Orbital characteristics (Epoch J2000)

Semi-major axis 227,936,637 km (141,632,976 Miles) 1.523 662 31 AU
Orbital circumference 1.429 Tm (888,005,041 Miles) 9.553 AU
Eccentricity 0.093 412 33
Perihelion 206,644,545 km (128,402,710 Miles) 1.381 333 46 AU
Aphelion 249,228,730 km (154.863,243 Miles) 1.665 991 16 AU
Orbital period 686.9600 d (1.8808 a)
Synodic period 779.96 d (2.135 a)
Avg. Orbital Speed 24.077 km/s (53,820 Miles / Hour)
Max. Orbital Speed 26.499 km/s (59,220 Miles / Hour)
Min. Orbital Speed 21.972 km/s (49,140 Miles / Hour)
Inclination 1.850 61° (5.65° to Sun's equator)
Longitude of the ascending node 49.578 54°
Argument of the perihelion 286.462 30°
Number of satellites 2

Physical characteristics

Equatorial diameter 6,804.9 km (4228.4 Miles) (0.533 Earths)
Polar diameter 6,754.8 km (4197.2 Miles) (0.531 Earths)
Oblateness 0.007 36 Surface area 1.448×108 km2 (55.907 Million Square Miles) (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 gravity 3.69 m/s2 (0.376g)
Escape velocity 5.027 km/s (11,232 Miles / Hour)
Rotation period 1.025 957 d (24.622 962 h)
Rotation velocity 868.22 km/h (539.49 Miles / Hour) (at the equator)
Axial tilt 25.19°
Right ascension of North pole 317.681 43° (21 h 10 min 44 s)
Declination 52.886 50°
Albedo 0.15

Surface temp.(whole Mars)
- min 133 K(-140 C)
- mean 210 K (-63 C)
- max 293 K (20 C)

Atmospheric characteristics

Atmospheric pressure 0.7-0.9 kPa
Carbon dioxide 95.32%
Nitrogen 2.7%
Argon 1.6%
Oxygen 0.13%
Carbon monoxide 0.07%
Water vapor 0.03%
Nitric oxide 0.01%
Neon 2.5 ppm
Krypton 300 ppb
Xenon 80 ppb
Ozone 30 ppb
Methane 10.5 ppb
(Facts of Wikipedia)