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Un cuerpo semejante a Sedna con un perihelio de 80 unidades astronómicas
Chadwick A Trujillo1, Scott S Sheppard2
11] Gemini Observatory, 670 North A'ohoku Place, Hilo, Hawaii 96720, USA [2].
Nature
|March 28, 2014
Resumen
Los astrónomos descubrieron un segundo objeto similar a Sedna, 2012 VP113, con un perihelio de 80 UA. Este hallazgo sugiere que estos objetos pueden pertenecer a la nube de Oort interior, potencialmente superando en número a otras poblaciones del Sistema Solar.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Ciencias planetarias Ciencias planetarias.
- Dinámica del sistema solar Dinámica del sistema solar
Sus antecedentes:
- El Sistema Solar comprende planetas rocosos, gigantes gaseosos y objetos helados del cinturón de Kuiper.
- El planeta enano Sedna, con un perihelio de 76 UA, fue previamente único.
- La órbita de Sedna sugería un vínculo con la hipotética nube externa de Oort.
Objetivo del estudio:
- Para informar sobre el descubrimiento de un segundo objeto similar a Sedna.
- Para investigar las implicaciones de este descubrimiento para los modelos de formación del Sistema Solar.
- Para explorar la posible existencia y composición de la nube de Oort interior.
Principales métodos:
- Detección y análisis orbital del objeto 2012 VP113.3.
- Comparación de los parámetros orbitales de 2012 VP113 con Sedna y otros cuerpos del Sistema Solar.
- Modelado de la formación para evaluar los orígenes y distribución de los objetos similares a Sedna.
Principales resultados:
- Un segundo objeto similar a Sedna, 2012 VP113, fue identificado con un perihelio de 80 UA.
- Sedna y 2012 VP113 no están aislados, lo que indica una población de objetos similares.
- Estos objetos probablemente representan miembros de la nube de Oort interior.
Conclusiones:
- El descubrimiento de 2012 VP113 apoya la existencia de una nube de Oort interior.
- Los objetos de la nube de Oort Interior pueden ser la población dinámicamente estable más numerosa en el Sistema Solar.
- Se necesita más investigación para caracterizar completamente esta región recién identificada del Sistema Solar.
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