In November 1818, JF Encke was the first to calculate the orbit of a small comet discovered by JL Pons using CF Gauss's method, and discovered that it revolved around the Sun with a period of approximately 3.3 years. He pointed out that the orbits of three comets that appeared in 1786, 1795, and 1805 were similar, and that the intervals between their appearances were integer multiples of 3.3 years, and that these four comets were the same celestial body. This was observed again in 1822, proving Encke's prediction to be correct, and it was revealed that there were short-period comets in the solar system. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
1818年11月,J.L.ポンスが発見した小すい星の軌道を,J.F.エンケは初めてC.F.ガウスの方法で計算し,周期約3.3年で太陽のまわりを公転することを知った。1786年,95年,1805年に出現した3すい星の軌道も似ていて,出現の間隔が3.3年の整数倍であることから,これら4すい星は同じ天体であると指摘した。22年にこれが再び観測され,エンケの予言が的中し,太陽系の中に短周期すい星が存在することが明らかになった。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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