(1421) Esperanto
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Asteroid (1421) Esperanto |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 3.0911 AU |
| eccentricity | 0.0780 |
| Perihelion - aphelion | 2.8501 AU - 3.3321 AU |
| Inclination of the orbit plane | 9.818 ° |
| Sidereal period | 5.435 a |
| Mean orbital velocity | 16.942 km / s |
| Physical Properties | |
| Medium diameter | 43.31 km |
| Dimensions | ? kg |
| Albedo | 0.071 |
| Medium density | ? g / cm³ |
| Rotation period | ? H |
| Absolute brightness | 10,251 mag |
| Spectral class | ? |
| history | |
| Explorer | Yrjö Väisälä |
| Date of discovery | March 18, 1936 |
| Another name | 1936 FQ, 1931 HC, 1958 GD |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(1421) Esperanto is an asteroid of the main belt that was discovered on March 18, 1936 by the Finnish astronomer Yrjö Väisälä in Turku .
The asteroid was named after the planned language Esperanto . Two years later the asteroid (1462) was named Zamenhof after its inventor Ludwik Lejzer Zamenhof .