DescripciónDactyl-HiRes.jpg	Galileo highest-res image asteroid Ida's moon (See below for details).
Fecha	13 de enero de 2004
Fuente	https://solarsystem.nasa.gov/galleries/dactyl
Autor	NASA/JPL
Permiso (Reutilización de este archivo)	Public domainPublic domainfalsefalse Este archivo es de dominio público porque fue creado por la NASA. Las políticas sobre copyright de la NASA estipulan que «el material de la NASA no está protegido con copyright a menos que se indique lo contrario». (Políticas sobre copyright de la NASA o Políticas sobre la utilización de imágenes del Jet Propulsion Laboratory). Advertencias: El uso del logotipo de la NASA (incluidos el logotipo actual y los anteriores) está restringido. El sitio web de la NASA almacena una gran cantidad de imágenes del Programa Espacial de la URSS, de la Agencia Espacial Federal Rusa y otras agencias espaciales no estadounidenses. Estas imágenes no son de dominio público. Material del Telescopio espacial Hubble puede tener copyright si no proviene explícitamente del Space Telescope Science Institute. [1] Todo el material creado por la sonda espacial SOHO está protegido por copyright y requiere permiso para ser utilizado con fines comerciales o no educativos. [2] Las imágenes que figuran en el sitio web Astronomy Picture of the Day (APOD) pueden tener copyright. [3]

Resumen

Original description from NASA:

Galileo highest-res image asteroid Ida's moon

This image is the most detailed picture of the recently discovered natural satellite of asteroid 243 Ida taken by the Galileo spacecraft's solid-state imaging camera during its encounter with the asteroid on August 28, 1993. Shuttered through the camera's broadband clear filter as part of a 30-frame mosaic designed to image the asteroid itself, this frame fortuitously captured the previously unknown moon at a range of about 3,900 kilometers (2,400 miles), just over 4 minutes before the spacecraft's closest approach to Ida. Each picture element spans about 39 meters (125 feet) on the surface of the moon.

More than a dozen craters larger than 80 meters (250 feet) in diameter are clearly evident, indicating that the moon has suffered numerous collisions from smaller solar system debris during its history. The larger crater on the terminator is about 300 meters (1,000 feet) across. The satellite is approximately egg-shaped, measuring about 1.2 by 1.4 by 1.6 kilometers (0.75 by 0.87 by 1 mile). At the time this image was shuttered, Ida was about 90 kilometers (56 miles) away from the moon, outside this frame to the left and slightly below center. This image was relayed to Earth from Galileo on June 8, 1994.

The Galileo project, whose primary mission is the exploration of the Jupiter system in 1995-97, is managed for NASA's Office of Space Science by the Jet Propulsion Laboratory.

P-44297 June 27, 1994