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Table 4
Characteristics of the expanding ring.
| Parameter | Value |
|
|
|
| Spatial center | 16:59:26 −40:04:30 (J2000) |
| LSR velocity center | −12.4 km s-1 |
| Radius | 3.4 pc |
| Expansion velocity | 1.0 km s-1 |
| α | 57 deg |
| β | −175 deg |
| Mass | 6.9 × 103 M⊙ |
| Energy | 7 × 1046 erg |
| Expansion time | 3 × 106 yr |
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