mean density
111Film grain — or granularity is the random optical texture of processed photographic film due to the presence of small grains of a metallic silver developed from silver halide that have received enough photons.RMS granularityGranularity, or RMS granularity, is …
112Planetary data for Earth — ▪ Table Planetary data for Earth mean distance from Sun 149,600,000 km (1.0 AU) eccentricity of orbit 0.0167 inclination of orbit to ecliptic 0.000° Earth year (sidereal period of revolution) 365.256 days mean orbital velocity 29.79 km/sec… …
113Planetary data for Venus — ▪ Table Planetary data for Venus mean distance from Sun 108,200,000 km (0.72 AU) eccentricity of orbit 0.007 inclination of orbit to ecliptic 3.4° Venusian year (sidereal period of revolution) 224.7 Earth days maximum visual magnitude –4.6 mean… …
114Basic data for Pluto — ▪ Table Basic data for Pluto mean distance from Sun 5,910,000,000 km (39.5 AU) eccentricity of orbit 0.251 inclination of orbit to ecliptic 17.1° Plutonian year (sidereal period of revolution) 247.69 Earth years visual magnitude at mean… …
115Planetary data for Mars — ▪ Table Planetary data for Mars mean distance from Sun 227,941,040 km (1.5 AU) eccentricity of orbit 0.093 399 inclination of orbit to ecliptic 1.850 20° Martian year (sidereal period of revolution) 686.980 Earth days visual magnitude at mean… …
116Planetary data for Mercury — ▪ Table Planetary data for Mercury mean distance from Sun 57,910,000 km (0.4 AU) eccentricity of orbit 0.2056 inclination of orbit to ecliptic 7.004° Mercurian year (sidereal period of revolution) 87.9694 Earth days maximum visual magnitude 1.9… …
117Italy — • In ancient times Italy had several other names: it was called Saturnia, in honour of Saturn; Enotria, wine producing land; Ausonia, land of the Ausonians; Hesperia, land to the west (of Greece); Tyrrhenia, etc. The name Italy, which seems to… …
118Margaret (moon) — Margaret Subaru 8.3 meter telescope discovery image Discovery Discovered by Scott S. Sheppard, and David C. Jewitt …
119Planetary data for Neptune — ▪ Table Planetary data for Neptune mean distance from Sun 4,498,250,000 km (30.1 AU) eccentricity of orbit 0.0086 inclination of orbit to ecliptic 1.77° Neptunian year (sidereal period of revolution) 163.72 Earth years visual magnitude at mean… …
120Adrastea (moon) — Infobox Planet name = Adrastea bgcolour = #a0ffa0 caption = Image of Adrastea taken by Galileo spacecraft between November 1996 and June 1997 discoverer = David C. Jewitt nowrap|G. Edward Danielson discovered = July 8, 1979 mean orbit radius =… …
