本周日一颗新彗星进入北半球观测者视野 这颗编号为 C/2011 L4 的彗星由冰水和尘埃组成,在2011年由位于美国夏威夷的天文望远镜发现的,已经从上个月早些时候开始为在南半球的天文爱好者提供了观测机会。 天文学家说,位于北半球的观测者可以从星期五(3月8日)开始,通过双筒望远镜或小型天文望远镜观察到这颗彗星。并且,彗星会在星期日飞向太阳的时候在北部天空闪现出最亮的光芒。 天文学家说, 这颗彗星来自远离太阳的深空,下次飞临地球附近可能需要再过10万年时间 。所以说,十万年等一回。 Comet C/2011 L4 (PANSTARRS) , discovered by Pan-STARRS 1 telescope on Haleakala, Maui, on the night of 2011, June 5-6, will reach perihelion in March 2013 when it will be located only 0.30 AU from the Sun and might become a bright naked eye object ( with a peak magnitude of anywhere from +1 to -1). At its brightest C/2011 L4 will appear only 15° from the Sun. The comet is now at 3.2 AU from the Sun (m2 ~ 14.0). While visually C/2011 L4 is at m1 ~ 11. http://www.space.com/11996-comet-earth-2013-flyby-c2011l4-pan-starrs.html http://remanzacco.blogspot.co.uk/2012/09/new-update-on-comet-c2011-l4-panstarrs.html