Deltan Heliographers observe an irregularity in the magnetic cycle of the star Delta. The shift of the stars magnetic polarity which usually occurs every 12 years has occurred 1 year early.

• 德尔塔日光仪观察到星球德尔塔的磁极周期不规则性变化；该星球每12年移动一次的磁极变化刚刚在一年前发生过。