Analysis of the [ITAL]Hipparcos[/ITAL] Measurements of υ Andromedae: A Mass Estimate of Its Outermost Known Planetary Companion
Open Access
- 10 September 1999
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 522 (2), L149-L151
- https://doi.org/10.1086/312231
Abstract
We present an analysis of Hipparcos astrometric measurements of υ Andromedae, a nearby main-sequence star around which three planet candidates have recently been discovered by means of radial velocity measurements. The stellar orbit associated with the outermost candidate has a period of 1269 ± 9 days and a minimum semimajor axis of 0.6 mas. Using the Hipparcos data together with the spectroscopic elements, we found a semimajor axis of 1.4 ± 0.6 mas. This implies a mass of 10.1 Jupiter masses for that planet of υ And.Keywords
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