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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…

Earth and Planetary Astrophysics · Physics 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 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.…

Earth and Planetary Astrophysics · Physics 2021-07-16 Joseph R. Masiero , A. K. Mainzer , J. M. Bauer , R. M. Cutri , T. Grav , E. Kramer , J. Pittichová , E. L. Wright

The Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) spacecraft has been conducting a two-band thermal infrared survey to detect and characterize asteroids and comets since its reactivation in Dec 2013. Using the observations…

Earth and Planetary Astrophysics · Physics 2020-02-20 Joseph R. Masiero , A. K. Mainzer , J. M. Bauer , R. M. Cutri , T. Grav , E. Kramer , J. Pittichová , S. Sonnett , E. L. Wright

The Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) reactivation mission has completed its third year of surveying the sky in the thermal infrared for near-Earth asteroids and comets. NEOWISE collects simultaneous…

Earth and Planetary Astrophysics · Physics 2017-10-04 Joseph R. Masiero , C. Nugent , A. K. Mainzer , E. L. Wright , J. M. Bauer , R. M. Cutri , T. Grav , E. Kramer , S. Sonnett

Enhancements to the science data processing pipeline of NASA's Wide-field Infrared Explorer (WISE) mission, collectively known as NEOWISE, resulted in the detection of $>$158,000 minor planets in four infrared wavelengths during the fully…

Earth and Planetary Astrophysics · Physics 2015-06-11 A. Mainzer , T. Grav , J. Masiero , J. Bauer , R. M. Cutri , R. S. McMillan , C. R. Nugent , D. Tholen , R. Walker , E. L. Wright

We present initial results from the Wide-field Infrared Survey Explorer (WISE), a four-band all-sky thermal infrared survey that produces data well suited to measuring the physical properties of asteroids, and the NEOWISE enhancement to the…

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…

Automated asteroid detection routines set requirements on the number of detections, signal-to-noise ratio, and the linearity of the expected motion in order to balance completeness, reliability, and time delay after data acquisition when…

Earth and Planetary Astrophysics · Physics 2018-08-08 Joseph R. Masiero , E. Redwing , A. K. Mainzer , J. M. Bauer , R. M. Cutri , T. Grav , E. Kramer , C. R. Nugent , S. Sonnett , E. L. Wright

Context. Mars-crossing asteroids (MCs) are a dynamically unstable group between the main belt and the near-Earth populations. Characterising the physical properties of a large sample of MCs can help to understand the original sources of…

Earth and Planetary Astrophysics · Physics 2017-07-12 Víctor Alí-Lagoa , Marco Delbo'

With the NEOWISE portion of the \emph{Wide-field Infrared Survey Explorer} (WISE) project, we have carried out a highly uniform survey of the near-Earth object (NEO) population at thermal infrared wavelengths ranging from 3 to 22 $\mu$m,…

We present preliminary diameters and albedos for 13511 MBAs that were observed during the 3-Band Cryo phase of the WISE survey (after the outer cryogen tank was exhausted) and as part of the NEOWISE Post-Cryo Survey (after the inner cryogen…

Earth and Planetary Astrophysics · Physics 2015-06-11 Joseph R. Masiero , A. K. Mainzer , T. Grav , J. M. Bauer , R. M. Cutri , C. Nugent , M. S. Cabrera

We analyzed 82,548 carefully curated observations of 4420 asteroids with Wide-field Infrared Survey Explorer (WISE) four-band data to produce estimates of diameters and infrared emissivities. We also used these diameter values in…

Earth and Planetary Astrophysics · Physics 2021-11-17 Nathan Myhrvold , Pavlo Pinchuk , Jean-Luc Margot

Thermal infrared measurements of near-Earth objects provide critical data for constraining their physical properties such as size. The NEOWISE mission has been conducting an all-sky infrared survey to gather such data and improve our…

Earth and Planetary Astrophysics · Physics 2020-04-01 Joseph R. Masiero , Patrice Smith , Lean D. Teodoro , A. K. Mainzer , R. M. Cutri , T. Grav , E. L. Wright

We present revised near-infrared albedo fits of 2835 Main Belt asteroids observed by WISE/NEOWISE over the course of its fully cryogenic survey in 2010. These fits are derived from reflected-light near-infrared images taken simultaneously…

Earth and Planetary Astrophysics · Physics 2015-06-22 Joseph R. Masiero , T. Grav , A. K. Mainzer , C. R. Nugent , J. M. Bauer , R. Stevenson , S. Sonnett

With thermal infrared observations detected by the NEOWISE project, we have measured diameters for 1742 minor planets that were also observed by the Infrared Astronomical Satellite (IRAS). We have compared the diameters and albedo derived…

Earth and Planetary Astrophysics · Physics 2015-05-28 A. Mainzer , T. Grav , J. Masiero , J. Bauer , E. Wright , R. M. Cutri , R. Walker , R. S. McMillan

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

The cryogenic WISE mission in 2010 was extremely sensitive to asteroids and not biased against detecting dark objects. The albedos of 428 Near Earth Asteroids (NEAs) observed by WISE during its fully cryogenic mission can be fit quite well…

Earth and Planetary Astrophysics · Physics 2016-09-21 Edward L. Wright , Amy Mainzer , Joseph Masiero , Tommy Grav , James Bauer

The \emph{Wide-field Infrared Survey Explorer} has surveyed the entire sky at four infrared wavelengths with greatly improved sensitivity and spatial resolution compared to its predecessors, the \emph{Infrared Astronomical Satellite} and…

We present the preliminary results of an analysis of the sub-populations within the near-Earth asteroids, including the Atens, Apollos, Amors, and those that are considered potentially hazardous using data from the Wide-field Infrared…

Earth and Planetary Astrophysics · Physics 2015-06-05 A. Mainzer , T. Grav , J. Masiero , J. Bauer , R. S. McMillan , J. Giorgini , T. Spahr , R. M. Cutri , D. J. Tholen , R. Jedicke , R. Walker , E. Wright , C. R. Nugent

With the Wide-field Infrared Survey Explorer (WISE; Wright et al. 2010), we have observed over 157,000 minor planets (Mainzer et al. 2011). Included in these are a number of near-Earth objects, Main Belt Asteroids, and irregular satellites…

Earth and Planetary Astrophysics · Physics 2011-05-06 A. Mainzer , T. Grav , J. Masiero , J. Bauer , E. Wright , R. M. Cutri , R. S. McMillan , M. Cohen , M. Ressler , P. Eisenhardt
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