Table 2: Results of fitting a circle to the outer edge of the light echo of V838 Mon. Time of observations, $t_{\rm obs}$ , is in days since 1 January 2002. Results are in arcsec.
$t_{\rm obs}$ $\theta$ $x_{\rm c}$ $y_{\rm c}$ $\theta _{\rm c}$

120.0 18.55 $\pm$ 0.62 -0.83 $\pm$ 0.90 0.46 $\pm$ 0.86 0.95 $\pm$ 0.88

140.0 20.89 $\pm$ 0.61 -1.12 $\pm$ 0.88 0.50 $\pm$ 0.84 1.23 $\pm$ 0.86

245.0 30.32 $\pm$ 0.83 -2.27 $\pm$ 1.21 0.37 $\pm$ 1.15 2.30 $\pm$ 1.18

301.0 33.68 $\pm$ 0.84 -2.36 $\pm$ 1.23 1.11 $\pm$ 1.17 2.60 $\pm$ 1.20

351.0 36.66 $\pm$ 0.90 -2.61 $\pm$ 1.31 1.58 $\pm$ 1.23 3.05 $\pm$ 1.27

659.0 52.10 $\pm$ 1.15 -6.05 $\pm$ 1.65 3.12 $\pm$ 1.61 6.80 $\pm$ 1.63

769.0 56.67 $\pm$ 1.19 -5.91 $\pm$ 1.66 5.37 $\pm$ 1.71 7.99 $\pm$ 1.69

**Table 2:** Results of fitting a circle to the outer edge of the light echo of V838 Mon. Time of observations, $t_{\rm obs}$ , is in days since 1 January 2002. Results are in arcsec.
$t_{\rm obs}$	$\theta$	$x_{\rm c}$	$y_{\rm c}$	$\theta _{\rm c}$
120.0	18.55 $\pm$ 0.62	-0.83 $\pm$ 0.90	0.46 $\pm$ 0.86	0.95 $\pm$ 0.88
140.0	20.89 $\pm$ 0.61	-1.12 $\pm$ 0.88	0.50 $\pm$ 0.84	1.23 $\pm$ 0.86
245.0	30.32 $\pm$ 0.83	-2.27 $\pm$ 1.21	0.37 $\pm$ 1.15	2.30 $\pm$ 1.18
301.0	33.68 $\pm$ 0.84	-2.36 $\pm$ 1.23	1.11 $\pm$ 1.17	2.60 $\pm$ 1.20
351.0	36.66 $\pm$ 0.90	-2.61 $\pm$ 1.31	1.58 $\pm$ 1.23	3.05 $\pm$ 1.27
659.0	52.10 $\pm$ 1.15	-6.05 $\pm$ 1.65	3.12 $\pm$ 1.61	6.80 $\pm$ 1.63
769.0	56.67 $\pm$ 1.19	-5.91 $\pm$ 1.66	5.37 $\pm$ 1.71	7.99 $\pm$ 1.69

Source LaTeX | All tables | In the text

	1 Introduction
	2 The analysis of the photometric data
	3 Circumstellar and interstellar environment
	4 Discussion and summary
	References