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Table A.1

Relative positions of the two visual components from interferometric observations.

Date Angle Separation Reference
(Bess. yr.) (degrees) (arcsec)
1895.6750 77.40a 0.340 Hough (1899)
1895.7010 79.40a 0.300 Hough (1899)
1905.7010 149.9 0.280 van Biesbroeck (1918)
1906.6730 158.9 0.260 van Biesbroeck (1918)
1906.7530 162.3a 0.250 van Biesbroeck (1918)
1911.5110 282.6a 0.160 van Biesbroeck (1918)
1912.6570 346.5a 0.150 van Biesbroeck (1918)
1914.4900 22.80 0.200 van Biesbroeck (1927)
1917.5200 55.60 0.310 van Biesbroeck (1927)
1917.5680 55.10 0.300 van Biesbroeck (1927)
1917.6090 58.30 0.290 van Biesbroeck (1927)
1917.6200 60.50 0.270 van Biesbroeck (1927)
1917.6230 54.80 0.270 van Biesbroeck (1927)
1918.2820 63.20 0.300 van Biesbroeck (1927)
1918.4190 70.20 0.310 van Biesbroeck (1927)
1918.4680 67.10 0.320 van Biesbroeck (1927)
1918.5010 68.30 0.320 van Biesbroeck (1927)
1918.5400 65.60 0.340 van Biesbroeck (1927)
1918.6400 61.00 0.290 van Biesbroeck (1927)
1919.6300 67.00 0.260 van Biesbroeck (1927)
1920.3300 68.60 0.410 van Biesbroeck (1927)
1920.4120 75.20 0.360 van Biesbroeck (1927)
1920.5660 79.20 0.320 van Biesbroeck (1927)
1920.6230 80.40 0.380 van Biesbroeck (1927)
1921.5600 77.20 0.340 van Biesbroeck (1927)
1921.6500 88.00 0.310 van Biesbroeck (1927)
1923.2400 87.00 0.370 van Biesbroeck (1927)
1923.4980 92.20 0.400 van Biesbroeck (1927)
1923.5470 89.70 0.370 van Biesbroeck (1927)
1923.6620 93.00 0.370 van Biesbroeck (1927)
1924.5030 95.40 0.320 van Biesbroeck (1927)
1924.6420 96.60 0.290 van Biesbroeck (1927)
1924.6480 96.10 0.310 van Biesbroeck (1927)
1925.3780 99.60 0.340 van Biesbroeck (1927)
1925.4630 102.8 0.320 van Biesbroeck (1927)
1948.6810 84.10 0.360 Baize (1952)
1948.7220 86.50 0.350 Baize (1952)
1948.7280 86.30 0.370 Baize (1952)
1948.7310 85.10 0.360 Baize (1952)
1953.7630 129.2 0.310 Baize (1954)
1953.7750 118.5 0.290 Baize (1954)
1953.7770 119.0 0.310 Baize (1954)
1954.7900 123.7 0.300 Muller (1955)
1954.7900 121.1 0.280 Muller (1955)
1954.8200 123.0 0.250 Muller (1955)
1956.7750 146.1 0.240 Baize (1957)
1956.7770 144.5 0.280 Baize (1957)
1956.8040 146.0 0.240 Baize (1957)
1956.8070 145.4 0.220 Baize (1957)
1957.6090 157.6 0.270 van den Bos (1959)
1957.6200 155.4 0.280 van den Bos (1959)
1957.6280 161.6 0.260 van den Bos (1959)
1960.6880 213.6 0.180 Worley (1962)
1960.7050 215.7 0.180 Worley (1962)
1960.7570 218.9 0.180 Worley (1962)
1960.8030 214.0 0.160 Worley (1962)
1962.6720 282.5 0.130 van den Bos (1963)
1966.7190 36.60 0.300 Couteau (1967)
1966.7460 33.10 0.260 Couteau (1967)
1966.7560 32.80 0.250 Couteau (1967)
1969.6510 59.20 0.350 Couteau (1970)
1969.6700 64.00 0.330 Couteau (1970)
1969.6980 60.50 0.360 Couteau (1970)
1972.4700 79.10 0.340 van Biesbroeck (1974)
1972.5410 81.40 0.320 van Biesbroeck (1974)
1974.6000 92.50 0.350 Heintz (1975)
1974.6400 91.40 0.350 Holden (1975)
1975.5620 95.60 0.290 Holden (1976)
1978.6200 112.1 0.320 Heintz (1980)
1987.5400 252.2 0.120 Heintz (1990)
1988.5600 289.9 0.100 Heintz (1990)
1989.4800 334.2 0.130 Heintz (1990)
1990.5250 12.10 0.156 Couteau & Ling (1991)
1990.5290 12.80 0.189 Couteau & Ling (1991)
1992.5330 41.60 0.240 Couteau et al. (1993)
1992.5330 41.90 0.245 Couteau et al. (1993)
1992.5530 41.60 0.237 Couteau et al. (1993)
1997.7500 79.80 0.370 Heintz (1998)

Notes. (a) These values were corrected for a 180° ambiguity in the quadrant determination.

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