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The Near-Earth Object Wide-Field Infrared Survey Explorer (NEOWISE) mission continues to detect, track, and characterize minor planets. We present diameters and albedos calculated from observations taken during the second year since the…

地球与行星天体物理 · 物理学 2016-08-31 C. R. Nugent , A. Mainzer , J. Bauer , R. M. Cutri , E. A. Kramer , T. Grav , J. Masiero , S. Sonnett , E. L. Wright

We present results from the Large Adaptive optics Survey for Substellar Objects (LASSO), where the goal is to directly image new substellar companions (<70 M$_{Jup}$) at wide orbital separations ($\gtrsim$50 AU) around young ($\lesssim$300…

The goal of this work is to determine the physical characteristics of resonant, detached and scattered disk objects in the transneptunian region, observed mainly in the framework of the "TNOs are Cool!" Herschel Open Time Key Program. Based…

地球与行星天体物理 · 物理学 2020-07-01 A. Farkas-Takács , Cs. Kiss , E. Vilenius , G. Marton , T. G. Müller , M. Mommert , J. Stansberry , E. Lellouch , P. Lacerda , A. Pál

NASA's Wide-field Infrared Survey Explorer (WISE) spacecraft has been brought out of hibernation and has resumed surveying the sky at 3.4 and 4.6 um. The scientific objectives of the NEOWISE reactivation mission are to detect, track, and…

NEO Surveyor will detect asteroids and comets using mid-infrared thermal emission, however ground-based followup resources will require knowledge of the expected visible light brightness in order to plan characterization observations. Here…

地球与行星天体物理 · 物理学 2024-09-10 Joseph R. Masiero , Tyler Linder , Amy Mainzer , Dar W. Dahlen , Yuna G. Kwon

In the framework of a 30-night spectroscopic survey of small near-Earth asteroids (NEAs) we present new results regarding the identification of olivine-rich objects. The following NEAs were classified as A-type using visible spectra…

地球与行星天体物理 · 物理学 2018-03-15 M. Popescu , D. Perna , M. A. Barucci , S. Fornasier , A. Doressoundiram , C. Lantz , F. Merlin , I. N. Belskaya , M. Fulchignoni

We present diameters and albedos computed for the near-Earth and Main Belt asteroids observed by the Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) spacecraft during the sixth and seventh years of its Reactivation mission.…

地球与行星天体物理 · 物理学 2021-07-16 Joseph R. Masiero , A. K. Mainzer , J. M. Bauer , R. M. Cutri , T. Grav , E. Kramer , J. Pittichová , E. L. Wright

Mid-infrared (mid-IR) observations of Near-Earth Objects (NEOs) have historically been a valuable tool for understanding their physical properties. However, the current state of mid-IR instruments on ground-based telescopes places several…

地球与行星天体物理 · 物理学 2025-06-18 Andy J. López-Oquendo , Joseph L. Hora , David E. Trilling , Howard A. Smith

We characterize mission profiles for human expeditions to near-Earth asteroids, Venus, and Mars. Near-Earth objects (NEOs) are the closest destinations beyond cis-lunar space and present a compelling target with capabilities already under…

空间物理 · 物理学 2016-10-19 Cyrus Foster , Matthew Daniels

We propose to use a modest fraction of the re-purposed Kepler mission time and apertures to greatly increase the quantity and quality of our knowledge of near-Earth asteroids (NEAs) rotation and shape. NEAs are important for understanding…

地球与行星天体物理 · 物理学 2013-09-11 Martin Elvis , José Luis Galache , Gareth V. Williams

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…

地球与行星天体物理 · 物理学 2022-06-22 Audrey Thirouin , Scott S. Sheppard

We perform high fidelity simulations of a wide-field telescopic survey searching for Near-Earth Objects (NEO) larger than 140\,m, focusing on the observational and detection model, detection efficiency and accuracy. As a test survey we…

地球与行星天体物理 · 物理学 2017-06-30 Peter Vereš , Steven R. Chesley

The largest trans-Neptunian objects (TNOs) represent an extremely diverse collection of primitive bodies in the outer solar system. The community typically refers to these objects as dwarf planets, though the IAU acknowledges only four TNOs…

地球与行星天体物理 · 物理学 2019-05-30 Noemí Pinilla-Alonso , John Stansberry , Bryan Holler

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…

地球与行星天体物理 · 物理学 2018-06-12 Peter Vereš , Matthew J. Payne , Matthew J. Holman , Davide Farnocchia , Gareth V. Williams , Sonia Keys , Ian Boardman

Low- and intermediate-mass ($\rm 0.8~M_\odot < M < 8~M_\odot$) stars that evolve into planetary nebulae (PNe) play an important role in tracing and driving Galactic chemical evolution. Spectroscopy of PNe enables access to both the initial…

太阳与恒星天体物理 · 物理学 2022-10-26 Catherine Manea , Harriet Dinerstein , N. C. Sterling , Greg Zeimann

We have combined the NEOWISE and Sloan Digital Sky Survey data to study the albedos of 24,353 asteroids with candidate taxonomic classifications derived using Sloan photometry. We find a wide range of moderate to high albedos for candidate…

地球与行星天体物理 · 物理学 2015-05-30 A. Mainzer , J. Masiero , T. Grav , J. Bauer , D. J. Tholen , R. S. McMillan , E. Wright , T. Spahr , R. M. Cutri , R. Walker , W. Mo , J. Watkins , E. Hand , C. Maleszewski

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 report follow-up observations of 477 program Near-Earth Asteroids (NEAs) using nine telescopes of the EURONEAR network having apertures between 0.3 and 4.2 m. Adding these NEAs to our previous results we now count 739 program NEAs…