天王星与依巴谷恒星的合

A Special Phenomenon’s Prediction A Very Close Conjunction Between Uranus and a Hipparcos Star

根据最新星历表 ,天王星及其卫星系统将于 2 0 0 1年 9月 6日～ 1 1日期间经过 2颗较亮的恒星。它们分别是依巴谷恒星 (星号 1 0 682 9)和ACT星表恒星 (AC2 0 0 0星号 2 5881 65)。其中天王星与依巴谷恒星的最小角距离为 5.90″,5颗主要卫星 (Mirands,Ariel,Umbriel,Titania和Oberon)中与依巴谷恒星最小角距离的是Titania ,角距离仅为 2 .0 8″。届时 。

According to the most recent ephemerides,Uranus and its satellites will pass by two bright stars during Sept.6-11,2001.The two stars are among Hipparcos Catalogue (star number 106829) and ACT Catalogue (AC2000:2588165),respectively.During this period of time,the shortest angle distance between the Hipparcos star and Uranus will be 5.″90.The shortest one among the distances between the star and each Uranian primary satellite (Miranda,Ariel,Umbriel,Titanian and Oberion) will be 2.″08.The CCD observations on a telescope with a long focal length will be of great importance for this very close conjunction phenomenon.