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Un asteroide co-orbital retrógrado de Júpiter

Paul Wiegert^1,2, Martin Connors^1,2,3,4,5, Christian Veillet⁶

¹Department of Physics and Astronomy, The University of Western Ontario, London, Ontario N6A 3K7, Canada.

|March 31, 2017

Resumen

El asteroide co-orbital retrógrado 2015 BZ509 orbita de manera estable con Júpiter. Este descubrimiento sugiere que tales cuerpos celestes únicos, que se mueven contra las órbitas planetarias, pueden ser más comunes de lo que se pensaba anteriormente.

Área de la Ciencia:

Mecánica celestial
Ciencias planetarias
Dinámica de los asteroides

Sus antecedentes:

El trabajo teórico sugiere que los asteroides co-orbitales retrógrados estables son posibles.
Los datos orbitales iniciales del asteroide 2015 BZ509 eran demasiado inciertos para confirmar su estado co-orbital.

Objetivo del estudio:

Para determinar si el asteroide 2015 BZ509 es un asteroide co-orbital retrógrado de Júpiter.
Para analizar la estabilidad y el origen de la órbita del asteroide 2015 BZ509.

Principales métodos:

Observaciones orbitales del asteroide 2015 BZ509.
Análisis dinámico de su estabilidad a largo plazo y resonancia orbital.
Comparación con los modelos teóricos de captura y evolución de asteroides.

Principales resultados:

El asteroide 2015 BZ509 está confirmado como un asteroide co-orbital retrógrado de Júpiter.
Ha mantenido su estado de resonancia durante aproximadamente un millón de años.
Su origen puede implicar una interacción pasada con Saturno, posiblemente como un cometa de la familia Halley.

Conclusiones:

Los asteroides co-orbitales retrógrados pueden lograr estabilidad a largo plazo.
El asteroide 2015 BZ509 proporciona evidencia observacional para estas predicciones teóricas.
Tales asteroides podrían ser más frecuentes en los sistemas planetarios de lo que se reconoce actualmente.

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