In this paper we present new photometric and radial velocity data for the PMS \delta Sct star H254 , member of the young cluster IC 348 .
Photometric V , R _ { C } , I _ { C } light curves were obtained at the Loiano and Asiago telescopes .
The radial velocity data was acquired by means of the SARG @ TNG spectrograph .
High-resolution spectroscopy allowed us to derive precise stellar parameters and the chemical composition of the star , obtaining : T _ { eff } = 6750 \pm 150Â K ; \log g = 4.1 \pm 0.4 dex ; [ Fe/H ] =-0.07 \pm 0.12 dex .
Photometric and spectroscopic data were used to estimate the total absorption in the V band A _ { V } =2.06 \pm 0.05 mag , in agreement with previous estimates .
We adopted the technique of the difference in phase and amplitude between different photometric bands and radial velocities to verify that H254 is ( definitely ) pulsating in a radial mode .
This occurrence allowed us to apply the CORS realization of the Baade–Wesselink method to obtain a value for the linear radius of H254 equal to 3.3 \pm 0.7 R _ { \odot } .

This result was used in conjunction with photometry and effective temperature to derive a distance estimate of 273 \pm 23 pc for H254 , and , in turn for IC 348 , the host cluster .
This value is in agreement within the errors with the results derived from several past determinations and the evaluation obtained through the Hipparcos parallaxes .
Finally , we derived the luminosity of H254 and studied its position in the Hertzsprung–Russell diagram .
From this analysis it results that this \delta –Scuti occupies a position close to the red edge of the instability strip , pulsates in the fundamental mode , has a mass of about 2.2 M _ { \odot } and an age of 5 \pm 1 Myr , older than previous estimates .