Is there a way to increase the chance of finding Legendaries?

In Ultra Sun/Ultra Moon, is there a way to increase the chance of finding an Ultra Wormhole Legendary? Because I almost caught every single one (missing: Heatran, Giratina, and Rayquaza), and it’s been very hard for me to even find a Legendary.

Pleaselog inorregisterto add a comment.

The deeper into Ultra Space you ride the rarer the wormholes. They come in four rarities, pictured below:

The rate of encountering legendaries in a wormhole, in percentage, is written in the upper portion of this image (note that distance traveled is measured in lightyears, basically the deeper into Ultra Space you go):

So rarer wormholes yield a higher result of finding legendaries. You can find rarer wormholes by going deeper into Ultra Space, the probabilities of encountering each type of wormhole in how many “lightyears” you’ve traveled through goes as follows:

Sorry for all the images but hopefully this helped. I thought you may also want to know what color wormholes to find the legendaries you’re after:-Heatranis found inyellowwormholes in US only.-Giratinais found inyellowwormholes if Dialga (exclusive to US in green wormholes) and Palkia (exclusive to UM in yellow wormholes) are in your party.-Rayquazais found inredwormholes if Groudon (exclusive to US in yellow wormholes) and Kyogre (exclusive to UM in blue wormholes) are in your party.