RX J0558.3+6753 new data sets The Kyoto team has received new data sets which was kindly sent by J. Pietz and A. Oksanen (Thanks!!). The combined light curve shows that the object is fading at a constant rate of 0.4 mag/d. The humps, which were detected on April 1.47 (UT) at Kyoto, were already less prominent in the light curve on April 1.91 taken by J. Pietz. To confirm the furhter fading or a possible rebrightening is essential to study this object. Regards, Makoto Uemura