Abstract

An attempt has been made to derive the mass of Jupiter from modern observations of the minor planet 10 Hygiea. The calculations have been made using computer programmes prepared at the Institute for Theoretical Astronomy. From 250 observations 1932 to 1967 we obtained the reciprocal mass 1047.345±0.040 (rms error). After excluding some less reliable observations and allowing for the elliptic aberration terms we obtained 1047.326±0.033. By means of a more sophisticated computer programme and utilizing 100 additional observations, some of them made in 1969, we obtained the value 1047.324±0.023. Our results are compared with recent determinations by other investigators.

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