On the Nature of SCT X-1

A follow-up observation on the peculiar X-ray pulsar Sct X-1 was made. The X-ray flux was very weak (about 0.8 mCrab), and the X-ray spectrum exhibited a large absorption of about N_H = 10(23) Hcm(-2) . We have confirmed coherent pulsation having a period of 111.194 +/- 0.003 s. Combined with the previous observation, this implies that the rate of the pulse period change (dot {P}) is 3.3 times 10(-9) s s(-1) . From the large dot {P}, we can say that Sct X-1 is more likely to be a neutron star binary than a DQ Her type star. Still, an additional pulse timing study for a time span longer than about 10 hr is necessary for a firm conclusion.