2478 Tokai
| Discovery [1] | |
|---|---|
| Discovered by | T. Furuta |
| Discovery site | Tokai (879) |
| Discovery date | 4 May 1981 |
| Designations | |
| MPC designation | 2478 Tokai |
|
Named after
|
Tokai (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 | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 82.98 yr (30,308 days) |
| Aphelion | 2.3773 AU |
| Perihelion | 2.0741 AU |
| 2.2257 AU | |
| Eccentricity | 0.0681 |
| 3.32 yr (1212.8 days) | |
| 226.21° | |
| Inclination | 4.1371° |
| 228.81° | |
| 233.42° | |
| Known satellites | 1[3] |
| Earth MOID | 1.0946 AU |
| Physical characteristics | |
| Dimensions | ~ 7–15 km[4] |
| 25.89 h | |
| S (SMASSII) | |
| 12.0 mag | |
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2478 Tokai, provisionally designated 1981 JC, is a main-belt asteroid discovered on May 4, 1981 by prolific Japanese astronomer Toshimasa Furuta at Tōkai, Aichi.[1] It is named after the city of its discovery.[2]
Since the albedo of this asteroid is unknown, the size can only be estimated as between about 7–15 kilometers, based on the absolute magnitude (H) of 12.[4]
Satellite
Photometric observations in 2007 revealed a ~7+km satellite (lower limit diameter ratio of 0.72) with an orbital period of 25.88 hours.[3]
References
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- Orbital simulation from JPL (Java) / Ephemeris
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