2006年8月24日 捷克布拉格

　　 第26屆國際天文聯合會

　　 “Well, uh... Ladies and gentlemen.

　　 According to the four drafts of No. 5 and No. 6 of our conference, we have the following three items of the reference standard for the definition of planets: 1. orbiting the stars; 2. having enough mass to overcome the solid stress in order to achieve the shape of hydro static equilibrium; 3. clearing the region near its orbit, which means being the largest celestial body in the orbit region and also has enough gravity to ‘attracts’ small objects near both sides of the orbit to become its own satellite.

　　 Based on the current observed data presentation, Pluto, which was discovered in January 1930 by Dr. Clyde Thompson, and has been taken as the ninth planet in the Solar System, its parameters do not fully meet the three requirements mentioned above.

　　 So, according to the just concluded voting, please allow me to announce here that: Pluto has been officially downgraded to a dwarf planet, and its asteroid serial number is defined as 134340.

　　 This resolution will come into force effective immediately. And the above is the content of the final decision of this meeting.

　　 Thank you. Have a good day. ”

　　 中譯文本：

　　 “好的……女士們先生們。

　　 基於專項討論形成5號及6號的四份草案，我們對以下三條關於行星定義的參考標准達成一致：一，圍繞恒星公轉；二，具有足夠質量克服固體引力以達到流體靜力平衡的形狀；三，清除其軌道附近區域，亦即必須作為最大的天體存在於該軌道區域，並有足夠的引力‘吸引’軌道兩側的小型天體成為其衛星。

　　 根據最新觀測數據顯示，冥王星——即由克萊德·湯普森博士於1930年1月所發現的，目前占據太陽系第九大行星位置的天體——其特征不能完全滿足上述三個必要條件。

　　 因此，根據剛剛結束的投票結果，請允許我在此宣布：冥王星已正式被降級為矮行星，其小行星序列號被定為134340。

　　 該結果即時生效。以上為本次會議最終結果的全部內容。

　　 謝謝。祝日安。”