Asteroid 1620 Geographos
Its name means geographer and was chosen to honour the National Geographic Society.
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| Alternate designation | 1951 RA |
| Classification | Apollo, Mars-crosser, NEO, PHA |
Osculating Orbital Elements
| Epoch | 2447757,5 |
| Semi major axis | 1,2448 AU |
| Period [Julian yrs] | 1,389 Julian years |
| Inclination | 13,325 ° |
| Eccentricity | 0,3355 |
| Lon. of ascending node | 337,412 ° |
| Argument of perihelion | 276,594 ° |
| Passage of perihelion | 1990-Apr-27.065122 |
| Aphelion distance | 1,6625 AU |
| Mean anomaly | 181,834 ° |
Physical Data
| Radius | 1,00 km |
| Rotation period | 5,223 days |
| Absolute magnitude (H) | 15,6 |
| Magnitude Slope (G) | 0,15 |
| Color index (B-V) | 0,862 |
| Geometric albedo | 0,3258 |
| Spectral class | S |
Discovery Circumstances
| Discoverer | A.G. Wilson and R. Minkowski |
| Discovered | 1951-09-14 |
Data File
| Data File Name | 1620_Geographos.aed |
| Data File Date | 2006-07-19 |
| Data File Size | 2714 kB |
| Covered Period | 1800,00 - 2100,00 |
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