Geographos

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Geographos
The asteroid 1620 Geographos was discovered on September 14, 1951, at the Palomar Observatory by Albert George Wilson and Rudolph Minkowski. It was originally given the provisional designation 1951 RA. Its name, a Greek word meaning "geographer" (geo– 'Earth' + graphos 'drawer/writer'), was chosen to honour geographers and the National Geographic Society. Geographos is a Mars-crosser asteroid and a near-Earth object belonging to the Apollos. In 1994, during the asteroid's closest approach to Earth in two centuries at 5.0 Gm-which will not be bettered until 2586- a radar study of it was conducted by the Deep Space Network at Goldstone, California. 1620 Geographos - Wikipedia, the free encyclopedia
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Short Description The asteroid 1620 Geographos was discovered on September 14, 1951, at the Palomar Observatory by Albert George Wilson and Rudolph Minkowski. It was originally given the provisional designation 1951 RA. Its name, a Greek word meaning "geographer" (geo– 'Earth' + graphos 'drawer/writer'), was chosen to honour geographers and the National Geographic Society. Geographos is a Mars-crosser asteroid and a near-Earth object belonging to the Apollos. In 1994, during the asteroid's closest approach to Earth in two centuries at 5.0 Gm-which will not be bettered until 2586- a radar study of it was conducted by the Deep Space Network at Goldstone, California. 1620 Geographos - Wikipedia, the free encyclopedia
Discovered by Albert George Wilson, Rudolph Minkowski
Discovery date 14 September 1951
Type Asteroid
AddInfo Apollo group
Satellite of Sun
Minor planet number 1620
Orbit Prograde
Rotation Direct
Apoapsis 09 248 780 000 km
Periapsis 09 123 813 000 km
Semi-major axis 09 186 290 000 km
Distance from Sun 01 1.245 3 au
Eccentricity 0.335 41
Orbital period 1.39 year | 507.61 days
Orbital speed 02 25.92 km/s
Mean anomaly 180.473°
Inclination to the ecliptic 013.338°
Longitude of the ascending node 337.216°
Argument of periapsis 276.879°
Diameter/Size 01 2.56 km
Dimensions 5.0 × 2.0 × 2.1 km
Mass 1013×2.6 kg
Density 01 2.0 g/cm3
Surface gravity  0.0008 m/s2
Escape velocity 01 1.5 m/s
Rotation period 5.22204 hour | 0.217585 day
Albedo geometric 0.325 8
Temperature mean 03 249 K | −24 °C
Absolute magnitude 15.60
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