Pictured in natural color in 2007 [a] |
| Adjectives |
Martian |
| Epoch J2000 |
| Aphelion |
249261000 km
(154884000 mi; 1.66621 AU)[1] |
| Perihelion |
206650000 km
(128410000 mi; 1.3814 AU)[1] |
|
|
227939366 km
(141634956 mi; 1.52368055 AU)[2] |
| Eccentricity |
0.0934[1] |
|
|
686.980 d
(1.88085 yr; 668.5991 sols)[1] |
|
|
779.94 d
(2.1354 yr)[2] |
|
|
24.07 km/s
(86700 km/h; 53800 mph)[1] |
|
|
19.412°[1] |
| Inclination |
|
|
|
49.57854°[1] |
|
|
2022-Jun-21[4] |
|
|
286.5°[2] |
| Satellites |
2 |
|
Mean radius
|
3389.5 ± 0.2 km[b] [6]
(2106.1 ± 0.1 mi) |
|
|
3396.2 ± 0.1 km[b] [6]
(2110.3 ± 0.1 mi; 0.533 Earths) |
|
|
3376.2 ± 0.1 km[b] [6]
(2097.9 ± 0.1 mi; 0.531 Earths) |
| Flattening |
0.00589±0.00015[4][6] |
|
|
144.37×106 km2[7]
(5.574×107 sq mi; 0.284 Earths) |
| Volume |
1.63118×1011 km3[8]
(0.151 Earths) |
| Mass |
6.4171×1023 kg[9]
(0.107 Earths) |
|
|
3.9335 g/cm3[8]
(0.1421 lb/cu in) |
|
|
3.72076 m/s2[10]
(12.2072 ft/s2; 0.3794 g) |
|
|
0.3644±0.0005[9] |
|
|
5.027 km/s
(18100 km/h; 11250 mph)[11] |
|
|
1.02749125 d[12]
24h 39m 36s |
|
|
1.025957 d
24h 37m 22.7s[8] |
|
Equatorial rotation velocity
|
241 m/s
(870 km/h; 540 mph)[1] |
|
|
25.19° to its orbital plane[1] |
|
|
317.68143°[6]
21h 10m 44s |
|
|
52.88650°[6] |
| Albedo |
|
|
|
| Surface absorbed dose rate |
8.8 μGy/h[17] |
| Surface equivalent dose rate |
27 μSv/h[17] |
|
|
−2.94 to +1.86[14] |
|
|
3.5–25.1″[1] |
|
|
0.636 (0.4–0.87) kPa
0.00628 atm |
| Composition by volume |
|
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