Table 5: Parameters representing the best-fit model.
Parameter Value

CSPN

  
Model atmosphere  
$T_{\rm eff}$ 170 000 K
log g 7.3
Luminosity 490 $L_{\hbox{$_\odot$ }}$
Nebula  
Const. density $N_{H} = 1.840 \times 10^3~\rm cm^{-3}$
Abundance H He C N
  12.000
  O Ne Mg Si
  8.7076
  S Cl Ar K
  6.5441
  Ca Fe
  6.3600
Size $8\hbox{$.\!\!^{\prime\prime}$ }7$ (diameter)
Distance 2.300 kpc
Inner radius 4.365158e16 cm ( ${\sim}0.0141$ pc)
Outer radius 1.496725e17 cm ( ${\sim}0.0485$ pc)
Filling factor 1


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