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(719) Albert : ウィキペディア英語版
719 Albert

719 Albert is a Mars-crossing, Amor asteroid; it was the second one discovered after 433 Eros.
== Discovery ==

Discovered in 1911 by Johann Palisa, the asteroid was named after one of the Imperial Observatory in Vienna's major benefactors, Albert Salomon von Rothschild, who had died some months before.〔 Due to inaccuracies in the asteroid's computed orbit it was subsequently lost and not recovered until 2000 by Jeffrey Larsen using data from the Spacewatch asteroid survey project. When it was recovered in 2000, Albert was the last "lost asteroid" among those assigned numbers (69230 Hermes was not numbered until 2003). The second-to-last "lost" numbered asteroid, 878 Mildred, had been recovered in 1991.〔
When it was rediscovered, 719 Albert was mistakenly thought to be a new asteroid and was designated . Upon further investigation, however, it was noticed that its orbital plane matched up nicely with the last remaining "lost" asteroid and it was properly identified. Using the new observational data the period was determined to be about 4.28 years instead of the 4.1 years calculated in 1911; this was the primary reason the asteroid was lost.〔

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