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Un asteroide tipo M de baja densidad en el cinturón principal
1Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA. margot@gps.caltech.edu
Science (New York, N.Y.)
|June 21, 2003
Resumen
La densidad en masa del asteroide 22 Kalliope es baja, lo que sugiere que no es metálico. Su satélite puede haber sido eyectado por el impacto, lo que indica diferentes estructuras internas.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Investigación de asteroides Investigación de asteroides.
- Astrogeología y Astrogeología.
Sus antecedentes:
- Se teoriza que los asteroides tipo M son núcleos metálicos de cuerpos diferenciados.
- Comprender la composición de los asteroides es clave para los modelos de formación del sistema solar.
Objetivo del estudio:
- Para determinar la densidad masiva y la composición del asteroide 22 Kalliope del cinturón principal.
- Para investigar el origen y la relación de su satélite.
Principales métodos:
- Análisis de los parámetros orbitales de un satélite alrededor del 22 Kalliope.
- Cálculo de la densidad de masa basada en datos orbitales.
Principales resultados:
- La densidad a granel de 22 Kalliope fue calculada como 2.37 +/- 0.4 g/cm3.
- Esta baja densidad sugiere una composición no metálica, posiblemente cóndrica con un 30% de porosidad.
- La órbita circular del satélite implica diferentes estructuras internas y tasas de disipación de las mareas entre Kalliope y su satélite.
Conclusiones:
- 22 Es poco probable que Kalliope sea un núcleo metálico debido a su baja densidad.
- El asteroide puede estar compuesto de material condrítico con porosidad significativa.
- El satélite podría ser el resultado de una eyección de impacto, con propiedades internas distintas de Kalliope.
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