THE IUE SPECTRUM OF THE PLANETARY-NEBULA NGC-6751

We present the first high-dispersion IUE short-wavelength (SWP) spectr um of NGC 6751 (029.2 -05.9) from which log N-c = 3.9 +/- 0.05 cm(-3), terminal wind velocity nu(infinity) = 2450 +/- 150 km s(-1), and a ma ximum mass-loss rate of M((max)) approximate to 7.9 x 10(-8) M. yr(-1) are determined. Emission-line fluxes from low-dispersion spectra for the epochs 1981 and 1994 are presented which suggest some changes may have occurred. The C III] lambda lambda 1907, 1909 doublet displays an unusual triple-peaked profile in the high-resolution spectrum. The IU E range is characterized by a rich stellar spectrum of carbon lines at various stages of ionization and few nebular lines.