A constellation is just a pattern of stars in the sky as we see them. Stars in constellations tend to be varying distances away from each other, and have no real connection. For us, they just happen to look close together, when in fact they can be huge distances from each other. A star that appears to be beside another in the sky, could be much nearer to a star that looks further away from it from our perspective.
The brightest star in Phoenix, as we see it, is about 78 light years away. The next brightest looking one is about 130 light years away. The next brightest looking is about 910 light years away, but the next brightest looking is only about 220 light years away. There is about 5,869,713,600,000 miles in a light year or about 9,445,950,434,502 kilometres.