Secular change in the spin states of asteroids due to radiation and gravitation torques: New detections and updates of the YORP effect

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00584411" target="_blank" >RIV/67985815:_____/24:00584411 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/24:10490561

Výsledek na webu

<a href="https://hdl.handle.net/11104/0353172" target="_blank" >https://hdl.handle.net/11104/0353172</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202348350" target="_blank" >10.1051/0004-6361/202348350</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Secular change in the spin states of asteroids due to radiation and gravitation torques: New detections and updates of the YORP effect

Popis výsledku v původním jazyce

Direct observational evidence of the YORP effect is the primary goal of our work. This includes both the YORP detection for new objects and an improvement in the accuracy of previously known detections. We carried out photometric observations of five nearEarth asteroids: (1862) Apollo, (2100) Ra-Shalom, (85989) 1999 JD6, (138852) 2000 WN10, and (161989) Cacus. Then we applied the lightcurve inversion method to all available data to determine the spin state and a convex shape model for each of the five studied asteroids. The YORP effect was modeled as a linear change of the rotation frequency upsilon equivalent to d omega/dt. In the case of (2100) Ra-Shalom, the analysis required that the spinaxis precession due to the solar gravitational torque also be included. We obtained two new detections of the YORP effect: (i) upsilon = (2.9 +/- 2.0) x 10(-9) rad d(-2) for (2100) Ra-Shalom, and (ii) upsilon = (5.5 +/- 0.7) x 10(-8) rad d(-2) for (138852) 2000 WN10.

Název v anglickém jazyce

Secular change in the spin states of asteroids due to radiation and gravitation torques: New detections and updates of the YORP effect

Popis výsledku anglicky

Direct observational evidence of the YORP effect is the primary goal of our work. This includes both the YORP detection for new objects and an improvement in the accuracy of previously known detections. We carried out photometric observations of five nearEarth asteroids: (1862) Apollo, (2100) Ra-Shalom, (85989) 1999 JD6, (138852) 2000 WN10, and (161989) Cacus. Then we applied the lightcurve inversion method to all available data to determine the spin state and a convex shape model for each of the five studied asteroids. The YORP effect was modeled as a linear change of the rotation frequency upsilon equivalent to d omega/dt. In the case of (2100) Ra-Shalom, the analysis required that the spinaxis precession due to the solar gravitational torque also be included. We obtained two new detections of the YORP effect: (i) upsilon = (2.9 +/- 2.0) x 10(-9) rad d(-2) for (2100) Ra-Shalom, and (ii) upsilon = (5.5 +/- 0.7) x 10(-8) rad d(-2) for (138852) 2000 WN10.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

682

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

25

Strana od-do

A93

Kód UT WoS článku

001163675500003

EID výsledku v databázi Scopus

2-s2.0-85184952370