Physical characterization of asteroid (16583) Oersted combining stellar occultation and photometric data
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10511118" target="_blank" >RIV/00216208:11320/25:10511118 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=oFzkysXiQh" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=oFzkysXiQh</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202556313" target="_blank" >10.1051/0004-6361/202556313</a>
Alternative languages
Result language
angličtina
Original language name
Physical characterization of asteroid (16583) Oersted combining stellar occultation and photometric data
Original language description
Context. We report a successful observation of a stellar occultation by asteroid (16583) Oersted, which provides a detailed physical characterization of its shape, spin state, and surface properties. Aims. Our goal is to determine the physical parameters of Oersted by combining multi-chord occultation timing, sparse optical photometry, and thermal infrared observations. Asteroids of this size (similar to 20 km) are rarely modeled in such detail due to observational limitations, making Oersted a valuable case study. Methods. We applied convex light curve inversion to sparse photometric data to derive an initial shape and spin state. We then refined and scaled this model using non-convex shape modeling with the All-Data Asteroid Modelling (ADAM) algorithm, incorporating constraints from the occultation chord profile. Thermophysical modeling based on WISE thermal infrared fluxes was used to determine the asteroid's effective diameter, geometric albedo, and thermal inertia. Results. The non-convex shape model reveals localized surface concavities and provides a size estimate consistent with radiometric measurements. The derived thermal inertia is typical for asteroids of comparable size. Conclusions. This work demonstrates the effectiveness of combining stellar occultations, photometry, and thermal infrared data for asteroid modeling and highlights the valuable contributions of citizen scientists, who played a key role in capturing the occultation and constraining the profile of the asteroid.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA22-17783S" target="_blank" >GA22-17783S: There is strength in numbers - Exploitation of Unistellar eVscope network of citizen scientiest for the study of asteroids</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
704
Issue of the periodical within the volume
prosinec
Country of publishing house
FR - FRANCE
Number of pages
8
Pages from-to
A67
UT code for WoS article
001633255500008
EID of the result in the Scopus database
2-s2.0-105024756622