Asteroid Impact & Deflection Assessment mission: Kinetic impactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00461429" target="_blank" >RIV/67985815:_____/16:00461429 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.pss.2015.12.004" target="_blank" >http://dx.doi.org/10.1016/j.pss.2015.12.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pss.2015.12.004" target="_blank" >10.1016/j.pss.2015.12.004</a>

Result language

angličtina

Original language name

Asteroid Impact & Deflection Assessment mission: Kinetic impactor

Original language description

The Asteroid Impact & Deflection Assessment (AIDA) mission will be the first space experiment to demonstrate asteroid impact hazard mitigation by using a kinetic impactor to deflect an asteroid. The primary goals of AIDA are (i) to test our ability to perform a spacecraft impact on a potentially hazardous near-Earth asteroid and (ii) to measure and characterize the deflection caused by the impact. The AIDA target will be the binary near-Earth asteroid (65803) Didymos, with the deflection experiment to occur in late September, 2022. The DART impact on the secondary member of the binary at similar to 7 km/s is expected to alter the binary orbit period by about 4 minutes, assuming a simple transfer of momentum to the target, and this period change will be measured by Earth-based observatories. The AIM spacecraft will characterize the asteroid target and monitor results of the impact in situ at Didymos. The DART mission is a full-scale kinetic impact to deflect a 150 m diameter asteroid, with known impactor conditions and with target physical properties characterized by the AIM mission. Predictions for the momentum transfer efficiency of kinetic impacts are given for several possible target types of different porosities, using Housen and Holsapple (2011) crater scaling model for impact ejecta mass and velocity distributions. Results are compared to numerical simulation results using the Smoothed Particle Hydrodynamics code of Jutzi and Michel (2014) with good agreement. The model also predicts that the ejecta from the DART impact may make Didymos into an active asteroid, forming an ejecta coma that may be observable from Earth-based telescopes.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Planetary and Space Science

ISSN

0032-0633

e-ISSN

—

Volume of the periodical

121

Issue of the periodical within the volume

February

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

25-37

UT code for WoS article

000370459600004

EID of the result in the Scopus database

2-s2.0-84954271186