Association of individual meteors with their parent bodies

Rudawska, Regina; Vaubaillon, Jérémie; Atreya, Prakash

doi:10.1051/0004-6361/201118762

Cited by 13 publications

(7 citation statements)

References 13 publications

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“…Our analysis of the effects of the value of the cut-off parameter on our results confirms that, as pointed out in Rudawska et al (2012), 0.05 is physically justified and it is the right choice for this study.…”

Section: Changing the Value Of The Cut-off Parameter: Effects On Our supporting

confidence: 87%

Far from random: dynamical groupings among the NEO population

Marcos¹,

Marcos²

2015

Mon. Not. R. Astron. Soc.

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Among the near-Earth object (NEO) population there are comets and active asteroids which are sources of fragments that initially move together; in addition, some NEOs follow orbits temporarily trapped in a web of secular resonances. These facts contribute to increasing the risk of meteoroid strikes on Earth, making its proper quantification difficult. The identification and subsequent study of groups of small NEOs that appear to move in similar trajectories are necessary steps in improving our understanding of the impact risk associated with meteoroids. Here, we present results of a search for statistically significant dynamical groupings among the NEO population. Our Monte Carlo-based methodology recovers well-documented groupings like the Taurid Complex or the one resulting from the split comet 73P/SchwassmannWachmann 3, and new ones that may have been the source of past impacts. Among the most conspicuous are the Mjolnir and Ptah groups, perhaps the source of recent impact events like Almahata Sitta and Chelyabinsk, respectively. Meteoroid 2014 AA, that hit the Earth on 2014 January 2, could have its origin in a marginally significant grouping associated with Bennu. We find that most of the substructure present within the orbital domain of the NEOs is of resonant nature, probably induced by secular resonances and the Kozai mechanism that confine these objects into specific paths with well-defined perihelia.

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Section: Changing the Value Of The Cut-off Parameter: Effects On Our supporting

confidence: 87%

Far from random: dynamical groupings among the NEO population

Marcos¹,

Marcos²

2015

Mon. Not. R. Astron. Soc.

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“…In our paper we find that this object is more akin to the Northern Taurids by only one metric. We obtained negative results for the association of 1997US2 and 2001XX103 claimed by Rudawska et al (2012a). Micheli (2013) associated asteroid 2007RU17 to Taurid Complex and observed the object for detecting its coma.…”

Section: Results Of Other Similar Studiesmentioning

confidence: 77%

“…In a second step a computation backward in time for 5000 years allows nine associated NEOs to remain. Rudawska et al (2012a) tests D-criterion metrics, D SH and D H , using the model of generation and evolution of meteoroid stream in the solar system from Vaubaillon et al (2005). They determined a threshold of 0.084 for D SH and 0.077 for D H , when a meteor is associated to the meteoroid stream.…”

Section: Choosing a Threshold Valuementioning

confidence: 99%

Association between meteor showers and asteroids using multivariate criteria

Dumitru¹,

Birlan²,

Popescu³

et al. 2017

A&A

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Context. Meteoroid streams are fragments of matter produced by comets or asteroids which intersects the orbit of Earth. Meteor showers are produced when Earth intersects these streams of matter. The discoveries of active asteroids and extinct comets open a new view of the relation between these objects as possible parent bodies at the origin of meteor showers. Aims. The aim of this work is to identify the asteroids that can produce or re-populate meteoroid streams by determining the similarity of their orbits and orbital evolution over 10 000 yr. Methods. The identification was carried out by evaluating several well known D-criteria metrics, the orbits being taken from the IAU Meteor Data Center database and from IAU Minor Planet Center. Finally, we analyzed the physical properties and the orbital stability (in the Lyapunov time sense) of the candidates as well as their possible relationship with meteorites. Results. 206 near-Earth asteroids (NEAs) were associated as possible parent bodies with 28 meteor showers, according to at least two of the criterion used. 50 of them satisfied all the criteria. Notable finds are: binary asteroid 2000UG11 associated with Andromedids (AND), while the tumbling asteroid (4179)Toutatis could be associated with October Capricornids (OCC). Other possible good candidates are 2004TG10, 2008EY5, 2010CF55, 2010TU149 and 2014OY1. These objects have low albedo, therefore can be primitive objects. Asteroid 2007LW19 which is a fast rotator and most probably has monolithic structure and so its physical characteristic does not support the association found based on the dynamical criteria.

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“…A lower threshold value of D sh < 0.05 was used by Rudawska & Jenniskens (2014); Kornoš et al (2014);. Rudawska et al (2012Rudawska et al ( , 2015b have revised such methods but there is still room for improvements, since even the date of ejection of simulated meteoroid stream cannot be found by backward integrations. The main difficulty remains in the comparison of semi-major axis and eccentricity, which are poorly determined (Egal et al 2017;Vida et al 2018).…”

Section: Searching For An Appropriate Methodsmentioning

confidence: 99%

A robust method to identify meteor showers new parent bodies from the SonotaCo and EDMOND meteoroid orbit databases

Guennoun

Vaubaillon

Čapek

et al. 2019

A&A

Self Cite

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Context. Several new meteor showers are added to the International Astronomical Union (IAU) list of meteor showers every year. Given the multiplication of video meteor measurements new parent bodies are to be found in addition to new showers. Such an endeavor is usually performed by comparing orbital elements, using a high threshold single-linking D sh -criterion. However, questions remain about the accuracy of the method and the veracity of the newly associated parent bodies. Aims. Our goal is to find the presence of new parent bodies in a statistical meaningful way. Methods. A search for parent bodies was performed among SonotaCo and EDMOND databases. The association of asteroids with meteors was based on different methods, discussed and compared below. In addition, a thorough statistical test was performed in order to investigate the possible random associations. Results. A list of potential new parent bodies associated with at least 50 meteors is found. A statistical test was used to show whether the group of meteor orbits and the asteroid is a random coincidence or not. Out of 54 potential new parent bodies, only three new parent bodies are not excluded by the statistical test: 2014 BN 14 , 2015 T X 24 and 2015 QT 3 , with a probability of chance occurrence of 37, 10 and 13%, respectively. This shows the need for rigorous method when searching for the existence of meteor showers and parent bodies. Conclusions. Ideally, such a test (or even better, tests) should be conducted in order to confirm (or not) the current IAU list of meteor showers. Similarly, all meteor orbit data in our databases should ideally be revisited using the latest methods providing a better estimate of the real uncertainty and accuracy of the derived orbits.Article published by EDP Sciences A84, page 1 of 9 A&A 622, A84 (2019)

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Association of individual meteors with their parent bodies

Cited by 13 publications

References 13 publications

Far from random: dynamical groupings among the NEO population

Far from random: dynamical groupings among the NEO population

Association between meteor showers and asteroids using multivariate criteria

A robust method to identify meteor showers new parent bodies from the SonotaCo and EDMOND meteoroid orbit databases

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