The Hawk Creek Radio Observatory is the facility responsible for the discovery and naming of both Alpha and Beta. It is a SETI (Search for Extra-Terrestrial Intelligence) facility funded by the Bertran Corporation. On September 16, 2038, two scientists named Trent and Gary picked up a radio signal coming from Mars, directed at the Plains of Nazca in Peru. Shortly thereafter, a second signal originating from Nazca and directed towards Mars was heard.("Eve Ate the Apple")
Possibly simply following protocol, the scientists named Alpha and Beta in their order of discovery.
Presumably, the other 5 objects were discovered at this observatory.