279 Thule
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279 Thule is a large asteroid from the outer asteroid belt. It is classified as a D-type asteroid and is probably composed of organic-rich silicates, carbon and anhydrous silicates. Thule was the first asteroid discovered with a semi-major axis greater than 4 AU. It was discovered by Johann Palisa on 25 October 1888 in Vienna and was named after the ultimate northern land of Thule.
Thule asteroids
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Thule was the first discovered member of the Thule dynamical group, which as of 2008 was known to consist of three objects: 279 Thule, Template:Mpl, and Template:Mpl.[1] The orbits of these bodies are unusual. They orbit in the outermost edge of the asteroid belt in a 4:3 orbital resonance with Jupiter, the result of the periodic force Jupiter exerts on a body with Thule's orbital period, in the same way (though with the reverse effect) as the Kirkwood gaps in the more inner parts of the asteroid belt.
| Name | semimajor axis (au) | period (years) | eccentricity | inclination (°) | absolute magnitude | Size (km) |
|---|---|---|---|---|---|---|
| 279 Thule | 4.269 | 8.82 | 0.0432 | 2.334 | 8.53 | Script error: No such module "val". |
| Template:Mpl | 4.290 | 8.89 | 0.1335 | 7.132 | 13.84 | Script error: No such module "sort". |
| Template:Mpl | 4.278 | 8.85 | 0.2513 | 3.238 | 14.53 | Script error: No such module "sort". |
| Template:Mpl | 4.286 | 8.87 | 0.0465 | 5.501 | 15.1 | Script error: No such module "sort". |
| Template:Mpl | 4.288 | 8.88 | 0.1161 | 3.497 | 15.49 | Script error: No such module "sort". |
| Template:Mpl | 4.297 | 8.91 | 0.2312 | 3.193 | 15.5 | Script error: No such module "sort". |
| Template:Mp | 4.283 | 8.86 | 0.3722 | 5.935 | 16.5 | Script error: No such module "sort". |
See also
- 486958 Arrokoth – A cubewano that was formerly nicknamed Ultima Thule
References
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External links
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