Helene
© NASA / JPL / SSI / J. MajorColor composite of Helene from June 18, 2011 flyby.
On June 18, 2011, the Cassini spacecraft performed a flyby of Saturn's moon Helene. Passing at a distance of 6,968 km (4,330 miles) it was Cassini's second-closest flyby of the icy little moon.

The image above is a color composite made from raw images taken with Cassini's red, green and blue visible light filters. There's a bit of a blur because the moon shifted position in the frames slightly between images, but I think it captures some of the subtle color variations of lighting and surface composition very nicely!

Below is a 3D anaglyph view of Helene made from the recent raw images by Patrick Rutherford... if you have a pair of red/blue glasses, check it out!

Helene_1
© NASA / JPL / Space Science Institute.3D anaglyph of Helene assembled by Patrick Rutherford.
Cassini passed from Helene's night side to its sunlit side. This flyby will enable scientists to create a map of Helene so they can better understand the moon's history and gully-like features seen on previous flybys.

Helene orbits Saturn at the considerable distance of 234,505 miles (377,400 km). Irregularly-shaped, it measures 22 x 19 x 18.6 miles (36 x 32 x 30 km).

Helene is a "Trojan" moon of the much larger Dione - so called because it orbits Saturn within the path of Dione, 60º ahead of it. (Its little sister Trojan, 3-mile-wide Polydeuces, trails Dione at the rear 60º mark.) The Homeric term comes from the behavioral resemblance to the Trojan asteroids which orbit the Sun within Jupiter's path...again, 60º in front and behind. These orbital positions are known as Lagrangian points (L4 and L5, respectively.)

Read more on the Cassini mission site here.

Helene_2
© NASA / JPL / Space Science Institute.An irregular crescent: Cassini's flyby of Helene on June 18, 2011.