeva , N. P. Pitjev

Despite the large amount of high quality data generated in recent space encounters with asteroids, the majority of our knowledge about these objects comes from ground based observations. Asteroids travelling in orbits that are potentially…

Earth and Planetary Astrophysics · Physics 2017-05-17 T. Santana-Ros , G. Dudziński , P. Bartczak

Gaia is an astrometric mission that will be launched in 2013 and set on L2 point of Lagrange. It will observe a large number of Solar System Objets (SSO) down to magnitude 20. The Solar System Science goal is to map thousand of Main Belt…

Earth and Planetary Astrophysics · Physics 2016-08-30 D. Bancelin , D. Hestroffer , W. Thuillot

Aims: Our objectives were first to evaluate the possibility for using the NUV absorption as diagnostics of hydrated minerals based on the recent datasets of primitive asteroids and hydrated carbonaceous chondrites, and second to investigate…

Earth and Planetary Astrophysics · Physics 2023-04-26 Eri Tatsumi , Faith Vilas , Julia de León , Marcel Popescu , Sunao Hasegawa , Takahiro Hiroi , Fernando Tinaut-Ruano , Javier Licandro

Possible connections between the physical properties of Near-Earth Asteroids (NEA) and their orbital evolution were explored, with emphasis on binary asteroids. Our main starting hypothesis, suggested from the observations, was that the NEA…

Astrophysics · Physics 2007-05-23 Mihailo Cubrovic

The IRAC camera on the Spitzer Space Telescope observed 2175 Near Earth Objects (NEOs) during its Warm Mission phase, primarily in three large surveys, and also in a small number of a dedicated projects. In this paper we present the final…

Earth and Planetary Astrophysics · Physics 2025-03-10 Joseph L. Hora , Alicia J. Allen , David E. Trilling , Howard A. Smith , Andrew McNeill

We studied the Near-Earth Asteroid (NEA) candidates posted on the Minor Planet Center's Near-Earth Object Confirmation Page (NEOCP) between years 2013 and 2016. Out of more than 17,000 NEA candidates, while the majority became either new…

Earth and Planetary Astrophysics · Physics 2018-06-12 Peter Vereš , Matthew J. Payne , Matthew J. Holman , Davide Farnocchia , Gareth V. Williams , Sonia Keys , Ian Boardman

Upcoming telescopes like the Vera Rubin Observatory (VRO) and the Argus Array will image large fractions of the sky multiple times per night yielding numerous Near Earth Object (NEO) discoveries. When asteroids are measured with short…

Earth and Planetary Astrophysics · Physics 2025-02-13 Maryann Benny Fernandes , Daniel Scolnic , Erik Peterson , Chengxing Zhai , Tyler Linder , Maria Acevedo , Daniel Reichart

We developed two different point spread function (PSF) analysis techniques for discovering wide separation binary asteroids in wide field surveys. We then applied these techniques to images of main belt asteroids in the 4 to 60 km size…

Earth and Planetary Astrophysics · Physics 2022-06-22 James Ou , Christoph Baranec , Schelte J. Bus