See the Addons Manual for how to make a binary planet script.
Since data sources use values of Epoch that are very distant in time for many asteroids, their calculated position in sky relative to recent calculated ephemerids may vary from slightly off to completely wrong. This is expected for the algorithm used by SE at the moment, and not really important for a casual trip through the Solar System. By using a recent calculated Mean Anomaly (I took as reference JPL Small Body Database) we solve this small inconvenience.
Others - No catalog number
Updated catalog for SE 0980/0974 RC2+ of binary/multiple asteroids is available here as attachment, containing all asteroids listed above, to be placed in SE data/catalogs/planets folder.
In Catalogs0974.pak, some of those objects are listed as single asteroids, or by other designations. The script Asteroids-Rem.sc, placed in data/catalogs/planets, will remove the duplicates.