We present an optical and X-ray study of the quasar QSO 0117-2837 .
It exhibits an interesting combination of optical and X-ray properties : Despite its extremely steep observed X-ray spectrum ( \Gamma _ { x } \simeq - 4 when fit by a simple powerlaw ) , its Balmer lines are fairly broad .
A two-component Gaussian fit to H \beta yields FWHM _ { H \beta,broad } \simeq 4000 km/s , and places QSO 0117-2837 in the ‘ zone of avoidance ’ in the FWHM _ { H \beta } – \Gamma _ { x } diagram .
A time variability analysis shows that QSO 0117-2837 is another case of Narrow-line Sy 1 galaxy ( NLSy1 hereafter ) which does not show any X-ray variability during the observation .
The results are discussed in view of the NLSy1 character of QSO 0117-2837 .

KEYWORDS : Galaxies : active , quasars : individual : QSO 0117-2837 , quasars : emission lines , X-rays : galaxies