Kinematic Distances Information
Kinematic Distance (kpc): 18
Allowed Range (kpc): 16 to 19
  Only one kinematic distance solution found for this radial velocity
Inferred Shell Size
  Shell Diameter (pc): 440
  Allowed Range (pc): 390 to 460
Distance Notes:
Inferred shell size plausible in context of extent of Galactic Plane
Expansion Velocity Information
Velocity of Front Wall Vf (km/s): -80
Velocity of Back Wall Vb (km/s): -57
Expansion Velocity (km/s): 12
Back wall estimate may be possibly
unrelated gas, or suffer from data quality issues.
Minimum 'Shell-like' velocity V1 (km/s): -77
Maximum 'Shell-like' velocity V2 (km/s): -62
Lower Limit on Vexp (km/s): 9
(from Vf and V2)