Charon's size and an upper limit on its atmosphere from a stellar occultation
- Autores
- Sicardy, B.; Bellucci, A.; Gendron, E.; Lacombe, F.; Lacour, S.; Lecacheux, J.; Lellouch, E.; Renner, S.; Pau, S.; Roques, F.; Widemann, T.; Colas, F.; Vachier, F.; Martins, R. Vieira; Ageorges, N.; Hainaut, O.; Marco, O.; Beisker, W.; Hummel, E.; Feinstein Baigorri, Carlos; Levato, Orlando Hugo; Maury, A.; Frappa, E.; Gaillard, B.; Lavayssière, M.; Di Sora, M.; Mallia, F.; Masi, G.; Behrend, R.; Carrier, F.; Mousis, O.; Rousselot, P.; Alvarez Candal, Alvaro Augusto; Lazzaro, D.; Veiga, C.; Andrei, A.H.; Assafin, M.; Da Silva Neto, D.N.; Jacques, C.; Pimentel, E.; Weaver, D.; Lecampion, J.-F.; Doncel, F.; Momiyama, T.; Tancredi, G.
- Año de publicación
- 2006
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass. The precise radii of Pluto and Charon have remained uncertain, leading to large uncertainties on their densities2. Although stellar occultations by Charon are in principle a powerful way of measuring its size, they are rare, as the satellite subtends less than 0.3 microradians (0.06 arcsec) on the sky. One occultation (in 1980) yielded a lower limit of 600 km for the satellite's radius 3, which was later refined to 601.5 km (ref. 4). Here we report observations from a multi-station stellar occultation by Charon, which we use to derive a radius, RC = 603.6 ± 1.4 km (1σ), and a density of ρ = 1.71 ± 0.08 g cm-3. This occultation also provides upper limits of 110 and 15 (3σ) nanobar for an atmosphere around Charon, assuming respectively a pure nitrogen or pure methane atmosphere. © 2006 Nature Publishing Group.
Fil: Sicardy, B.. Universite Pierre et Marie Curie; Francia. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Bellucci, A.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Gendron, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lacombe, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lacour, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lecacheux, J.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lellouch, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Renner, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Pau, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Roques, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Widemann, T.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Colas, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;
Fil: Vachier, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;
Fil: Martins, R. Vieira. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides; . Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Ageorges, N.. European Southern Observatory Santiago; Chile
Fil: Hainaut, O.. European Southern Observatory Santiago; Chile
Fil: Marco, O.. European Southern Observatory Santiago; Chile
Fil: Beisker, W.. International Occultation Timing Association;
Fil: Hummel, E.. International Occultation Timing Association;
Fil: Feinstein Baigorri, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
Fil: Maury, A.. Gene Shoemaker Observatory; Chile
Fil: Frappa, E.. Planétarium de Saint-etienne;
Fil: Gaillard, B.. Association Des Utilisateurs de Détecteurs Electroniques (aude);
Fil: Lavayssière, M.. Association Des Utilisateurs de Détecteurs Electroniques (aude);
Fil: Di Sora, M.. Campo Catino Austral Observatory; Chile
Fil: Mallia, F.. Campo Catino Austral Observatory; Chile
Fil: Masi, G.. Campo Catino Austral Observatory; Chile. Universita Tor Vergata; Italia
Fil: Behrend, R.. Universidad de Ginebra; Suiza
Fil: Carrier, F.. Universidad de Ginebra; Suiza
Fil: Mousis, O.. Observatoire de Besancon;
Fil: Rousselot, P.. Observatoire de Besancon;
Fil: Alvarez Candal, Alvaro Augusto. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Lazzaro, D.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Veiga, C.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Andrei, A.H.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; Brasil
Fil: Assafin, M.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Da Silva Neto, D.N.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Jacques, C.. Observatório CEAMIG-REA; Brasil
Fil: Pimentel, E.. Observatório CEAMIG-REA; Brasil
Fil: Weaver, D.. Universidade de Fortaleza;
Fil: Lecampion, J.-F.. Observatoire Aquitain Des Sciences de L'univers;
Fil: Doncel, F.. Universidad Nacional de Asunción; Paraguay
Fil: Momiyama, T.. Universidad Nacional de Asunción; Paraguay
Fil: Tancredi, G.. Facultad de Ciencias; Uruguay - Materia
-
Charon
Pluto
Satellites - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/39754
