NEOMOD 3: The debiased size distribution of Near Earth Objects

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10492216" target="_blank" >RIV/00216208:11320/24:10492216 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=i_nurQG1-x" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=i_nurQG1-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.icarus.2024.116110" target="_blank" >10.1016/j.icarus.2024.116110</a>

Jazyk výsledku

angličtina

Název v původním jazyce

NEOMOD 3: The debiased size distribution of Near Earth Objects

Popis výsledku v původním jazyce

Our previous model (NEOMOD2) for the orbital and absolute magnitude distribution of Near Earth Objects (NEOs) was calibrated on the Catalina Sky Survey observations between 2013 and 2022. Here we extend NEOMOD2 to include visible albedo information from the Wide-Field Infrared Survey Explorer. The debiased albedo distribution of NEOs can be approximated by the sum of two Rayleigh distributions with the scale parameters p(V,dark )similar or equal to 0.03 and p(V,bright )similar or equal to 0.17. We find evidence for smaller NEOs having (on average) higher albedos than larger NEOs; this is likely a consequence of the size-dependent sampling of different main belt sources. These inferences and the absolute magnitude distribution from NEOMOD2 are used to construct the debiased size distribution of NEOs. We estimate 830 +/- 60 NEOs with diameters D &gt; 1 km and 20,000 +/- 2,000 NEOs with D &gt; 140 m. The new model, NEOMOD3, is available via the NEOMOD Simulator - an easy-to-operate code that can be used to generate user-defined samples (orbits, sizes and albedos) from the model.

Název v anglickém jazyce

NEOMOD 3: The debiased size distribution of Near Earth Objects

Popis výsledku anglicky

Our previous model (NEOMOD2) for the orbital and absolute magnitude distribution of Near Earth Objects (NEOs) was calibrated on the Catalina Sky Survey observations between 2013 and 2022. Here we extend NEOMOD2 to include visible albedo information from the Wide-Field Infrared Survey Explorer. The debiased albedo distribution of NEOs can be approximated by the sum of two Rayleigh distributions with the scale parameters p(V,dark )similar or equal to 0.03 and p(V,bright )similar or equal to 0.17. We find evidence for smaller NEOs having (on average) higher albedos than larger NEOs; this is likely a consequence of the size-dependent sampling of different main belt sources. These inferences and the absolute magnitude distribution from NEOMOD2 are used to construct the debiased size distribution of NEOs. We estimate 830 +/- 60 NEOs with diameters D &gt; 1 km and 20,000 +/- 2,000 NEOs with D &gt; 140 m. The new model, NEOMOD3, is available via the NEOMOD Simulator - an easy-to-operate code that can be used to generate user-defined samples (orbits, sizes and albedos) from the model.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA23-04946S" target="_blank" >GA23-04946S: Studium vývojových drah asteroidů řízených negravitačními silami pomocí fotometrických pozorování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Icarus

ISSN

0019-1035

e-ISSN

1090-2643

Svazek periodika

417

Číslo periodika v rámci svazku

červenec

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

116110

Kód UT WoS článku

001240850400001

EID výsledku v databázi Scopus

2-s2.0-85192170780