Abstract:
We present a CCD UBVI photometric study of poorly studied intermediate-age open cluster SAI 35 (Juchert 20) for
the first time. To accomplish this study, we also used LAMOST DR5, Two Micron All Sky Survey, and
Gaia EDR3 databases. We identified 214 most probable cluster members with membership probability higher than
50%. The mean proper motion of the cluster is found as μα cosδ = 1.10 ± 0.01 and μδ = −1.66 ± 0.01 mas yr^−1.
We find the normal interstellar extinction law using the various two-color diagrams. The age, distance, reddening,
and radial velocity of the cluster are estimated to be 360 ± 40 Myr, 2.9 ± 0.15 kpc, 0.72 ± 0.05 mag, and
−91.62 ± 6.39 km/s, respectively. The overall mass function slope for main-sequence stars is found to be
1.49 ± 0.16 within the mass range 1.1–3.1Msun, which is in agreement with Salpeter’s value within uncertainty. The
present study demonstrates that SAI 35 is dynamically relaxed. Galactic orbital parameters are determined using
Galactic potential models. We found that this object follows a circular path around the Galactic center.
