1421 Esperanto

1421 Esperanto
Discovery [1]
Discovered by Y. Väisälä
Discovery site Turku Obs.
Discovery date 18 March 1936
Designations
MPC designation (1421) Esperanto
Named after
 Esperanto[2]
1936 FQ · 1931 HC
1958 GD · A906 UD
A917 XD · A920 GD
main-belt
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 110.54 yr (40,373 days)
Aphelion 3.3483 AU
Perihelion 2.8304 AU
3.0894 AU
Eccentricity 0.0838
5.43 yr (1,983 days)
327.78°
0° 10m 53.4s / day
Inclination 9.8099°
42.620°
164.37°
Physical characteristics
Dimensions 43.3 km
21.982 h (0.9159 d)
0.0714±0.011
10.4

    1421 Esperanto, provisional designation 1936 FQ, is an asteroid from the asteroid belt, about 43 kilometers in diameter. It was discovered on March 18, 1936, by the Finnish astronomer Yrjö Väisälä at Iso-Heikkilä Observatory in Turku, Finland.

    Orbit and characterization

    The asteroid orbits the Sun in the outer main-belt at a distance of 2.8–3.3 AU once every 5 years and 5 months (1,983 days). Its orbit has an eccentricity of 0.08 and an inclination of 10° with respect to the ecliptic.of 2.8–3.3 AU once every five and a half years. It rotational period has been measured to take almost 22 hours. It has a relatively low albedo of 0.07.[1]

    Naming

    Yrjö Väisälä named the asteroid after the artificial language, Esperanto, which was created by inventor and writer, Ludwik Lejzer Zamenhof (1859–1917), who used the pseudonym "Doktoro Esperanto".[2] The discoverer also named another asteroid, 1462 Zamenhof, directly after the inventor. Both asteroids are considered to be the most remote Zamenhof-Esperanto objects.

    References

    1. 1 2 3 "JPL Small-Body Database Browser: 1421 Esperanto (1936 FQ)" (2017-04-30 last obs.). Jet Propulsion Laboratory. Retrieved 15 June 2017.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1421) Esperanto. Springer Berlin Heidelberg. p. 114. ISBN 978-3-540-29925-7. Retrieved 22 August 2016.
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