就在过去几天里delta达到了最亮，目视星等估计为1.7或1.6等。

In just the last few days naked-eye estimates put it around magnitude 1.7 or 1.6, its brightest yet.

youdao

就在过去几天里delta达到了最亮，目视星等估计为1.7或1.6等。

In just the last few days naked-eye estimates put it around magnitude 1.7 or 1.6, its brightest yet.

youdao