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Ocultación por un posible tercer satélite de Neptuno

H J Reitsema, W B Hubbard, L A Lebofsky

Science (New York, N.Y.)

|January 15, 1982

Resumen

Los astrónomos detectaron un potencial tercer satélite de Neptuno durante una ocultación estelar en 1981. Esta observación sugiere una luna previamente desconocida que orbita el lejano planeta Neptuno.

Área de la Ciencia:

Ciencias planetarias Ciencias planetarias.
La astronomía es la astronomía.
La astrofísica es la astrofísica.

Sus antecedentes:

Neptuno, el octavo planeta desde el Sol, posee un complejo sistema de lunas.
Las ocultaciones estelares son cruciales para estudiar los cuerpos celestes y detectar objetos débiles.

Objetivo del estudio:

Para analizar los datos de monitoreo fotoeléctrico de un evento de ocultación estelar de 1981 que involucró a Neptuno.
Para investigar una caída repentina de la señal observada durante la ocultación para determinar su causa.

Principales métodos:

La fotometría fotoeléctrica se llevó a cabo desde dos observatorios separados por 6 km.
El monitoreo simultáneo a lo largo de la pista de ocultación capturó una caída de señal de 8,1 segundos.

Principales resultados:

La caída de la señal se interpreta como el paso de un satélite no catalogado frente a la estrella.
La duración del evento implica un diámetro mínimo de 180 km para este potencial satélite de Neptuno.
Si se encuentra en el plano ecuatorial de Neptuno, el objeto estaba aproximadamente a 3 radios de Neptuno del centro del planeta.

Conclusiones:

La observación proporciona evidencia de un tercer satélite de Neptuno, distinto de sus lunas conocidas.
Este hallazgo pone de relieve el potencial para descubrir nuevos objetos en el sistema solar exterior a través de estudios de ocultación.

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