Summary: This technical note describes the application of an analytical model for the comparison of angular positions, proper motions and parallaxes generated by two Gaia sphere solutions.

Bibtex entry for this abstract:

@UNPUBLISHED{LL:BB-002,
author = {B.~Bucciarelli and U.~Abbas and A.~Vecchiato},
title={{C}omparison of two {G}aia sphere solutions using orthonormal bases on the sphere},
institution={Istituto Nazionale di Astrofisica, Italy},
year={2011},
month={May},
url={http://www.rssd.esa.int/doc_fetch.php?id=3082132},
note={GAIA-C3-TN-INAF-BB-002},
type={Technical note}
}