That would mean that its gravity would be so strong it would pull on everything on earth and earth itself toward it with such force that the earth would form a giant circle around the traveler since earth isnt in a locked orbit. Also other celestial bodies would bombard the traveler 24/7 since its gravity combined with earths would atract everything in the immediate vicinity. It would definitely mess with the orbits of all the planets and moons in the solar system too(maybe thats why mars is so close to the moon). But space magic I guess.