Analysis of the massive eclipsing binary V1441 Aql

•We present new spectroscopic observations of the early type, double-lined eclipsing binary V1441 Aql.•The radial velocities and the available photometric data is analysed for deriving the parameters of the components.•Using the UBVJHK magnitudes we estimated the mean distance to the system V1441 Aql as 550 ± 25 pc.

We present new spectroscopic observations of the early type, double-lined eclipsing binary V1441 Aql. The radial velocities and the available photometric data obtained by ASAS is analysed for deriving the parameters of the components. The components of V1441 Aql are shown to be a B3 IV primary with a mass Mp=8.02±0.51M⊙Mp=8.02±0.51M⊙ and radius Rp=7.33±0.19R⊙ and a B9 III secondary with a mass Ms=1.92±0.14M⊙ and radius Rs=4.22±0.11R⊙. Our analyses show that V1441 Aql is a double-contact system with rapidly rotating components. Based on the position of the components plotted on the theoretical Hertzsprung–Russell diagram, we estimate that the ages of V1441 Aql is about 30 Myr, neglecting the effects of mass exchange between the components. Using the UBVJHK magnitudes and interstellar absorption we estimated the mean distance to the system V1441 Aql as 550 ± 25 pc.