> I have analyzed the same DSS2 image, and obtained the stellar magnitude >around 21.6. I hope someone could check the result independently. I have performed an aperture photometry by substracting the flux of opposite point of the background galaxy. It implied that "1998di" was around 20.1 mag. I have used Taichi's position value, so strictly speeking, it is not an independent measurement. I also hope that someone will examine independently. Sincerely Yours, Hitoshi Yamaoka, Kyushu Univ., Japan yamaoka@rc.kyushu-u.ac.jp