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Updated: Jul 12, 2026

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Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Observaciones con el telescopio espacial Hubble del cometa p/shoemaker-levy 9 (1993e)
Resumen
Las observaciones del Hubble revelaron que el cometa P/Shoemaker-Levy 9 tenía 11 núcleos, cada uno de hasta 4,3 km de ancho. Estos fragmentos podrían entregar 10 ^ 8 megatones de energía de TNT a Júpiter, con una mínima producción de agua detectada.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Ciencias planetarias Ciencias planetarias.
- Ciencia de los Cometas Ciencia de los Cometas
Sus antecedentes:
- El cometa P/Shoemaker-Levy 9 se fragmentó antes de su aproximación a Júpiter en 1993.
- Comprender las propiedades de los núcleos cometarios es crucial para las estimaciones de la energía de impacto.
Objetivo del estudio:
- Para caracterizar las propiedades físicas de los núcleos fragmentados del cometa P/Shoemaker-Levy 9.
- Para estimar la deposición de energía potencial del impacto del cometa en Júpiter.
Principales métodos:
- Observaciones del Telescopio Espacial Hubble utilizando la cámara planetaria y el espectrógrafo de objetos débiles.
- Análisis fotométrico de magnitudes nucleares y análisis espectral para la emisión de OH.
Principales resultados:
- Se observaron aproximadamente 20 núcleos, con 11 núcleos más brillantes con magnitudes entre 23.7 y 24.8.
- Los diámetros nucleares estimados oscilaron entre 2,5 y 4,3 km, asumiendo un albedo geométrico de 0,04.
- La energía de impacto potencial calculada fue de ~4 x 10^30 ergs (~10^8 megatones de TNT).
- Se determinó que el límite superior para la velocidad de producción de agua era de ~2 x 10^27 moléculas por segundo debido a la no detección de la emisión de OH.
Conclusiones:
- El cometa fragmentado P/Shoemaker-Levy 9 poseía núcleos sustanciales capaces de liberar energía significativa al impacto.
- La falta de emisión de OH detectada sugiere una baja actividad cometaria y una producción mínima de agua de los núcleos.
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