In an interview in 2003, historian Nicholas Kollerstrom concluded that Adams's claim to Neptune was far weaker than had been suggested, as he had vacillated repeatedly over the planet's exact location, with estimates ranging across 20 degrees of arc.
2003年のインタビューで、歴史家のNicholas Kollerstromは、海王星についてのアダムズの主張はこれまで考えられていたよりもずっと弱く、惑星の正確な位置についても、推定20°の弧の中で何度も迷っていたと結論づけた。