Assessment of flyby methods as applied to close encounters among asteroids

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dc.contributor.authorStronati, Nicolò
dc.contributor.authorFenucci, Marco
dc.contributor.authorMicheli, Marco
dc.contributor.authorCeccaroni, Marta
dc.date.accessioned2024-08-29T14:10:18Z
dc.date.available2024-08-29T14:10:18Z
dc.date.freetoread2024-08-29
dc.date.issued2024-08-09
dc.date.pubOnline2024-08-09
dc.description.abstractOrbital flybys have been extensively studied for spacecraft missions, resulting in effective mathematical and physical models. However, these models’ applicability to natural encounters involving asteroids has not been explored. This paper examines the applicability of two such theories, patched conics (PC) and the Keplerian map (KM), to asteroid encounters. A review of the two methods will be provided, highlighting their assumptions and range of applicability. Simulations of asteroid–asteroid encounters will then be performed to evaluate their effectiveness in these scenarios. The simulation parameters are set by collecting data on actual asteroid–asteroid encounters, hereby presented, generally characterised by high close approach distances and small masses of the perturbing bodies, if compared to those used to build the flyby theories. Results show that the PC theory’s effectiveness diminishes with increasing approach distances, aligning with its assumptions. Moreover, the prediction of the model is better in the geometric configurations where the flyby has major effects on the orbital energy change. The KM theory has shown good effectiveness for encounters occurring outside the sphere of influence of the perturbing body, even for very high distances. This research investigates flyby models’ strengths and weaknesses in asteroid encounters, offering practical insights and future directions.
dc.description.journalNameAerospace
dc.description.sponsorshipEuropean Space Agency (ESA) Open Space Innovation Platform (OSIP) campaign and by Cranfield University (ESA Contract no. 4000134762/21/NL/MH/hm-Asteroid Collisions).
dc.identifier.citationStronati N, Fenucci M, Micheli M, Ceccaroni M. (2024) Assessment of flyby methods as applied to close encounters among asteroids. Aerospace, Volume 11, Issue 8, August 2024, Article number 647
dc.identifier.eissn2226-4310
dc.identifier.elementsID551790
dc.identifier.issn2226-4310
dc.identifier.issueNo8
dc.identifier.paperNo647
dc.identifier.urihttps://doi.org/10.3390/aerospace11080647
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22841
dc.identifier.volumeNo11
dc.languageEnglish
dc.language.isoen
dc.publisherMDPI
dc.publisher.urihttps://www.mdpi.com/2226-4310/11/8/647
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject40 Engineering
dc.subject4001 Aerospace Engineering
dc.subject4001 Aerospace engineering
dc.subjectasteroids
dc.subjectreview
dc.subjectorbital mechanics
dc.subjectflyby
dc.subjectpatched-conics
dc.subjectcircular restricted three-body problem
dc.subjectstatistics
dc.titleAssessment of flyby methods as applied to close encounters among asteroids
dc.typeArticle
dcterms.dateAccepted2024-08-06

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