title: A revisit to the guest star of a.d. 185.
abstract: The guest star of A.D. 185 is possibly the earliest recorded supernova, and the radio source RCW 86 is believed to be its remnant. However, a restudy of ancient Chinese literature suggests that RCW 86 is unrelated to the guest star, which probably had a visible duration of only 7 months and appeared between beta and delta Centauri, instead of the previously proposed 20-mtonth duration and a location between alpha and ,beta Centauri.
authors.forename: Y L
authors.initials: YL
authors.lastname: Huang
authors.forename: G H
authors.initials: GH
authors.lastname: Moriarty-Schieven