注:依照(zhao)至太(tai)陽的距離,行(xing)星(xing)(xing)(xing)(xing)(xing)序是水(shui)星(xing)(xing)(xing)(xing)(xing)、金星(xing)(xing)(xing)(xing)(xing)、地球、火星(xing)(xing)(xing)(xing)(xing)、木星(xing)(xing)(xing)(xing)(xing)、土(tu)星(xing)(xing)(xing)(xing)(xing)、天王星(xing)(xing)(xing)(xing)(xing)、海王星(xing)(xing)(xing)(xing)(xing)、冥王星(xing)(xing)(xing)(xing)(xing),2006年8月24日下(xia)午,在(zai)第26屆國際(ji)天文聯(lian)會通過第5號決議,由(you)天文學家(jia)以投票正式將冥王星(xing)(xing)(xing)(xing)(xing)劃為矮行(xing)星(xing)(xing)(xing)(xing)(xing),自行(xing)星(xing)(xing)(xing)(xing)(xing)之列(lie)中除名。