Ver los metadatos del registro completo
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Charon's size and an upper limit on its atmosphere from a stellar occultationSicardy, B.Bellucci, A.Gendron, E.Lacombe, F.Lacour, S.Lecacheux, J.Lellouch, E.Renner, S.Pau, S.Roques, F.Widemann, T.Colas, F.Vachier, F.Martins, R. VieiraAgeorges, N.Hainaut, O.Marco, O.Beisker, W.Hummel, E.Feinstein Baigorri, CarlosLevato, Orlando HugoMaury, A.Frappa, E.Gaillard, B.Lavayssière, M.Di Sora, M.Mallia, F.Masi, G.Behrend, R.Carrier, F.Mousis, O.Rousselot, P.Alvarez Candal, Alvaro AugustoLazzaro, D.Veiga, C.Andrei, A.H.Assafin, M.Da Silva Neto, D.N.Jacques, C.Pimentel, E.Weaver, D.Lecampion, J.-F.Doncel, F.Momiyama, T.Tancredi, G.CharonPlutoSatelliteshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass. The precise radii of Pluto and Charon have remained uncertain, leading to large uncertainties on their densities2. Although stellar occultations by Charon are in principle a powerful way of measuring its size, they are rare, as the satellite subtends less than 0.3 microradians (0.06 arcsec) on the sky. One occultation (in 1980) yielded a lower limit of 600 km for the satellite's radius 3, which was later refined to 601.5 km (ref. 4). Here we report observations from a multi-station stellar occultation by Charon, which we use to derive a radius, RC = 603.6 ± 1.4 km (1σ), and a density of ρ = 1.71 ± 0.08 g cm-3. This occultation also provides upper limits of 110 and 15 (3σ) nanobar for an atmosphere around Charon, assuming respectively a pure nitrogen or pure methane atmosphere. © 2006 Nature Publishing Group.Fil: Sicardy, B.. Universite Pierre et Marie Curie; Francia. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Bellucci, A.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Gendron, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Lacombe, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Lacour, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Lecacheux, J.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Lellouch, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Renner, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Pau, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Roques, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Widemann, T.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Colas, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;Fil: Vachier, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;Fil: Martins, R. Vieira. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides; . Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Ageorges, N.. European Southern Observatory Santiago; ChileFil: Hainaut, O.. European Southern Observatory Santiago; ChileFil: Marco, O.. European Southern Observatory Santiago; ChileFil: Beisker, W.. International Occultation Timing Association;Fil: Hummel, E.. International Occultation Timing Association;Fil: Feinstein Baigorri, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; ArgentinaFil: Maury, A.. Gene Shoemaker Observatory; ChileFil: Frappa, E.. Planétarium de Saint-etienne;Fil: Gaillard, B.. Association Des Utilisateurs de Détecteurs Electroniques (aude);Fil: Lavayssière, M.. Association Des Utilisateurs de Détecteurs Electroniques (aude);Fil: Di Sora, M.. Campo Catino Austral Observatory; ChileFil: Mallia, F.. Campo Catino Austral Observatory; ChileFil: Masi, G.. Campo Catino Austral Observatory; Chile. Universita Tor Vergata; ItaliaFil: Behrend, R.. Universidad de Ginebra; SuizaFil: Carrier, F.. Universidad de Ginebra; SuizaFil: Mousis, O.. Observatoire de Besancon;Fil: Rousselot, P.. Observatoire de Besancon;Fil: Alvarez Candal, Alvaro Augusto. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Lazzaro, D.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Veiga, C.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Andrei, A.H.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; BrasilFil: Assafin, M.. Universidade Federal do Rio de Janeiro; BrasilFil: Da Silva Neto, D.N.. Universidade Federal do Rio de Janeiro; BrasilFil: Jacques, C.. Observatório CEAMIG-REA; BrasilFil: Pimentel, E.. Observatório CEAMIG-REA; BrasilFil: Weaver, D.. Universidade de Fortaleza;Fil: Lecampion, J.-F.. Observatoire Aquitain Des Sciences de L'univers;Fil: Doncel, F.. Universidad Nacional de Asunción; ParaguayFil: Momiyama, T.. Universidad Nacional de Asunción; ParaguayFil: Tancredi, G.. Facultad de Ciencias; UruguayNature Publishing Group2006-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/39754Sicardy, B.; Bellucci, A.; Gendron, E.; Lacombe, F.; Lacour, S.; et al.; Charon's size and an upper limit on its atmosphere from a stellar occultation; Nature Publishing Group; Nature; 439; 7072; 1-2006; 52-540028-0836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1038/nature04351info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/nature04351info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2006Natur.439...52Sinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:48:22Zoai:ri.conicet.gov.ar:11336/39754instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:48:22.767CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Charon's size and an upper limit on its atmosphere from a stellar occultation |
| title |
Charon's size and an upper limit on its atmosphere from a stellar occultation |
| spellingShingle |
Charon's size and an upper limit on its atmosphere from a stellar occultation Sicardy, B. Charon Pluto Satellites |
| title_short |
Charon's size and an upper limit on its atmosphere from a stellar occultation |
| title_full |
Charon's size and an upper limit on its atmosphere from a stellar occultation |
| title_fullStr |
Charon's size and an upper limit on its atmosphere from a stellar occultation |
| title_full_unstemmed |
Charon's size and an upper limit on its atmosphere from a stellar occultation |
| title_sort |
Charon's size and an upper limit on its atmosphere from a stellar occultation |
| dc.creator.none.fl_str_mv |
Sicardy, B. Bellucci, A. Gendron, E. Lacombe, F. Lacour, S. Lecacheux, J. Lellouch, E. Renner, S. Pau, S. Roques, F. Widemann, T. Colas, F. Vachier, F. Martins, R. Vieira Ageorges, N. Hainaut, O. Marco, O. Beisker, W. Hummel, E. Feinstein Baigorri, Carlos Levato, Orlando Hugo Maury, A. Frappa, E. Gaillard, B. Lavayssière, M. Di Sora, M. Mallia, F. Masi, G. Behrend, R. Carrier, F. Mousis, O. Rousselot, P. Alvarez Candal, Alvaro Augusto Lazzaro, D. Veiga, C. Andrei, A.H. Assafin, M. Da Silva Neto, D.N. Jacques, C. Pimentel, E. Weaver, D. Lecampion, J.-F. Doncel, F. Momiyama, T. Tancredi, G. |
| author |
Sicardy, B. |
| author_facet |
Sicardy, B. Bellucci, A. Gendron, E. Lacombe, F. Lacour, S. Lecacheux, J. Lellouch, E. Renner, S. Pau, S. Roques, F. Widemann, T. Colas, F. Vachier, F. Martins, R. Vieira Ageorges, N. Hainaut, O. Marco, O. Beisker, W. Hummel, E. Feinstein Baigorri, Carlos Levato, Orlando Hugo Maury, A. Frappa, E. Gaillard, B. Lavayssière, M. Di Sora, M. Mallia, F. Masi, G. Behrend, R. Carrier, F. Mousis, O. Rousselot, P. Alvarez Candal, Alvaro Augusto Lazzaro, D. Veiga, C. Andrei, A.H. Assafin, M. Da Silva Neto, D.N. Jacques, C. Pimentel, E. Weaver, D. Lecampion, J.-F. Doncel, F. Momiyama, T. Tancredi, G. |
| author_role |
author |
| author2 |
Bellucci, A. Gendron, E. Lacombe, F. Lacour, S. Lecacheux, J. Lellouch, E. Renner, S. Pau, S. Roques, F. Widemann, T. Colas, F. Vachier, F. Martins, R. Vieira Ageorges, N. Hainaut, O. Marco, O. Beisker, W. Hummel, E. Feinstein Baigorri, Carlos Levato, Orlando Hugo Maury, A. Frappa, E. Gaillard, B. Lavayssière, M. Di Sora, M. Mallia, F. Masi, G. Behrend, R. Carrier, F. Mousis, O. Rousselot, P. Alvarez Candal, Alvaro Augusto Lazzaro, D. Veiga, C. Andrei, A.H. Assafin, M. Da Silva Neto, D.N. Jacques, C. Pimentel, E. Weaver, D. Lecampion, J.-F. Doncel, F. Momiyama, T. Tancredi, G. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Charon Pluto Satellites |
| topic |
Charon Pluto Satellites |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass. The precise radii of Pluto and Charon have remained uncertain, leading to large uncertainties on their densities2. Although stellar occultations by Charon are in principle a powerful way of measuring its size, they are rare, as the satellite subtends less than 0.3 microradians (0.06 arcsec) on the sky. One occultation (in 1980) yielded a lower limit of 600 km for the satellite's radius 3, which was later refined to 601.5 km (ref. 4). Here we report observations from a multi-station stellar occultation by Charon, which we use to derive a radius, RC = 603.6 ± 1.4 km (1σ), and a density of ρ = 1.71 ± 0.08 g cm-3. This occultation also provides upper limits of 110 and 15 (3σ) nanobar for an atmosphere around Charon, assuming respectively a pure nitrogen or pure methane atmosphere. © 2006 Nature Publishing Group. Fil: Sicardy, B.. Universite Pierre et Marie Curie; Francia. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Bellucci, A.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Gendron, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Lacombe, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Lacour, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Lecacheux, J.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Lellouch, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Renner, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Pau, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Roques, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Widemann, T.. Gepi - Galaxies, Etoiles, Physique, Instrumentation; Fil: Colas, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides; Fil: Vachier, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides; Fil: Martins, R. Vieira. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides; . Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Ageorges, N.. European Southern Observatory Santiago; Chile Fil: Hainaut, O.. European Southern Observatory Santiago; Chile Fil: Marco, O.. European Southern Observatory Santiago; Chile Fil: Beisker, W.. International Occultation Timing Association; Fil: Hummel, E.. International Occultation Timing Association; Fil: Feinstein Baigorri, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina Fil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina Fil: Maury, A.. Gene Shoemaker Observatory; Chile Fil: Frappa, E.. Planétarium de Saint-etienne; Fil: Gaillard, B.. Association Des Utilisateurs de Détecteurs Electroniques (aude); Fil: Lavayssière, M.. Association Des Utilisateurs de Détecteurs Electroniques (aude); Fil: Di Sora, M.. Campo Catino Austral Observatory; Chile Fil: Mallia, F.. Campo Catino Austral Observatory; Chile Fil: Masi, G.. Campo Catino Austral Observatory; Chile. Universita Tor Vergata; Italia Fil: Behrend, R.. Universidad de Ginebra; Suiza Fil: Carrier, F.. Universidad de Ginebra; Suiza Fil: Mousis, O.. Observatoire de Besancon; Fil: Rousselot, P.. Observatoire de Besancon; Fil: Alvarez Candal, Alvaro Augusto. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Lazzaro, D.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Veiga, C.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Andrei, A.H.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; Brasil Fil: Assafin, M.. Universidade Federal do Rio de Janeiro; Brasil Fil: Da Silva Neto, D.N.. Universidade Federal do Rio de Janeiro; Brasil Fil: Jacques, C.. Observatório CEAMIG-REA; Brasil Fil: Pimentel, E.. Observatório CEAMIG-REA; Brasil Fil: Weaver, D.. Universidade de Fortaleza; Fil: Lecampion, J.-F.. Observatoire Aquitain Des Sciences de L'univers; Fil: Doncel, F.. Universidad Nacional de Asunción; Paraguay Fil: Momiyama, T.. Universidad Nacional de Asunción; Paraguay Fil: Tancredi, G.. Facultad de Ciencias; Uruguay |
| description |
Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass. The precise radii of Pluto and Charon have remained uncertain, leading to large uncertainties on their densities2. Although stellar occultations by Charon are in principle a powerful way of measuring its size, they are rare, as the satellite subtends less than 0.3 microradians (0.06 arcsec) on the sky. One occultation (in 1980) yielded a lower limit of 600 km for the satellite's radius 3, which was later refined to 601.5 km (ref. 4). Here we report observations from a multi-station stellar occultation by Charon, which we use to derive a radius, RC = 603.6 ± 1.4 km (1σ), and a density of ρ = 1.71 ± 0.08 g cm-3. This occultation also provides upper limits of 110 and 15 (3σ) nanobar for an atmosphere around Charon, assuming respectively a pure nitrogen or pure methane atmosphere. © 2006 Nature Publishing Group. |
| publishDate |
2006 |
| dc.date.none.fl_str_mv |
2006-01 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/39754 Sicardy, B.; Bellucci, A.; Gendron, E.; Lacombe, F.; Lacour, S.; et al.; Charon's size and an upper limit on its atmosphere from a stellar occultation; Nature Publishing Group; Nature; 439; 7072; 1-2006; 52-54 0028-0836 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/39754 |
| identifier_str_mv |
Sicardy, B.; Bellucci, A.; Gendron, E.; Lacombe, F.; Lacour, S.; et al.; Charon's size and an upper limit on its atmosphere from a stellar occultation; Nature Publishing Group; Nature; 439; 7072; 1-2006; 52-54 0028-0836 CONICET Digital CONICET |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1038/nature04351 info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/nature04351 info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2006Natur.439...52S |
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Nature Publishing Group |
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Nature Publishing Group |
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