Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objects and Centaurs
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00537354" target="_blank" >RIV/67985815:_____/20:00537354 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202039054" target="_blank" >https://doi.org/10.1051/0004-6361/202039054</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202039054" target="_blank" >10.1051/0004-6361/202039054</a>
Alternative languages
Result language
angličtina
Original language name
Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objects and Centaurs
Original language description
We derive 37 precise astrometric positions for 19 TNOs and four Centaurs. Twenty-one of these events are presented here for the first time. Although about 68% of our results are based on single-chord detection, most have intrinsic precision at the submilliarcsecond level. Lower limits on the diameter of bodies such as Sedna, 2002 KX14, and Echeclus, and also shape constraints on 2002 VE95, 2003 FF128, and 2005 TV189 are presented as valuable byproducts.Conclusions. Using the Gaia DR2 catalog, we show that even a single detection of a stellar occultation allows improving the object ephemeris significantly, which in turn enables predicting a future stellar occultation with high accuracy. Observational campaigns can be efficiently organized with this help, and may provide a full physical characterization of the involved object, or even the study of topographic features such as satellites or rings.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
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
1432-0746
e-ISSN
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Volume of the periodical
644
Issue of the periodical within the volume
November
Country of publishing house
FR - FRANCE
Number of pages
15
Pages from-to
A40
UT code for WoS article
000595811300003
EID of the result in the Scopus database
2-s2.0-85097220751