mean orbit
51asteroid — asteroidal, adj. /as teuh royd /, n. 1. Also called minor planet. Astron. any of the thousands of small bodies of from 480 miles (775 km) to less than one mile (1.6 km) in diameter that revolve about the sun in orbits lying mostly between those… …
52Europa (moon) — Europa Europa s trailing hemisphere in approximate natural color. The prominent crater in the lower right is Pwyll and the darker regions are areas where Europa s primarily water ice surface has a higher mineral content. Imaged on September 7,… …
53Vega — Starbox begin name=Vega Starbox image caption = Location of Vega in the constellation Lyra. Starbox observe epoch=J2000.0 constell=Lyra ra=RA|18|36|56.3364cite web author=Staff date=October 30, 2007 url=http://simbad.u strasbg.fr/simbad/sim… …
54Metis (moon) — Metis Image of Metis was taken by Galileo s solid state imaging system between November 1996 and June 1997. Discovery Discovered by S. Synnott Discovery date March 4, 1979 …
55Margaret (moon) — Margaret Subaru 8.3 meter telescope discovery image Discovery Discovered by Scott S. Sheppard, and David C. Jewitt …
56Ecliptic — The ecliptic is the apparent path that the Sun traces out in the sky during the year. As it appears to move in the sky in relation to the stars, the apparent path aligns with the planets throughout the course of the year. More accurately, it is… …
57Daphnis (moon) — Daphnis Daphnis in cropped Cassini probe image (July 06, 2010). Discovery Discovered by Cassini Imaging Science Team …
58Co-orbital moon — Co orbital moons are natural satellites that orbit at the same (or very similar) distance from their parent planet as each other. Only the Saturn system is known to have co orbital moons, and it has three sets. Two of these are sets of Trojan… …
59Cordelia (moon) — Cordelia Cordelia (lower middle, inside of bright ring), discovery image from Voyager 2 Discovery Discovered by Richard J. Terrile …
60Ophelia (moon) — There is also an asteroid called 171 Ophelia. Ophelia Discovery image of Ophelia (top of image, outside of rings) Discovery Discovered by …
