PLANETS Photos of planets are not proportionally to scale. SYMBOL DIAMETER AVERAGE DISTANCE FROM SUN (MILLION MI OR KM) MASS ROTATIONAL PERIOD (LENGTH OF DAY IN EARTH DAYS) PERIOD OF REVOLUTION ABOUT THE SUN (1 PLANETARY YEAR IN EARTH DAYS) Mercury Inner Planet 3,032 mi 4,878 km 36.0 mi 57.9 km 3.30 x 10 23 kg 58.64 days 88.0 days Venus Inner Planet 7,521 mi 12,104 km 67.2 mi 108.2 km 4.87 x 10 24 kg 243 days (retrograde) 224.7 days Earth Inner Planet 7,926 mi 12,756 km 93.0 mi 149.6 km 5.98 x 10 24 kg 23 hrs, 56 min, 4.1 sec 365.2 days Mars Inner Planet 4,221 mi 6,794 km 141.6 mi 227.9 km 6.42 x 10 23 kg 24 hrs, 37 min, 22.3 sec 687 days Jupiter Outer Planet 88,846 mi 142,984 km 483.8 mi 778.6 km 1.90 x 10 27 kg 9 hrs, 50 min (equator) 9 hrs, 55 min (poles) 4,331 days Saturn Outer Planet 74,897 mi 120,536 km 890.8 mi 1,433.5 km 5.68 x 10 26 kg 10 hrs, 39 min 10,747 days Uranus Outer Planet 31,763 mi 51,118 km 1,784.8 mi 2,872.5 km 8.68 x 10 25 kg 17 hrs, 14 min (retrograde) 30,589 days Neptune Outer Planet 30,775 mi 49,528 km 2,793.1 mi 4,495.1 km 1.02 x 10 26 kg 16 hrs, 7 min 59,800 days SYMBOL DIAMETER MAX. DISTANCE FROM EARTH MASS ROTATIONAL PERIOD (LENGTH OF DAY IN EARTH DAYS) INTERIOR TEMPERATURE Sun 864,000 mi 1,390,000 km 94.5 million mi 152 million km 1.98 x 10 30 kg Rotates in 25 days (equator) or 34 days (poles) 15 million K ROTATIONAL PERIOD (LENGTH OF DAY IN EARTH DAYS) AVERAGE EARTH–MOON DISTANCE Moon 27.32 days 3.84 x 108 m INNER SOLAR SYSTEM SUN MERCURY: 0.39 VENUS: 0.72 EARTH: 1.0 MARS: 1.5 JUPITER: 5.2 SATURN: 9.5 URANUS: 19.2 NEPTUNE: 30.1 Our Solar System PLANETARY DISTANCES The average distance from a planet to the sun is measured in Astronomical Units (AU). 1.0 AU is defined as 9.3 x 107 miles or 1.5 x 108 km. Measurements given in the diagram are in AU. Not to scale. STATISTICS PHASES OF THE MOON THIRD QUARTER FIRST QUARTER WANING CRESCENT WAXING CRESCENT FULL WANING GIBBOUS WAXING GIBBOUS NEW Statistics from June 2017. Sources: nssdc.gsfc.nasa. gov/planetary/factsheet/planet_table_british.html nssdc.gsfc.nasa.gov/planetary/factsheet/index.html R–15 RESOURCE PAGES
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