《汉书·志·天文志》
十二月，白气出现在西南方，从地上升到天上，出现在参宿下，横贯天厕星区，广如一匹布，长十多丈，十余曰才离去。
十二月，白气出西南，从地上至天，出参下，贯天厕，广如一匹布，长十余丈，十余日去。
In the twelfth month, a white vapour appeared in the southwest, rising from the ground to the sky and appearing beneath the constellation Shen. It crossed the constellation Tian Ce and was as wide as a bolt of cloth and over a dozen Zhang in length; it lingered for more than ten days before disappearing.