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Astrometry

Astrometry data file have to have the extension .psn. The following gives an example for Algol, where the columns give the hierarchical component designation, the Julian year of observation, separation (in mas) and position angle (in degrees from N over E), major and minor axis (in mas), and position angle of the major axis of the error ellipse (in degrees, from N over E).

AB-C 1991.7487 10.68   67.30   1.511  0.265  107.8
AB-C 1991.7545 15.70   83.18   0.589  0.091   86.8
AB-C 1991.8036 25.52  105.36   0.253  0.086   91.1
AB-C 1991.8336 33.11  111.73   0.186  0.061   92.6
AB-C 1992.6936 47.04  141.94   0.874  0.165   99.5
AB-C 1992.7756 19.16  160.03   0.283  0.090   95.6
AB-C 1992.7864 15.64  165.57   0.210  0.093  150.9
AB-C 1992.7921 14.27  174.39   0.714  0.133   87.8
AB-C 1992.8822 24.25  292.96   0.692  0.198   81.6
AB-C 1992.8930 28.01  295.10   0.956  0.208   92.9
AB-C 1992.9203 35.86  301.53   0.862  0.223   97.8
AB-C 1992.9450 43.11  305.27   1.106  0.237   91.1



Christian Hummel 2009-10-20