Near Earth Asteroids with measurable Yarkovsky effect

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10173977" target="_blank" >RIV/00216208:11320/13:10173977 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.icarus.2013.02.004" target="_blank" >http://dx.doi.org/10.1016/j.icarus.2013.02.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.icarus.2013.02.004" target="_blank" >10.1016/j.icarus.2013.02.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Near Earth Asteroids with measurable Yarkovsky effect

Popis výsledku v původním jazyce

We seek evidence of the Yarkovsky effect among Near Earth Asteroids (NEAs) by measuring the Yarkovsky-related orbital drift from the orbital fit. To prevent the occurrence of unreliable detections we employ a high precision dynamical model, including theNewtonian attraction of 16 massive asteroids and the planetary relativistic terms, and a suitable astrometric data treatment. We find 21 NEAs whose orbital fits show a measurable orbital drift with a signal to noise ratio (SNR) greater than 3. The bestdetermination is for asteroid (101955) 1999 RQ(36), with an SNR similar to 200. In some cases it is possible to constrain physical quantities otherwise unknown. Furthermore, the distribution of the detected orbital drifts shows an excess of retrograde rotators that can be connected to the delivery mechanism from the most important NEA feeding resonances and allows us to infer the obliquity distribution of NEAs. We discuss the implications of the Yarkovsky effect for impact predictions. I

Název v anglickém jazyce

Near Earth Asteroids with measurable Yarkovsky effect

Popis výsledku anglicky

We seek evidence of the Yarkovsky effect among Near Earth Asteroids (NEAs) by measuring the Yarkovsky-related orbital drift from the orbital fit. To prevent the occurrence of unreliable detections we employ a high precision dynamical model, including theNewtonian attraction of 16 massive asteroids and the planetary relativistic terms, and a suitable astrometric data treatment. We find 21 NEAs whose orbital fits show a measurable orbital drift with a signal to noise ratio (SNR) greater than 3. The bestdetermination is for asteroid (101955) 1999 RQ(36), with an SNR similar to 200. In some cases it is possible to constrain physical quantities otherwise unknown. Furthermore, the distribution of the detected orbital drifts shows an excess of retrograde rotators that can be connected to the delivery mechanism from the most important NEA feeding resonances and allows us to infer the obliquity distribution of NEAs. We discuss the implications of the Yarkovsky effect for impact predictions. I

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GA205%2F08%2F0064" target="_blank" >GA205/08/0064: Jarkovského a YORP jevy v translační a rotační dynamice asteroidů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Icarus

ISSN

0019-1035

e-ISSN

—

Svazek periodika

224

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

1-13

Kód UT WoS článku

000318128500001

EID výsledku v databázi Scopus

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