3 ms·

At 1g constant acceleration, including deceleration, it's only 9 years. A flyby is only 5 years [1] [1] https://www.omnicalculator.com/physics/space-travel htt

• goombacloud 4y ago
  That's the time passing in the vessel, not bad but still it means that such a mission would have to be completely self-sufficient and not rely on anything on/from Earth…
• fluoridation 4y ago
  Where would you get the energy to accelerate constantly for nine years?