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498 Tokio

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Main-belt asteroid

Tokio
Discovery
Discovered byAuguste Charlois
Discovery siteNice
Discovery date2 December 1902
Designations
MPC designation(498) Tokio
Pronunciation/ˈtoʊkioʊ/
Alternative designations1902 KU
Orbital characteristics
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc112.09 yr (40942 d)
Aphelion3.2459283 AU (485.58396 Gm)
Perihelion2.0591298 AU (308.04143 Gm)
Semi-major axis2.6525291 AU (396.81271 Gm)
Eccentricity0.2237107
Orbital period (sidereal)4.32 yr (1577.9 d)
Mean anomaly178.62454°
Mean motion0° 13 41.327 / day
Inclination9.493271°
Longitude of ascending node97.404216°
Argument of perihelion241.19753°
Physical characteristics
Mean radius40.915±1.15 km
Synodic rotation period41.85 h (1.744 d)
Geometric albedo0.0694±0.004
Absolute magnitude (H)8.95

498 Tokio (1902 KU) is a main-belt asteroid discovered on 2 December 1902 by Auguste Charlois at the Nice Observatory. Attribution to Astronomer Shin Hirayama of the Azabu Observatory, Tokyo, Japan for the 1900 discovery and naming of Tokio as cited in the 1947 Monthly Newsletter of the Royal Astronomical Society Vol 107, page 45.

References

  1. "498 Tokio (1902 KU)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.

Attribution to Astronomer Shin Hirayama of the Azabu Observatory, Tokyo, Japan for the 1900 discovery and naming of Tokio as cited in the 1947 Monthly Newsletter of the Royal Astronomical Society Vol 107, page 45. http://articles.adsabs.harvard.edu/full/seri/MNRAS/0107//0000045.000.html

External links

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