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1. Identity statement Reference Type Journal Article Site mtc-m21c.sid.inpe.br Holder Code isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S Identifier 8JMKD3MGP3W34R/3RJMFQ8 Repository sid.inpe.br/mtc-m21c/2018/08.06.15.01 Metadata Repository sid.inpe.br/mtc-m21c/2018/08.06.15.01.01 Metadata Last Update 2021:02.11.18.10.42 (UTC) administrator ISSN 0065-3438. Citation Key VendittiRocc:2018:MoAsAs Title Modeling asteroids to assist in orbiting and landing missions Year 2018 Access Date 2024, May 16 Type of Work conference paper Secondary Type PRE PI 2. Context Author 1 Venditti, F. C. F. 2 Rocco, Evandro Marconi Resume Identifier 1 2 8JMKD3MGP5W/3C9JH37 Group 1 2 DIDMC-CGETE-INPE-MCTIC-GOV-BR Affiliation 1 Planetary Radar, Arecibo Observatory 2 Instituto Nacional de Pesquisas Espaciais (INPE) Author e-Mail Address 1 2 evandro.rocco@inpe.br Journal Advances in the Astronautical Sciences Volume 162 Pages 2041-2060 History (UTC) 2018-08-06 15:01:16 :: simone -> administrator :: 2018 2021-02-11 18:10:42 :: administrator -> simone :: 2018 3. Content and structure Is the master or a copy? is the master Content Stage completed Transferable 1 Content Type External Contribution Abstract Asteroids are rotating bodies with asymmetric distribution of mass, which makes the gravitational field around them different from spherical bodies. In order to more accurately study the gravitational field around these objects, it is necessary to have a physical model. To simplify the model of an asteroid, it is common to use approximations to simple shapes such as ellipsoids. However, this may lead to an imprecise model, especially when the asteroid has a very asymmetric shape. Thus, a new methodology developed to model the gravitational field of the asteroids is presented, called Mascon-layer model. It consists in using a polyhedron shape model, which is built using observational data, thus giving a good approximation of the real shape of the object. This shape model is then transformed into layers of mass concentrations. The gravitational potential is obtained using the new model, and then applied to analyze very close orbits on the collision boundary, and very distant orbits on the verge of escaping the sphere of influence of the asteroid's gravitational field. Orbital maneuvers, using continuous low thrust in closed loop, were also performed. One of the advantages of the methodology developed is that it is possible to use a simpler approach, requiring less computational effort, but still using a reliable source for the shape model. Area ETES Arrangement urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMC > Modeling asteroids to... doc Directory Content there are no files source Directory Content there are no files agreement Directory Content agreement.html 06/08/2018 12:01 1.0 KiB  4. Conditions of access and use Language en User Group simone Reader Group administrator simone Visibility shown Read Permission deny from all and allow from 150.163 Update Permission not transferred 5. Allied materials Next Higher Units 8JMKD3MGPCW/446AF4B Dissemination WEBSCI; PORTALCAPES; MGA; COMPENDEX. Host Collection urlib.net/www/2017/11.22.19.04 6. Notes Notes AAS/AIAA Astrodynamics Specialist Conference, 2017; Stevenson; United States; 20 August 2017 through 24 August 2017 Empty Fields alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel doi e-mailaddress format isbn keywords label lineage mark mirrorrepository month nextedition number numberoffiles orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle size sponsor subject targetfile tertiarymark tertiarytype url versiontype 7. Description control e-Mail (login) simone update

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