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We analysed the IGR J16465–4507 Burst Alert Telescope (BAT) survey data collected during the first 54 months of the  Swift  mission. The source is in a crowded field and it is revealed through an ad hoc imaging analysis at a significance level of ∼14 standard deviations. The 15–50 keV average flux is . The timing analysis reveals an orbital period of 30.243 ± 0.035 d. The folded light curve shows the presence of a wide phase interval of minimum intensity, lasting ∼20 per cent of the orbital period. This could be explained with a full eclipse of the compact object in an extremely eccentric orbit or with the passage of the compact source through a lower density wind at the orbit apastron. The modest dynamical range observed during the BAT monitoring suggests that IGR J 16465− 4507 is a wind‐fed system, continuously accreting from a rather homogeneous wind, and not a member of the supergiant fast X‐ray transient class.

Detection of an orbital period in the supergiant high‐mass X‐ray binary IGR J16465‐4507 with Swift –BAT