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Estimación de la masa del asteroide 253 mathilde a partir de datos de seguimiento durante el sobrevuelo de NEAR
1D. K. Yeomans, J. D. Giorgini, C. E. Helfrich, A. S. Konopliv, J. K. Miller, W. M. Owen Jr., D. J. Scheeres, S. P. Synnott, B. G. Williams, Navigation and Flight Mechanics Section, Jet Propulsion Laboratory (JPL), California Institute of Tech.
Science (New York, N.Y.)
|January 4, 1998
Resumen
La nave espacial Near Earth Asteroid Rendezvous (NEAR) se encuentra cerca de la Tierra.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Estudios de los asteroides Estudios de los asteroides.
- Navegación de naves espaciales Navegación de naves espaciales
Sus antecedentes:
- Las propiedades físicas del asteroide 253 Mathilde no habían sido cuantificadas previamente.
- La navegación precisa de las naves espaciales es crucial para la observación científica.
Objetivo del estudio:
- Determine la masa y la densidad del asteroide 253 Mathilde.
- Utilice los datos de sobrevuelo de naves espaciales para la caracterización de asteroides.
Principales métodos:
- Navegación precisa de la nave espacial NEAR durante un sobrevuelo cercano de Mathilde.
- Análisis de los datos de seguimiento de naves espaciales para medir las perturbaciones gravitacionales.
- Integración de datos de masa con estimaciones de volumen de imágenes.
Principales resultados:
- Se determinó que la masa de Mathilde fue de 1.033 (+/- 0.044) x 10(20) gramos.
- Se calculó que la densidad de masa de Mathilde era de 1,3 g/cm3.
- Demostró la utilidad de los sobrevuelos de naves espaciales para la determinación de la masa de los asteroides.
Conclusiones:
- El asteroide 253 Mathilde posee una baja densidad masiva.
- Los datos de seguimiento de naves espaciales proporcionan un método confiable para determinar la masa de los asteroides.
- Los datos de la misión NEAR avanzaron significativamente en la comprensión de Mathilde.
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