We present the results of the high-resolution spectroscopic observations of the neglected binary system HD 194495 ( B3 IV-V+B4 V ) .
A combined analysis of three different photometric data set ( Tycho B _ { T } and V _ { T } photometry , H _ { p } -band data of Hipparcos and V - band data of ASAS3 photometry ) and radial velocities indicates that the system has an orbital period of 4.90494 \pm 0.00005 days and an inclination of 69 \pm 1 degrees .
This solution yields masses and radii of M _ { 1 } = 7.57 \pm 0.08 M _ { \odot } and R _ { 1 } = 5.82 \pm 0.03 R _ { \odot } for the primary and M _ { 2 } = 5.46 \pm 0.09 M _ { \odot } and R _ { 2 } = 3.14 \pm 0.08 R _ { \odot } for the secondary .
Based on the position of the two stars plotted on a theoretical H-R diagram , we find that the age of the system is \gtrsim 28 Myr , according to stellar evolutionary models .
The spectroscopic and photometric results are in agreement with those obtained using theoretical predictions .