V426 Sagittae (HBHA 1704-05) light curves

The star V426 Sge (HBHA 1704-05), originally classified as an emission-line object and a semi-regular variable, brightened at the beginning of August 2018, showing signatures of...恒星V426 Sge（HBHA 1704-05）最初被归类为发射线天体（emission-line object）与半规则变星（semi-regular variable），于2018年8月初出现增亮现象，并展现出……的特征。