2478 Tokai
Stony Florian asteroid and binary system / From Wikipedia, the free encyclopedia
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2478 Tokai, provisionally designated 1981 JC, is a stony Florian asteroid and binary system from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 4 May 1981, by Japanese astronomer Toshimasa Furuta at Tōkai Observatory (879), Japan.[14] The asteroid was named after the city of Tōkai.[2]
Quick Facts Discovery, Discovered by ...
Discovery [1] | |
---|---|
Discovered by | T. Furuta |
Discovery site | Tōkai Obs. (879) |
Discovery date | 4 May 1981 |
Designations | |
(2478) Tokai | |
Pronunciation | /ˈtoʊkaɪ/ Japanese: [toːkai] |
Named after | Tōkai (Japanese city)[2] |
1981 JC · 1931 HH 1932 SE · 1934 ED 1939 VH · 1951 JP 1955 OE · 1955 QV 1957 BD · 1972 RS 1978 NU2 · 1979 XR 1981 JT | |
main-belt · Flora [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 84.68 yr (30,929 days) |
Aphelion | 2.3781 AU |
Perihelion | 2.0740 AU |
2.2261 AU | |
Eccentricity | 0.0683 |
3.32 yr (1,213 days) | |
103.28° | |
0° 17m 48.48s / day | |
Inclination | 4.1389° |
228.80° | |
233.85° | |
Known satellites | 1[3][4][5] |
Physical characteristics | |
Dimensions | 9.238±0.112 km[6] 9.36±1.51 km[7] 9.71±0.49 km[8] 9.982±0.031 km[9] 10.087 km[10] 10.09 km (taken)[3] |
25.88±0.01 h[lower-alpha 1] 25.885±0.007 h[11] 25.8913 h[lower-alpha 2] 25.97±0.11 h[12] | |
0.144±0.015[8] 0.1957[10] 0.2084±0.0371[9] 0.252±0.045[6] 0.33±0.20[7] | |
SMASS = S [1] · S [3] | |
11.88±0.03 (R)[lower-alpha 2] · 12.00[7] · 12.15±0.04[13] · 12.2[1] · 12.33[9] · 12.37±0.058[3][10] · 12.80[8] | |
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