SwePub
Sök i LIBRIS databas

  Utökad sökning

id:"swepub:oai:DiVA.org:ltu-99300"
 

Sökning: id:"swepub:oai:DiVA.org:ltu-99300" > NEOMOD: A New Orbit...

  • Nesvorný, DavidDepartment of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA (författare)

NEOMOD: A New Orbital Distribution Model for Near-Earth Objects

  • Artikel/kapitelEngelska2023

Förlag, utgivningsår, omfång ...

  • Institute of Physics (IOP),2023
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:ltu-99300
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-99300URI
  • https://doi.org/10.3847/1538-3881/ace040DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Validerad;2023;Nivå 2;2023-08-08 (hanlid);Funder: Czech Science Foundation (21-11058S); NASA Planetary Defense Coordination Office
  • Near-Earth Objects (NEOs) are a transient population of small bodies with orbits near or in the terrestrial planet region. They represent a mid-stage in the dynamical cycle of asteroids and comets, which starts with their removal from the respective source regions—the main belt and trans-Neptunian scattered disk—and ends as bodies impact planets, disintegrate near the Sun, or are ejected from the solar system. Here we develop a new orbital model of NEOs by numerically integrating asteroid orbits from main-belt sources and calibrating the results on observations of the Catalina Sky Survey. The results imply a size-dependent sampling of the main belt with the ν 6 and 3:1 resonances producing ≃30% of NEOs with absolute magnitudes H = 15 and ≃80% of NEOs with H = 25. Hence, the large and small NEOs have different orbital distributions. The inferred flux of H < 18 bodies into the 3:1 resonance can be sustained only if the main-belt asteroids near the resonance drift toward the resonance at the maximal Yarkovsky rate (≃2 × 10−4 au Myr−1 for diameter D = 1 km and semimajor axis a = 2.5 au). This implies obliquities θ ≃ 0° for a < 2.5 au and θ ≃ 180° for a > 2.5 au, both in the immediate neighborhood of the resonance (the same applies to other resonances as well). We confirm the size-dependent disruption of asteroids near the Sun found in previous studies. An interested researcher can use the publicly available NEOMOD Simulator to generate user-defined samples of NEOs from our model.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Deienno, RogerioDepartment of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA (författare)
  • Bottke, William F.Department of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA (författare)
  • Jedicke, RobertInstitute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822-1839, USA (författare)
  • Naidu, ShantanuJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA (författare)
  • Chesley, Steven R.Department of Earth and Space Sciences, University of California, 595 Charles Young Drive East, 5656 Geology Building, Los Angeles, CA 90095, USA (författare)
  • Chodas, Paul W.Department of Earth and Space Sciences, University of California, 595 Charles Young Drive East, 5656 Geology Building, Los Angeles, CA 90095, USA (författare)
  • Granvik, MikaelLuleå tekniska universitet,Rymdteknik,Department of Physics, University of Helsinki, P.O. Box 64, FI-00014, Finland(Swepub:ltu)mikgra (författare)
  • Vokrouhlický, DavidInstitute of Astronomy, Charles University, V Holešovičkách 2, CZ18000 Prague 8, Czech Republic (författare)
  • Brož, MiroslavInstitute of Astronomy, Charles University, V Holešovičkách 2, CZ18000 Prague 8, Czech Republic (författare)
  • Morbidelli, AlessandroLaboratoire Lagrange, UMR7293, Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, Bouldervard de l’Observatoire, F-06304, Nice Cedex 4, France (författare)
  • Christensen, EricLunar and Planetary Laboratory, The University of Arizona, 1629 E. University Boulevard, Tucson, AZ 85721-0092, USA (författare)
  • Shelly, Frank C.Lunar and Planetary Laboratory, The University of Arizona, 1629 E. University Boulevard, Tucson, AZ 85721-0092, USA (författare)
  • Bolin, Bryce T.Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA; Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125, USA; NASA Postdoctoral Program Fellow, Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA (författare)
  • Department of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USAInstitute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822-1839, USA (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Astronomical Journal: Institute of Physics (IOP)166:20004-62561538-3881

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy