Interior structure and seasonal mass redistribution of Mars from radio tracking of Mars Pathfinder.
Science
; 278(5344): 1749-52, 1997 Dec 05.
Article
em En
| MEDLINE
| ID: mdl-9388168
ABSTRACT
Doppler and range measurements to the Mars Pathfinder lander made using its radio communications system have been combined with similar measurements from the Viking landers to estimate improved values of the precession of Mars' pole of rotation and the variation in Mars' rotation rate. The observed precession of -7576 +/- 35 milliarc seconds of angle per year implies a dense core and constrains possible models of interior composition. The estimated annual variation in rotation is in good agreement with a model of seasonal mass exchange of carbon dioxide between the atmosphere and ice caps.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Marte
/
Meio Ambiente Extraterreno
Idioma:
En
Revista:
Science
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Estados Unidos