🔵 Tianyue — 4 Sgr
Blue-white A0 star in #Sagittarius, mag 4.72.
🌡️ 9661 K | 3.30 M☉ | 436 ly
“Celestial Keyhole” Tiān Yuè, a Chinese asterism governing opening and closing.
#Tianyue #IAUStarNames #ChineseAstronomy