The built-in object catalog doesn't include every possible target in the vast night sky.

For these, use the Custom Celestial Objects feature: 

Just enter the target's Right Ascension (RA) and Declination (Dec), and Seestar will GoTo your coordinates.

Open the Seestar App, tap the "SkyAtlas" button in the bottom menu.

On the Star Map page, tap the "Objects" Library button in the top right corner. Scroll to the bottom of the catalog to find "My Favorites", then tap the "More" button to open the detail page.

Tap the "Customize" button in the top right corner, enter the coordinates of the object you wish to add, and tap Add to save it.

Once added, your custom objects can be viewed under "My Favorites" list. Swipe left to delete an object. Tap on an object to view its coordinates and altitude information.

Tips: 

Avoid giving your custom objects the exact same names as those in the built-in catalog. Duplicate names can confuse the GoTo system.