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Table 5
Dimensions of the nebula, derived for a distance of 1.9 kpc.
| Measured | Radius | Dynamic age | |
| diameter | |||
| [′′] | [×1017 cm] | [years] | |
|
|
|||
| Central wind cavity | 24 | 3.5 | |
| Main nebula | 76 | 10.8 | 12...17 × 103 |
| Shell | 144 | 20.5 | |
| First halo | 189 | 27. | |
| Second halo | 246 | 35. | |
Notes. The dynamical age agrees well with the 20 kyears derived as evolutionary age for the CSPN by Rauch et al. (1999).
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