Sedna has a 11,400 year orbital period which reaches perihelion in 2076. Consider constructing a space probe to land on it or (very stably) orbit it for a full solar orbit, ostensibly to study then report back on conditions in the outer solar system.
Can we construct a machine that will remain functional for 11,000 years? It's kind of like a time capsule. Unlike the clock of the Long Now, Sedna will probably see very little disturbances like weather.
Is landing on a large solid body easier or better than simply putting a probe onto a solitary 11,000 year orbit? Perhaps less likely to be gravitationally perturbed and lost.
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