| 词条 | 498 Tokio |
| 释义 |
| minorplanet = yes | background = #D6D6D6 | name = Tokio | image = | caption = | discovery_ref = | discoverer = Auguste Charlois | discovery_site = Nice | discovered = 2 December 1902 | mpc_name = (498) Tokio | alt_names = 1902 KU | mp_category = | orbit_ref = [1] | epoch = 31 July 2016 (JD 2457600.5) | aphelion = {{Convert|3.2459283|AU|Gm|abbr=on|lk=on}} | perihelion = {{Convert|2.0591298|AU|Gm|abbr=on}} | semimajor = {{Convert|2.6525291|AU|Gm|abbr=on}} | eccentricity = 0.2237107 | period = 4.32 yr (1577.9 d) | inclination = 9.493271° | asc_node = 97.404216° | mean_anomaly = 178.62454° | arg_peri = 241.19753° | dimensions = | mean_radius = {{val|40.915|1.15}} km | mass = | density = | albedo = {{val|0.0694|0.004}} | spectral_type = | abs_magnitude = 8.95 | mean_motion = {{Deg2DMS|0.2281465|sup=ms}} / day | observation_arc = 112.09 yr (40942 d) | uncertainty = 0 | rotation = {{Convert|41.85|h|d|abbr=on|lk=on}} }} Tokio (minor planet designation: 498 Tokio) (1902 KU) is a main-belt asteroid discovered on 2 December 1902 by Auguste Charlois at the Nice Observatory. References1. ^{{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=498;cad=1 |title=498 Tokio (1902 KU) |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=6 May 2016}} External links
7 : Background asteroids|Discoveries by Auguste Charlois|Discoveries by Shin Hirayama|Minor planets named for places|Named minor planets|M-type asteroids (Tholen)|Astronomical objects discovered in 1902 |
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