5 Conclusions

We have presented the first multicolor CCD study of the two poorly known northern open clusters NGC 133 and NGC 1348. In the case of NGC 1348, no investigation had been carried out insofar.

Our analysis shows that these objects are two poorly populated, highly contaminated clusters. In details, we find that:

• NGC 133 is a 10-15 stars group located about 600 pc from the Sun. We estimate a reddening $E(B-V)=0.60\pm0.10$and a probable age of less than 10 Myrs;
• NGC 1348 is a 20 stars group with a mean reddening $E(B-V)=0.85\pm0.15$, a distance of almost 2 kpc, and an age greater than 50 Myrs.

The results of this study are hampered by the strong field star contamination. Much better constrains on the nature and basic parameters of these clusters can be obtained by enlarging the number of stars with proper motions measurements, and by obtaining radial velocity and spectral classification of the brightest stars.

Acknowledgements

I deeply thank Dr. Saulius Raudeliunas for providing me with a copy of V. Jasevicius papers. The kind night assistance at Asiago Observatory by Gigi Lessio and Silvano Desidera is warmly acknowledged. It is a real pleasure to thank Leo Girardi for his permission to use the TRILEGAL code in advance of publication. This study made use of Simbad and WEBDA catalogs.