Mars Rotation 2

Mars is the fourth planet from the Sun in the Solar System. The planet is named after Mars, the Roman god of war. It is also referred to as the "Red Planet" because of its reddish appearance, due to iron oxide prevalent on its surface. Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts and polar ice caps of Earth. Unlike the Earth, Mars is now a geologically inactive planet with no tectonic activity. It is the site of Olympus Mons, the highest known mountain in the Solar System, and of Valles Marineris, the largest canyon. The smooth Borealis basin in the northern hemisphere may be a giant impact feature covering 40% of the planet. Mars rotational period and seasonal cycles are likewise similar to those of Earth.

Orbital characteristics (Epoch J2000)
Aphelion 249,209,300 km (1.665 861 AU)
Perihelion 206,669,000 km (1.381 497 AU)
Semi-major axis 227,939,100 km (1.523 679 AU)
Eccentricity 0.093 315
Orbital period 686.971 day
1.8808 Julian years
668.5991 sols
Synodic period 779.96 day
2.135 Julian years
Average orbital speed 24.077 km/s
Inclination 1.850° to ecliptic
5.65° to Sun's equator
1.67° to invariable plane
Longitude of ascending node 49.562°
Argument of perihelion 286.537°
Satellites 2
Physical characteristics
Equatorial radius 3,396.2 ± 0.1 km (533 Earths0
Polar radius 3,376.2 ± 0.1 km (0.531 Earths)
Flattening 0.005 89 ± 0.000 15
Surface area 144,798,500 km² (0.284 Earths)
Volume 1.6318 × 1011 km³ (0.151 Earths)
Mass 6.4185 × 1023 kg (0.107 Earths)
Mean density 3.934 g/cm³
Equatorial surface gravity 3.69 m/s² (0.376 g)
Escape velocity 5.027 km/s
Sidereal rotation
period 1.025 957 day (24.622 96 h)
Equatorial rotation velocity 868.22 km/h (241.17 m/s)
Axial tilt 25.19°
North pole right ascension 21 h 10 min 44 s
317.681 43°
North pole declination 52.886 50°
Albedo 0.15 (geometric) or 0.25 (bond)
Surface temp.
Kelvin
Celsius min mean max
186 K 227 K 268 K
−87 °C −46 °C −5 °C

Apparent magnitude +1.8 to −2.91
Angular diameter 3.5—25.1"
Atmosphere
Surface pressure 0.61.0 kPa
Composition 95.72% Carbon dioxide

2.7% Nitrogen
1.6% Argon
0.2% Oxygen
0.07% Carbon monoxide
0.03% Water vapor
0.01% Nitric oxide
2.5 ppm Neon
300 ppb Krypton
130 ppb Formaldehyde
80 ppb Xenon
30 ppb Ozone
10 ppb Methane

Created with Kurdistan Planetarium

Category:

Science & Technology

Tags:

• NASA
• ESA
• Mars
• mars
• rotation
• planet
• solar
• system
• astronomy
• kurd
• kurdistan