parallax: 0.02654 0.00048 m1: 1.93 0.26 C Positional observations C B [yr] theta rho rho_std 1889.1900 326.1 0.9100 0.1000 I1 1890.2600 320.1 0.8700 0.1000 I1 1890.5300 316.7 0.8100 0.1000 I1 1891.3000 316.8 0.8000 0.1000 I1 1892.1100 311.5 0.7800 0.1000 I1 1893.4900 308.9 1.0300 0.1000 I1 1895.2510 305.5 0.8500 0.1000 I1 1896.2990 301.4 0.8400 0.1000 I1 1897.8100 295.4 0.8400 0.1000 I1 1898.2490 293.6 0.8900 0.1000 I1 1898.3500 291.1 0.5400 0.1000 I1 1899.1780 276.8 0.6000 0.1000 I1 1899.3690 283.4 0.8400 0.1000 I1 1902.4400 273.0 0.5000 0.1000 I1 1903.3170 272.1 0.6000 0.1000 I1 1933.5100 322.7 0.8500 0.1000 I1 1935.1300 317.1 0.8500 0.1000 I1 1935.3300 315.4 0.8200 0.1000 I1 1936.3700 312.2 0.8600 0.1000 I1 1937.2700 309.2 0.7700 0.1000 I1 1937.2800 311.1 0.7600 0.1000 I1 1937.4200 315.2 0.8700 0.1000 I1 1938.4100 308.7 0.8500 0.1000 I1 1939.0000 303.7 0.8300 0.1000 I1 1939.2500 303.9 0.8000 0.1000 I1 1939.3200 303.0 0.7700 0.1000 I1 1940.3000 300.7 0.8000 0.1000 I1 1941.2000 299.8 0.8200 0.1000 I1 1942.4000 290.0 0.7300 0.1000 I1 1943.3600 284.0 0.7300 0.1000 I1 1944.2900 285.2 0.6600 0.1000 I1 1945.2900 278.0 0.6900 0.1000 I1 1945.4700 274.1 0.6300 0.1000 I1 1973.2300 343.8 0.9000 0.0500 I1 1976.1400 338.9 0.8700 0.0500 I1 1976.2900 335.0 0.7000 0.0500 I1 1977.2900 331.0 0.7800 0.0500 I1 1977.3324 330.0 0.8190 0.0500 I1 1978.2500 327.1 0.6100 0.0500 I1 1979.2800 327.5 0.6600 0.0500 I1 1979.9990 317.0 0.8000 0.0500 I1 1983.1500 312.8 0.6900 0.0500 I1 1985.0019 297.7 0.7890 0.0500 I1 1986.2480 293.0 0.8000 0.0500 I1 1986.4029 292.1 0.7870 0.0500 I1 1989.2368 279.8 0.7290 0.0500 I1 1990.0450 275.0 0.7000 0.0500 I1 1991.2500 269.6 0.6720 0.0500 I1 1991.3230 269.0 0.6730 0.0500 I1 1993.3324 261.0 0.5900 0.0500 I1 1995.9390 233.0 0.5650 0.0050 I1 1997.0730 226.2 0.4700 0.0050 I1 1998.4290 207.6 0.4270 0.0050 I1 1999.8879 185.7 0.3680 0.0050 I1 2004.2120 90.2 0.3670 0.0050 I1 2004.3960 88.6 0.3710 0.0050 I1 2005.2580 72.0 0.3880 0.0050 I1 2005.3810 70.4 0.3890 0.0050 I1 2005.3840 70.6 0.3880 0.0050 I1 2006.0428 65.5 0.4000 0.0050 I1 2006.2690 58.4 0.4290 0.0050 I1 2006.3090 57.2 0.4250 0.0050 I1 2007.2600 44.2 0.4610 0.0050 I1 2009.2060 26.8 0.5490 0.0050 I1 2009.3810 26.8 0.5650 0.0050 I1 2009.3840 25.9 0.5570 0.0050 I1 2010.2630 17.8 0.5860 0.0050 I1 2010.3230 17.2 0.5880 0.0050 I1 2010.3260 17.7 0.5970 0.0050 I1 2010.3830 17.7 0.5920 0.0050 I1 2011.1499 12.1 0.6180 0.0050 I1 2011.4090 10.3 0.6370 0.0050 I1 2012.3370 4.7 0.6680 0.0050 I1 2013.2850 0.1 0.6980 0.0050 I1 2014.3930 355.4 0.7140 0.0050 I1 2015.2800 350.1 0.7360 0.0050 I1 2015.3760 350.0 0.7490 0.0050 I1 2017.2570 342.4 0.8060 0.0050 I1 C Radial velocities used in this orbit C epoch Rad.Vel. O-C or error Weight Component C years (km/s) (km/s) (km/s) 1897.230 -9.800 0.540 -0.043 Va 1897.980 -9.600 0.540 0.085 Va 1899.960 -9.900 0.540 -0.421 Va 1901.290 -9.600 0.540 -0.274 Va 1903.990 -9.200 0.540 -0.229 Va 1905.790 -7.900 0.540 0.796 Va 1910.790 -8.800 0.540 -0.880 Va 1911.420 -7.100 0.540 0.794 Va 1917.100 -9.800 0.540 0.171 Va 1922.180 -10.200 0.540 0.567 Va 1927.700 -11.000 0.540 -0.313 Va 1933.530 -10.600 0.540 -0.229 Va 1934.260 -10.800 0.540 -0.477 Va 1934.860 -9.400 0.540 0.882 Va 1935.180 -9.600 0.540 0.660 Va 1936.290 -10.600 0.540 -0.420 Va 1936.910 -10.100 0.540 0.034 Va 1937.370 -10.800 0.540 -0.702 Va