== Plots and Data ==

=== NRAO ===

[[https://science.nrao.edu/science/service-observing|Analysis of public VLA observations]]

=== SWIFT ===

[[http://swift-sgra.com/ | Analysis of Swift data]]

=== Orbital Elements ===

||<rowstyle="background-color: #E0E0FF;">  Parameter || [[http://adsabs.harvard.edu/abs/2012Natur.481...51G|Gillessen et al. 2012a]] || [[http://adsabs.harvard.edu/abs/2013ApJ...763...78G|Gillessen et al. 2013a]] || [[ http://adsabs.harvard.edu/abs/2013arXiv1304.5280P | Phifer et al. 2013]] || [[http://adsabs.harvard.edu/abs/2013ApJ...774...44G | Gillessen at al. 2013b]] ||
||semi major axis (mas)||	521 ± 28	||666 ± 39|| 880 || 1048 ± 247||
||eccentricity||	0.9384 ± 0.0066	||0.9664 ± 0.0026|| 0.9814 ± 0.0060 || 0.9762 ± 0.0074 ||
||inclination [°]||	106.55 ± 0.88||	109.48 ± 0.81|| 121 ± 3 || 118.1 ± 2.0 ||
||position angle of ascending node [°]||	101.5 ± 1.1||	95.8 ± 1.1|| 56 ± 11 || 81.9 ± 4.3 ||
||longitude of periastron [°]||	109.59 ± 0.78||	108.50 ± 0.74|| 88 ± 6|| 97.2 ± 2.2 ||
||epoch of periastron [yr]||	2013.51 ± 0.04||	2013.69 ± 0.04|| 2014.21 ± 0.14 || 2014.25 ± 0.06 ||
||orbital period [yr]||	137 ± 11	||198 ± 18|| 276 ± 111 || 391 ± 66 ||


=== Astrometry & Radial Velocities ===

==== VLT/NACO-based L-band positions ====

||<rowstyle="background-color: #E0E0FF;"> Epoch [Julian year] || R.A. ["] || Dec ["] || error estimate ["] ||
||2002.6  || 0.2771  ||  -0.155712    ||   0.002 ||
||2003.4  || 0.276067   ||   -0.140544   ||    0.002 ||
||2004.6  || 0.263562    ||   -0.130565   ||    0.002 ||
||2005.4  || 0.264142   ||   -0.123733    ||   0.002 ||
||2006.4  || 0.240084    ||  -0.109394    ||   0.002 ||
||2007.3  || 0.225361    ||   -0.102138   ||    0.002 ||
||2008.5  || 0.209801    ||  -0.0879578   ||   0.002 ||
||2009.25 || 0.193148    ||   -0.0740471  ||    0.002 ||
||2010.5  || 0.158347    ||   -0.0540539  ||    0.002 ||
||2011.3  || 0.139725    ||  -0.0393364   ||   0.002 ||
||2011.5  || 0.134431    ||   -0.0376276  ||    0.002 ||
||2012.2  || 0.113924    ||   -0.0374186  ||    0.005 ||
||2012.2126  ||     0.122807    ||  -0.0228154  ||    0.005 ||
||2012.4942  ||     0.10694 ||  -0.0138847   ||   0.005 ||

==== VLT/SINFONI-based Br-gamma positions ====

||<rowstyle="background-color: #E0E0FF;"> Epoch [Julian year] || R.A. ["] || error R.A. ["] || Dec ["] || error Dec ["] ||
||2004.5356 ||0.264754 ||0.00247242 ||-0.145519 ||0.00264724 ||
||2005.2153 ||0.233448 ||0.00478122 ||-0.135809 ||0.00337244 ||
||2006.2040 ||0.243039 ||0.00489195 ||-0.123933 ||0.00441347 ||
||2008.2624 ||0.204608 ||0.00349524 ||-0.0849295 ||0.00335883 ||
||2009.3851 ||0.212171 ||0.00338314 ||-0.0812734 ||0.00265295 ||
||2010.3539 ||0.160914 ||0.00352225 ||-0.0510249 ||0.00361687 ||
||2011.3169 ||0.146314 ||0.00268501 ||-0.0381918 ||0.00266301 ||
||2011.5665 ||0.147089 ||0.00779815 ||-0.0275061 ||0.00633855 ||
||2012.2126 ||0.132222 ||0.00289233 ||-0.0201099 ||0.003077 ||
||2012.4942 ||0.122072 ||0.00158594 ||-0.0223565 ||0.00294338 ||
||2013.2650 ||0.0846412 ||0.0015125 ||0.00105052 ||0.0016 ||


==== VLT/SINFONI-based Br-gamma velocities ====

||<rowstyle="background-color: #E0E0FF;"> Epoch [Julian year] || vLSR [km/s] || error estimate [km/s] ||
||2003.2711||       990 ||   50||
||2004.5356||       1052||   30||
||2005.2153||       1010||   50||
||2008.2624||       1256||   20||
||2009.3851||       1404||  30||
||2010.3539||       1522||  25||
||2011.3169||       1692||  60||
||2011.5665||       1640||  60||
||2012.2126||       1934||  50||
||2012.3612||       1930||  50||
||2012.4942||       2030||  50||
||2012.7036||       2046||  50||
||2013.2650||	    2180||  50||