EXO 020528+1454.8

F. A. Cordova, Los Alamos National Laboratory, writes: "The soft x-ray source EXO 020528+1454.8 reported by Hudec and Wenzel (IAUC 4172) has actually been detected previously as the serendipitous Einstein x-ray source 1E 0205+149 and optically identified with a close (~ 4") pair of mag 16 dM4.5e stars by Reichert et al. (1982, Ap.J. 260, 437, although the position given there for the dMe pair was for equinox 1979.9, not the stated 1950.0). From a Palomar Sky Survey plate S. R. Rosen (private communication) has determined the position of the centroid of the pair as R.A. = 2h05m28s25, Decl. = +14deg54'33" (equinox 1950.0, epoch 1950.8, uncertainty < 1"). The pair of stars is almost certainly the Lowell proper-motion object G035-027. Two Einstein Observatory imaging observations included the x-ray source in the field of view. Sequence No. I3817, made on 1979 July 23, gave a source intensity of 0.036 +/- 0.009 IPC cts/s, and sequence No. I7614, made on 1980 July 19-20, gave 0.022 +/- 0.002 IPC cts/s. Examination of the lightcurve from I7614, which represents 23 000 s of observing time spanning 26 hr, shows no flaring or other long-term variability on timescales longer than the 100-s binning used for the analysis. IPC spectral data indicate that the source temperature is ~ 10Y K."