Mathilde

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Mathilde
Math is a main-belt asteroid about 50 km in diameter. It is a primitive C-type asteroid, which means the surface has a high proportion of carbon; giving it a dark surface that reflects only 4% of the light that falls on it. This asteroid was visited by the NEAR Shoemaker spacecraft during June 1997. The asteroid has a number of extremely large craters, with the individual craters being named for coal fields and basins around the world. 253 Mathilde - Wikipedia, the free encyclopedia
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Additional Information

Short Description Math is a main-belt asteroid about 50 km in diameter. It is a primitive C-type asteroid, which means the surface has a high proportion of carbon; giving it a dark surface that reflects only 4% of the light that falls on it. This asteroid was visited by the NEAR Shoemaker spacecraft during June 1997. The asteroid has a number of extremely large craters, with the individual craters being named for coal fields and basins around the world. 253 Mathilde - Wikipedia, the free encyclopedia
Discovered by Johann Palisa
Discovery date 12 November 1885
Type Asteroid
Satellite of Sun
Minor planet number 253
Orbit Prograde
Rotation Direct
Apoapsis 09 501 157 970 km
Periapsis 09 291 232 680 km
Semi-major axis 09 396 195 322 km
Distance from Sun 01 2.648 402 147 au
Eccentricity 0.26492652
Orbital period 4.31 years | 1574.3 days
Orbital speed 02 17.98 km/s
Mean anomaly 170.584 348°
Inclination to the ecliptic 006.742 712 2°
Longitude of the ascending node 179.589 36°
Argument of periapsis 157.396 42°
Diameter/Size 02 52.8 km
Dimensions 66×48×46 km
Mass 1017×1.033 kg
Density 01 1.3 g/cm3
Surface gravity  0.009 89 m/s2
Escape velocity 02 22.9 m/s
Rotation period 417.7 hours | 17.40 days | 17 days 9 hours 45 min
Albedo geometric 0.0436
Temperature mean 03 174 K
Absolute magnitude 10.3
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