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Delbo, Marco und Dell'Oro, A. und Harris, Alan W. und Mottola, Stefano und Mueller, Michael (2005) The thermal inertia of near-Earth asteroids: Implications for their surface structure and the Yarkovsky effect. IAU Symposium No 229; ACM 2005, 2005-08-07 - 2005-08-12, Buzios, RJ (Brasilien). (nicht veröffentlicht)
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Kurzfassung
We have used a new method to analyze the largest available database of thermal- infrared observations of near-Earth asteroids (NEAs) in order to constrain their thermal inertia. We have obtained a best fit value of 500+/-100 J m-2 s-0.5 K-1, or about 10 times that of the lunar soil. Our estimate is significantly larger than the value commonly used in the Yarkovsky model of the origin of NEAs. The value of the thermal inertia is one of the major sources of uncertainty in the collision probability prediction of potentially hazardous NEAs, such as 1950 DA. The value of thermal inertia that we have derived is incompatible with surfaces dominated by bare rock for these bodies.
| elib-URL des Eintrags: | https://elib.dlr.de/21990/ | ||||||||||||||||||||||||
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| Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||
| Titel: | The thermal inertia of near-Earth asteroids: Implications for their surface structure and the Yarkovsky effect | ||||||||||||||||||||||||
| Autoren: |
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| Datum: | August 2005 | ||||||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||||||
| Status: | nicht veröffentlicht | ||||||||||||||||||||||||
| Stichwörter: | asteroids | ||||||||||||||||||||||||
| Veranstaltungstitel: | IAU Symposium No 229; ACM 2005 | ||||||||||||||||||||||||
| Veranstaltungsort: | Buzios, RJ (Brasilien) | ||||||||||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||
| Veranstaltungsdatum: | 2005-08-07 - 2005-08-12 | ||||||||||||||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||||||||||
| HGF - Programm: | Weltraum (alt) | ||||||||||||||||||||||||
| HGF - Programmthema: | W EW - Erforschung des Weltraums | ||||||||||||||||||||||||
| DLR - Schwerpunkt: | Weltraum | ||||||||||||||||||||||||
| DLR - Forschungsgebiet: | W EW - Erforschung des Weltraums | ||||||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | W - Vorhaben Asteroiden und Kometen (alt) | ||||||||||||||||||||||||
| Standort: | Berlin-Adlershof | ||||||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Planetenforschung > Asteroiden und Kometen | ||||||||||||||||||||||||
| Hinterlegt von: | Müller, Michael | ||||||||||||||||||||||||
| Hinterlegt am: | 01 Mär 2006 | ||||||||||||||||||||||||
| Letzte Änderung: | 27 Apr 2009 04:57 |
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