\\ Species Tag: & 4001 & Name:& H2D+ \\ Version: & 1 & & \\ Date: & Oct. 1989 & & \\ Contributor:& H. M. Pickett & & \\ & & & \\ Lines Listed: & 19 & Q(300.0)=& 73.824 \\ Freq. (GHz) $<$ & 5539 & Q(225.0)=& 49.477 \\ Max. J: & 5 & Q(150.0)=& 27.530 \\ LOGSTR0= & -7.2 & Q(75.00)=& 9.727 \\ LOGSTR1= & -3.4 & Q(37.50)=& 3.102 \\ Isotope Corr.: & -3.347 & Q(18.75)=& 1.215 \\ Egy. (cm$^{-1}$) $>$& 0.0 & Q(9.375)=& 1.004 \\ $\mu_a$ = & 0.6 & A=& 1299960. \\ $\mu_b$ = & & B=& 873685. \\ $\mu_c$ = & & C=& 491480. \headend The frequency fit included rotational lines measured by M. Bogey {\it et al.}, 1984, Astron.~Astrophys.~{\bf 137}, 137, and Saito {\it et al.}, 1985, J. Chem.~Phys.~{\bf 82}, 45. Infrared combination differences from T. Amano and J. K. G. Watson, 1984, J. Chem.~Phys.~{\bf 81}, 2869, were also used.