标签：#泛星望遠鏡發現的天體

C/2017 K2 (泛星彗星)

註解 外部連結 [http://iopscience.iop.org/article/10.3847/2041-8213/aa88b4 A Comet Active Beyond the Crystallization Zone] [http://www.minorplanetcenter.net/mpec/K17/K17K90.html MPEC 2017-K90 : COMET C/2017 K2 (PANSTARRS)] [htt…