X-ray outburst in BL2005-489 The RXTE All Sky Monitor has detected increased X-ray flux from the BL Lac object 2005-489 (J2000, degrees: 302.3558 -48.8316). During the interval 1998 Oct 11-28, the flux has been in the range of 4 to 10 mCrab at 2-12 keV, which is a factor of 2 to 3 above the its typical intensity during 1996-1998. Observations at other wavelengths are strongly encouraged. Ron Remillard (rr@space.mit/edu) for the ASM instrument teams at MIT and GSFC