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Journal of Physics and Astronomy Research

Some aspects of the oldest nearby moving cluster (Ruprecht 147)

Waleed H Elsanhoury 

Accepted 16 November, 2014.

Citation: Elsanhoury WH (2014). Some Aspects of the Oldest Nearby Moving Cluster (Ruprecht 147).Journal of Physics and Astronomy Research, 1(3): 035-042.

Copyright: © 2014 Elsanhoury WH. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Based on the membership data retrieved from the Two Micron All Sky Survey (2MASS), we have computed some parameters of the moving open cluster Ruprecht 147, like, vertex, velocity, distance, distance modulus, and center of the cluster. All of these aspects were carried out using an algorithm due to Sharaf et al. (2000), into which error estimates of these parameters will be established in closed analytical forms (e.g. standard and probable errors of the vertex coordinates, angular distance, velocity of the cluster, parallaxes of member stars, and distance of the cluster).

Finally, we compared our results with other published values, which is in good agreement.

Key words: Ruprecht 147, characteristics, convergent point, error controlled method, cluster