Cl* NGC 2168 SB 496 , the SIMBAD biblio

UBVI CCD photometry has been obtained for the intermediate-age open cluster M35 (NGC 2168). From this new photometry we derived the cluster parameters (V₀ - M_V= 9.60±0.10 mag, E(B-V) = 0.255±0.024 mag), age (log t_age=8.3 ±0.3) and a photometric abundance (Z ~ 0.008, i.e. [Fe/H] ~ - 0.3) from comparison with theoretical isochrones of the Padova group. A minimum binary frequency (35±5 per cent) was estimated from the distribution of distance moduli of unevolved proper motion members. Faint photometric members were selected by using differences in the reddening effect on colour indices.