Table 6: Interpretation of Figs. 8 and 9; for explanations see Sects. 7.2 and 8.
Possible primary spectral types for solution Group a-d Group e-h

From mass-temperature relation (Fig. 8) upper limit G5 region G0-K0, or upper limit M2

From mass-radius relation (Fig. 9) upper limit G5 upper limit M0

Combined constraints upper limit G5 upper limit M2

Consistency with spectroscopy ( $\rm K7\pm2$ ) fully consistent marginally consistent at most

Resulting secondary mass [ $M_{\hbox{$\odot$ }}$ ] upper limit 0.11 upper limit 0.076

Resulting secondary mass [ $M_{\hbox{$\odot$ }}$ ] for K7 $0.062\pm0.01$ $0.105\pm0.01$

**Table 6:** Interpretation of Figs. 8 and 9; for explanations see Sects. 7.2 and 8.
Possible primary spectral types for solution	Group a-d	Group e-h
From mass-temperature relation (Fig. 8)	upper limit G5	region G0-K0, or upper limit M2
From mass-radius relation (Fig. 9)	upper limit G5	upper limit M0
Combined constraints	upper limit G5	upper limit M2
Consistency with spectroscopy ( $\rm K7\pm2$ )	fully consistent	marginally consistent at most
Resulting secondary mass [ $M_{\hbox{$\odot$ }}$ ]	upper limit 0.11	upper limit 0.076
Resulting secondary mass [ $M_{\hbox{$\odot$ }}$ ] for K7	$0.062\pm0.01$	$0.105\pm0.01$

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