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The Near-Earth Object Surveyor Mission
A. K. Mainzer, Joseph R. Masiero, Paul A. Abell +34
The Near-Earth Object (NEO) Surveyor mission is a NASA observatory designed to discover and characterize near-Earth asteroids and comets. The mission's primary objective is to find…
Asteroid Diameters and Albedos from NEOWISE Reactivation Mission Years Four and Five
Joseph R. Masiero, A. K. Mainzer, J. M. Bauer +6
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 comet…
Small and Nearby NEOs Observed by NEOWISE During the First Three Years of Survey: Physical Properties
Joseph R. Masiero, E. Redwing, A. K. Mainzer +7
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…
Behavioral Characteristics and CO+CO2 Production Rates of Halley-Type Comets Observed by NEOWISE
Joshua D. Rosser, James M. Bauer, Amy K. Mainzer +8
From the entire dataset of comets observed by NEOWISE, we have analyzed 11 different Halley-Type Comets (HTCs) for dust production rates, CO+CO2 production rates, and nucleus sizes…
NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos
Joseph R. Masiero, C. Nugent, A. K. Mainzer +6
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 as…
3D shape of asteroid (6)~Hebe from VLT/SPHERE imaging: Implications for the origin of ordinary H chondrites
M. Marsset, B. Carry, C. Dumas +15
Context. The high-angular-resolution capability of the new-generation ground-based adaptive-optics camera SPHERE at ESO VLT allows us to assess, for the very first time, the crater…
Observed asteroid surface area in the thermal infrared
C. R. Nugent, A. Mainzer, J. Masiero +5
The rapid accumulation of thermal infrared observations and shape models of asteroids has led to increased interest in thermophysical modeling. Most of these infrared observations…
NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos
C. R. Nugent, A. Mainzer, J. Bauer +6
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…
The NEOWISE-Discovered Comet Population and the CO+CO2 production rates
James M. Bauer, Rachel Stevenson, Emily Kramer +19
The 163 comets observed during the WISE/NEOWISE prime mission represent the largest infrared survey to date of comets, providing constraints on dust, nucleus sizes, and CO+CO2 prod…
NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos
C. R. Nugent, A. Mainzer, J. Masiero +7
We present preliminary diameters and albedos for 7,959 asteroids detected in the first year of the NEOWISE Reactivation mission. 201 are near-Earth asteroids (NEAs). 7,758 are Main…
NEOWISE: Observations of the Irregular Satellites of Jupiter and Saturn
Tommy Grav, James M. Bauer, Amy K. Mainzer +5
We present thermal model fits for 11 Jovian and 3 Saturnian irregular satellites based on measurements from the WISE/NEOWISE dataset. Our fits confirm spacecraft-measured diameters…
Binary Candidates in the Jovian Trojan and Hilda Populations from NEOWISE Lightcurves
S. Sonnett, A. Mainzer, T. Grav +2
Determining the binary fraction for a population of asteroids, particularly as a function of separation between the two components, helps describe the dynamical environment at the…
Main Belt Asteroids with WISE/NEOWISE: Near-Infrared Albedos
Joseph R. Masiero, T. Grav, A. K. Mainzer +4
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…
Initial Performance of the NEOWISE Reactivation Mission
A. Mainzer, J. Bauer, R. M. Cutri +32
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 t…
Main-Belt Comet P/2012 T1 (PANSTARRS)
Henry H. Hsieh, Heather M. Kaluna, Bojan Novakovic +25
We present initial results from observations and numerical analyses aimed at characterizing main-belt comet P/2012 T1 (PANSTARRS). Optical monitoring observations were made between…
Limits on the Size and Orbit Distribution of Main Belt Comets
S. Sonnett, J. Kleyna, R. Jedicke +1
The seven known main belt comets (MBCs) have orbital characteristics of main belt asteroids yet exhibit dust ejection like comets. In order to constrain their physical and orbital…