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We propose a kinematic approach to searching for the stars that could beformed with the Sun in a common "parent" open cluster. The approach consists inpreselecting suitable candidates by the closeness of their space velocities tothe solar velocity and analyzing the parameters of their encounters with thesolar orbit in the past in a time interval comparable to the lifetime of stars.We consider stars from the Hipparcos catalog with available radial velocities.The Galactic orbits of stars have been constructed in the Allen--Santillanpotential by taking into account the perturbations from the spiral densitywave. We show that two stars, HIP 87382 and HIP 47399, are of considerableinterest in our problem. Their orbits oscillate near the solar orbit with anamplitude of about 250 pc; there are short-term close encounters to distances<10 pc. Both stars have an evolutionary status and metallicity similar to thesolar ones.

Searching for Possible Siblings of the Sun from a Common Cluster based on Stellar Space Velocities