SIMBAD references

No x-ray source is detected at the position of 2006dd in a simultaneous 4100-s XRT observation. The 3-sigma upper limit to the XRT net count rate is 8.0 x 10**(-3) counts/s, corresponding to a (0.2- to 10-keV) x-ray flux and luminosity of < 4.0 x 10**(-13) ergs/cm/cm/s and < 2.9 x 10**(40) ergs/s, respectively, for an adopted thermal plasma spectrum with a temperature of kT = 10 keV, a Galactic foreground column density of N_H = 1.89 x 10**(20) (Dickey and Lockman, 1990, ARAA 28, 215), and a distance of 24.5 Mpc (z = 0.00587; Longhetti et al. 1998, A.Ap. Suppl. 130, 267, via NED). No further Swift observations are scheduled due to sun-angle constraints.