Table A.5.
Positions of θ1 Ori C2, in position angle (PA) and separation (Sep) with respect to the primary star.
| Date | MJD | PA (deg) | Δ PA (deg) | Sep (mas) | Δ Sep (mas) | Reference |
|---|---|---|---|---|---|---|
| 1997.784 | 50735.106 | 226 | 3 | 33 | 2 | (1) |
| 1998.383 | 50953.891 | 222 | 5 | 37 | 4 | (1) |
| 1999.737 | 51448.439 | 214 | 2 | 43 | 1 | (2) |
| 1999.819 | 51478.353 | 213.5 | 2 | 42 | 1 | (3) |
| 2000.873 | 51863.509 | 210 | 2 | 40 | 1 | (3) |
| 2001.184 | 51976.956 | 208 | 2 | 38 | 1 | (2) |
| 2003.8 | 52932.450 | 19.3 | 2 | 29 | 2 | (3) |
| 2003.925 | 52978.252 | 19 | 2 | 29 | 2 | (3) |
| 2003.928 | 52979.202 | 19.1 | 2 | 29 | 2 | (3) |
| 2004.822 | 53305.589 | 10.5 | 4 | 24 | 4 | (3) |
| 2005.921 | 53706.981 | 342.74 | 2 | 13.55 | 0.5 | (3) |
| 2006.149 | 53790.276 | 332.3 | 3.5 | 11.8 | 1.11 | (4) |
| 2007.019 | 54108.263 | 274.9 | 1 | 11.04 | 0.5 | (5) |
| 2007.143 | 54153.298 | 268.1 | 5.2 | 11.94 | 0.31 | (4) |
| 2007.151 | 54156.293 | 272.9 | 8.8 | 12.13 | 1.58 | (4) |
| 2007.175 | 54165.278 | 266.6 | 2.1 | 12.17 | 0.37 | (4) |
| 2007.206 | 54176.309 | 265.6 | 1.9 | 12.28 | 0.41 | (4) |
| 2007.214 | 54179.304 | 263 | 2.3 | 12.14 | 0.43 | (4) |
| 2007.901 | 54430.486 | 238 | 2 | 19.8 | 2 | (5) |
| 2007.923 | 54438.485 | 241.2 | 1 | 19.07 | 0.5 | (5) |
| 2008.027 | 54476.508 | 237 | 3 | 19.7 | 3 | (5) |
| 2008.027 | 54476.508 | 236.5 | 3 | 19.6 | 3 | (5) |
| 2008.071 | 54492.506 | 236.2 | 2 | 20.1 | 2 | (5) |
| 2008.148 | 54520.520 | 234.6 | 1 | 21.17 | 0.5 | (5) |
| 2008.173 | 54529.542 | 236.4 | 1 | 21.27 | 0.5 | (5) |
| 2010.762 | 55475.321 | 216.3 | 2 | 42.6 | 1 | (6) |
| 2010.986 | 55557.137 | 215.7 | 2 | 43.4 | 1 | (6) |
| 2010.989 | 55558.232 | 215 | 2 | 43.1 | 1 | (6) |
Notes. The first column lists the observation time and the second column the MJD of the observation. The corresponding uncertainties are denoted as ΔPA and ΔSep Positions are taken from indicated references: (1) Weigelt et al. (1999), (2) Schertl et al. (2003), (3) Kraus et al. (2007), (4) Patience et al. (2008), (5) Kraus et al. (2009), (6) Grellmann et al. (2013).
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