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Table 6
Compilation of astrometric measurements for the EK Dra system.
| Relative positions of EK Dra B − EK Dra A | ||||
| Epoch | Instrument | Δα (mas) | Δδ (mas) | Reference |
|
|
||||
| 1991.2135 | 1D | +0.030 ± 0.020 | −0.280 ± 0.015 | (1) |
| 1992.1232 | 1D | +0.045 ± 0.022 | −0.310 ± 0.015 | (1) |
| 1993.7611 | MAGIC | +0.050 ± 0.010 | −0.453 ± 0.015 | (1) |
| 1994.0712 | MAGIC | +0.051 ± 0.004 | −0.483 ± 0.010 | (1) |
| 1994.9501 | MAGIC | +0.040 ± 0.004 | −0.499 ± 0.005 | (1) |
| 1997.8926 | MAGIC | +0.059 ± 0.008 | −0.644 ± 0.012 | (1) |
| 2001.1123 | OMEGA Cass | +0.085 ± 0.007 | −0.674 ± 0.005 | (1) |
| 2001.8406 | OMEGA Cass | +0.074 ± 0.013 | −0.705 ± 0.012 | (1) |
| 2002.8049 | OMEGA Cass | +0.102 ± 0.012 | −0.718 ± 0.009 | (1) |
| 2013.4820 | AstraLux | +0.081 ± 0.008 | −0.773 ± 0.008 | (2) |
Notes. (1) König et al. (2005) using the 3.5 m telescope on Calar Alto; (2) this work.
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