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We present the CoRoT light curve of the bright B2.5V star HD 48977 observedduring a short run of the mission in 2008, as well as a high-resolutionspectrum gathered with the HERMES spectrograph at the Mercator telescope. Weuse several time series analysis tools to explore the nature of the variationspresent in the light curve. We perform a detailed analysis of the spectrum ofthe star to determine its fundamental parameters and its element abundances. Wefind a large number of high-order g-modes, and one rotationally inducedfrequency. We find stable low-amplitude frequencies in the p-mode regime aswell. We conclude that HD 48977 is a new Slowly Pulsating B star withfundamental parameters found to be Teff = 20000 $\pm$ 1000 K and log(g)=4.2$/pm$ 0.1. The element abundances are similar to those found for other B starsin the solar neighbourhood. HD 48977 was observed during a short run of theCoRoT satellite implying that the frequency precision is insufficient toperform asteroseismic modelling of the star. Nevertheless, we show that alonger time series of this star would be promising for such modelling. Ourpresent study contributes to a detailed mapping of the instability strips of Bstars in view of the dominance of g-mode pulsations in the star, several ofwhich occur in the gravito-inertial regime.

High-precision CoRoT space photometry and fundamental parameter determination of the B2.5V star HD 48977