It's 39 light years so no fewer than 39 years from our perspective. The closer to the speed of light the travelers are the less time will appear to have elapsed

It's 39 light years so no fewer than 39 years from our perspective. The closer to the speed of light the travelers are the less time will appear to have elapsed from their perspective. If you had rockets that could instantaneously accelerate to infinitessimally close to the speed of light, no time at all would appear to have elapsed from the travelers perspective (or no time that they would notice), but this is very unlikely.