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DART: Observations of the Didymos System

Wednesday, June 21, 2023, 10:40 AM
HCCC Humphreys

Alan Fitzsimmons
Kate Minker

Ground and space-based observations of the Didymos system

10:40 AM
Rivkin A. S.* Thomas C. A. Wong I. Holler B. Rozitis B. et al.
Observations of the Didymos System with NIRSpec and MIRI on JWST [#2300]
JWST observed the Didymos system in support of the DART mission. We report visible, near-infrared, and mid-infrared measurements taken roughly two months after the DART impact, including compositional and thermal analysis.
10:52 AM
Rozitis B.* Green S. F. Jackson S. L. Snodgrass C. Opitom C. et al.
Pre-Impact Photometric and Mid-Infrared Observations of NASA DART Target (65803) Didymos [#2115]
Surface properties of binary asteroid (65803) Didymos are constrained through photometric and mid-infrared observations acquired pre-impact of NASA DART. Model-to-measurement comparisons of the Yarkovsky effect hint at heterogeneous thermal inertia.
11:04 AM
Mondal B.* Eggl S.
Thermophysical Modeling and Yarkovsky Effect Uncertainty for the Didymos-Dimorphos System [#2547]
A new thermophysical solver for asteroids has been developed to understand effect of shape and properties on Yarkovsky effect. The model predicts Yarkovsky acceleration and thermophysical properties of the Didymos-Dimorphos system.
11:16 AM
de Leon J.* Tinaut-Ruano F. Opitom C. Migliorini A. La Forgia F. et al.
Spectral Characterization of Didymos During the DART Impact [#2372]
We present the results of an observational campaign conducted at the ESO 8-m VLT telescope (Chile) to obtain spectra (0.3-2.4 um) of Didymos before, during, and after the successful NASA’s DART impact (September 26, 2022).
11:28 AM
Murphy B. P.* Opitom C. Snodgrass C. Bagnulo S. Green S. F. et al.
MUSE Characterization of DART-Induced Dimorphos Ejecta [#2152]
Observations of the DART impact, utilizing the MUSE integral field spectrometer at the Very Large Telescope, have been extensively analyzed in this work. Here, we explore the morphological, spectral, and temporal evolution of the ejecta and tail.
11:40 AM
Li J.-Y.* Cheng A. F. Chesley S. Fahnestock E. G. Farnham T. L. et al.
Long-Term Evolution of Dimorphos’s Tail Observed by Hubble Space Telescope [#2278]
The long-term evolution of Dimorphos’ tail observed by the Hubble Space Telescope reveals the characteristics of cm-sized particles in the ejecta and the dust dynamical process in the binary system.
11:52 AM
Gray Z.* Bagnulo S. Granvik M. Cellino A. Kolokolova L. et al.
The Aftermath of the DART Impact: A Polarimetric Study of Didymos-Dimorphos [#2334]
We monitored Didymos-Dimorphos in imaging polarimetric mode from one month before, just hours after, to four months after the DART impact. Here we report our main results, including the polarimetric phase-curve (from phase angles 7-76°) and polarimetric maps.
12:04 PM
Weaver H. A.* Spencer J. R. Marchi S. Mottola S. Dello Russo N. et al.
Investigation of the Dart Impact Event from NASA’s Lucy Spacecraft [#2210]
We used the Lucy LOng Range Reconnaissance Imager (L’LORRI) on NASA’s Lucy spacecraft to observe the Didymos-Dimorphos system near the time of the DART impact event on 2022-Sep-26.
12:16 PM
Graykowski A.* Lambert R. A. Marchis F. Cazeneuve D. Dalba P. A. et al.
Citizen Science Observations of the Ejecta from Dimorphos after the DART Impact [#2297]
We discuss optical observations of Didymos before, during, and after the DART impact into Dimorphos from a network of Unistellar citizen science telescopes across the world. We estimate mass loss and observe a reddening of the ejecta on impact.


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