Mars Opposition

Mars Opposition & Facts


For planets outside the Earth’s orbit, like Mars, the months around Oppositions are the best time to observe these planets. An opposition occurs when the planet is opposite from the Sun relative to the Earth.

At Opposition, the planet will rise as the Sunsets and will set as the Sun rises providing an entire night of observation. Also at Opposition, the planet comes physically closest to the Earth in its orbit so it appears as large as possible.

The next Mars opposition occurs: Tue Oct 13, 2020, 19:13:04 GMT-0400 (Eastern Daylight Time)


Some Martian Facts courtesy of NASA


Average Distance from the Sun 227,936,640 km (metric)
141,633,260 miles (english)
Perihelion (closest) 206,600,000 km (metric)
128,400,000 miles (english)
Aphelion (farthest) 249,200,000 km (metric)
154,900,000 miles (english)
Equatorial Radius 3,397 km (metric)
2,111 miles (english)
Equatorial Circumference 21,344 km (metric)
13,263 miles (english)
Volume 163,140,000,000 km3 (metric)
Mass 641,850,000,000,000,000,000,000 kg (metric)
Density 3.94 g/cm3 (metric)
Surface Area 144,100,000 km2 (metric)
89,500,000 mile2 (english)
Equatorial Surface Gravity 3.693 m/s2 (metric)
12.116 ft/s2 (english)
Escape Velocity 18,072 km/h (metric)
11,229 mph (english)
Sidereal Rotation Period (Length of Day) 1.026 Earth days (24.62 hours)
Sidereal Orbit Period (Length of Year) 1.8807 Earth years (686.93 Earth days)
Mean Orbit Velocity 86,871 km/h (metric)
53,979 mph (english)
Orbital Eccentricity 0.0934
Orbital Inclination to Ecliptic 1.8°
Equatorial Inclination to Orbit 25.19
Orbital Circumference 1.366,900,000 km (metric)
849,400,000 miles (english)
Minimum/Maximum Surface Temperature -87° to -5° C (metric)
125° to 23° F (english)
Atmospheric Constituents Carbon Dioxide, Nitrogen, Argon
Mars’ Moons Phobos

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