词条 | Planetary data for Mars |
释义 | Planetary 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 opposition -2.01 mean synodic period* 779.94 Earth days mean orbital velocity 24.1 km/s equatorial radius 3,396.2 km north polar radius 3,376.2 km south polar radius 3,382.6 km surface area 1.44 × 108 km2 mass 6.418 × 1023 kg mean density 3.94 g/cm3 mean surface gravity 372 cm/s2 escape velocity 5.022 km/s rotation period (Martian sidereal day) 24 h 37 min 22.663 s Martian mean solar day (sol) 24 h 39 min 36 s inclination of equator to orbit 24.936° mean surface temperature 210 K (-82 °F, -63 °C) typical surface pressure 0.006 bar number of known moons 2 *Time required for the planet to return to the same position in the sky relative to the Sun as seen from Earth. See as table: ![]() |
随便看 |
|
百科全书收录100133条中英文百科知识,基本涵盖了大多数领域的百科知识,是一部内容开放、自由的电子版百科全书。