All Tables

Table 1: Overview of all observations of Gliese 22 AC used for the visual orbit determination in this paper. Except for the first two data points all observations have been carried out at the 3.5-m telescope on Calar Alto.
Table 2: New observations of the wide pair Gliese 22 AB obtained at the 3.5-m telescope on Calar Alto.
Table 3: Our observations of $\alpha$ Psc that employ an astrometric calibration derived from images of the Trapezium cluster core, compared to the prediction of the ephemerides from Scardia (1983). The mean residuals were used as a correction for the ephemerides. In this way the measurements of Gliese 22 before 1995 were put into a consistent system of pixel scale and detector orientation.
Table 4: The orbits for Gliese 22 AC.
Table 5: Ephemerides for Gliese 22 AC.
Table 6: (O-C) residuals for our visual orbit for Gliese 22 AC and the most recent astrometric orbit for this system presented by Söderhjelm (1999). $\theta$ is given in degrees and $\rho$ in arcseconds.
Table 7: Masses for Gliese 22 A and C derived from their K magnitudes (Eq. (1)) using the theoretical evolutionary models from Baraffe et al. (1998, 2002).