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First Asteroid Found Inside Orbit of Venus

金星軌道內發現首顆小行星

精英翻譯社轉自https://features.ltn.com.tw/english/article/paper/1347160

◎劉宜庭

A rare asteroid orbiting snugly within the inner confines of our solar system has been discovered by Caltech’s Zwicky Transient Facility, or ZTF, a survey camera based at Palomar Observatory.

美國加州理工學院位於帕洛馬山天文台的「史維基瞬變設備」（ZTF）巡天鏡頭，已經發現一顆罕見的小行星，它隱蔽地運行在我們太陽系的行星軌道內側。

The newfound body, named 2020 AV2, is the first asteroid found to orbit entirely within the orbit of Venus. 2020 AV2 belongs to a small class of asteroids known as Atiras, which are bodies with orbits that fall within the orbit of Earth.

這顆新發現的天體，被命名為「2020 AV2」，是第一顆完全在金星軌道內運行的小行星。2020 AV2隸屬於運行軌道落在地球軌道內的「Atira」型小行星群。

The ZTF camera is particularly adept at finding asteroids because it scans the entire sky rapidly and thus can catch the asteroids during their short-lived appearances in the night sky.

史維基瞬變設備的鏡頭特別擅長搜尋小行星，它能快速掃視整個天空，藉此捕捉到在夜空中曇花一現的小行星。

2020 AV2 is the third Atira discovered by ZTF as part of its Twilight program developed by Wing-Huen Ip of the National Central University in Taiwan, and Quanzhi Ye, formerly of Caltech and now at the University of Maryland.

2020 AV2是史維基瞬變設備發現的第三顆Atira型小行星，也是「暮光巡天」觀測計畫的一部分，該計畫由台灣中央大學的葉永烜（Wing-Huen Ip），與早前在加州理工學院、目前在（美國）馬里蘭大學的葉泉志（Quanzhi Ye）推動。