on the sky, very close to the centre of the Collinder359 open cluster. Recently [@zejda] presented the first new catalog of known variable stars in open cluster regions. They have proposed that V2653Oph is a probable member of the Collinder359. However, its membership to the Collinder359 is still uncertain. The systemic velocity of the V2653Oph, -8.4 [kms$^{-1}$]{}, is consistent with the measured cluster systemic velocities of @plasket, @nord and @gon. Interstellar reddenings for the stars in the cluster were estimated as of 0.16mag obtained by @kha and 0.191mag @zejda. The distance of the Collinder359 is still uncertain. Distance determination is in general based on isochrone fitting of early type stars. For Collinder359 listed 13 cluster members by [@col] and estimated a distance to the cluster ranging from 210pc to 290pc. Later, [@ruc] made UBVRI photometry and obtained a distance to the cluster about 436pc, rejecting half of the original members. Trigonometric parallaxes of five photometric members were measured by $Hipparcos$ satellite which yielded distances between 260pc and 280pc for Collinder359. The systemic velocity, interstellar reddening and distance of V2653Oph are in good agreement with those derived for the cluster. It seems highly probable that V2653Oph does belong to Collinder359.

The 