**Table 1:** Fit results for faint and bright phase X-ray spectra of V1309 Ori.
Data	Model	$N_{\rm H}$	$kT_{\rm bb}$	kT₁	kT₂	kT₃	$\alpha$	$F_{\rm bol}$	$\chi^2_{\rm red}$
		(10²⁰ cm^-2)	(eV)	(eV)	(keV)	(keV)		$({\rm erg~cm}^{-2}~{\rm s}^{-1})$
Faint phase
pn	bb+br	5.1	$32\pm3$	-	$1.2\pm0.3$	-	-	$1.2\times10^{-12}$	1.4
pn	bb+mek	<0.01	$68\pm3$	-	$1.1\pm0.1$	-	-	$0.3\times10^{-12}$	1.8
pn	2mek	<0.01	-	$80\pm5$	$2.7\pm0.5$	-	-	$2.5\times10^{-12}$	1.7
pn	3mek	2.5	-	$65\pm2$	$0.7\pm0.2$	$2.9\pm 0.4$		$1.5\times 10^{-11}$	0.96
pn	cmekal	<0.01	-	-	-	$7.1\pm 0.4$	$0.7\pm0.2$	$4.3\times10^{-13}$	3.1
pn	bb+cmekal	1.4	$47\pm7$	-	-	$5.5\pm 0.7$	$1.0\pm0.2$	$7.2\times10^{-13}$	0.86

Bright phase
MOS1	bb+3mek	$8.1\pm0.3$	$42\pm4$	65 $^{\star}$	0.7 $^{\star}$	2.9 $^{\star}$	-	$18.9\times 10^{-11}$	0.87
MOS2	bb+3mek	$6.0\pm0.3$	$42\pm3$	65 $^{\star}$	0.7 $^{\star}$	2.9 $^{\star}$	-	$16.8\times 10^{-11}$	0.97
pn (outer psf)	bb+3mek	$5.0\pm0.2$	$46\pm2$	65 $^{\star}$	0.7 $^{\star}$	2.9 $^{\star}$	-	$7.48\times 10^{-11}$	0.86
pn ( CR<2 s^-1)	bb+3mek	$3.7\pm0.7$	$44\pm2$	65 $^{\star}$	0.7 $^{\star}$	2.9 $^{\star}$	-	$7.43\times 10^{-11}$	1.04