Betazed Betazed was a planet and the homeworld of the Betazoid s , a warp - capable humanoid civilization . It was an important member of the United Federation of Planets . Location . On its way to Kaelon II in late 2367 , the " Enterprise - D " passed fairly close to Betazed , enabling Lwaxana Troi to visit the ship . ( ) In 2371 , the location of Betazed was labeled in the star chart Data and Picard were studying in stellar cartography aboard the . ( , " display graphic " ) Deep Space 9 was quite far from Betazed , although a transport from the station often left for the planet . ( ) History . In 23rd century , con man Harry Mudd robbed a bank on Betazed . Using a Time crystal , Mudd was able to learn everything about the bank ' s security measures . ( ) In 2364 , Counselor Deanna Troi took a shuttle from Starbase G - 6 to Betazed . ( ) The Betazed Federation ambassador during the 2360s and ' 70s was Lwaxana Troi , daughter of the Fifth House , holder of the Sacred Chalice of Rixx , heir to the Holy Rings of Betazed . ( , ) Betazed took part at the Pacifica conference in 2365 and hosted the biennial Trade Agreements Conference in the following year . ( ) Vash was unwelcome ( " persona non grata " in Q ' s words ) on Betazed . ( ) During the Dominion War in 2374 , Betazed was invaded by the Dominion from the Kalandra sector . The Federation Tenth Fleet had been assigned to defend Betazed and its outlying colonies , but was caught out of position on a training exercise . The obsolete and undermanned planetary defense system was overwhelmed , and the planet fell in under ten hour s . With Betazed captured , other nearby worlds , including , Tellar , Alpha Centauri , and Andor , were at risk of Dominion attack . ( ) Near the end of 2374 , the Second Fleet struck the Dominion forces occupying Betazed three times in a single month . However , each time the Dominion sent reinforcements and fortified their surface positions . ( ) Betazed was eventually freed from Dominion control by at least 2375 . ( , ) In 2379 , Riker and Troi planned to have a wedding ceremony on this planet . ( ) Environment . Betazed was consistently described as a lush , beautiful world . The planet ' s climate varied from dense jungle s to wide canyons and cliffs . Many of the major continents were dotted with lake s . Appendices . Background information . According to the script for " Q - Less " , the pronunciation for Betazed was " BAY - tuh - zed " . The original non - remastered planet model for Betazed was first used for Mintaka III in . It was later used for Barkon IV in . The scenes on Betazed in " Ménage à Troi " were originally written with studio filming in mind as their shooting locale , because the notion of using filming locations was at first prohibited for the episode . When more money became available , however , this plan was revised , with a day of location shooting planned instead . ( " Starburst " , Special # 29 , p . 57 ) The footage was ultimately filmed at the Huntington Library Botanical Gardens in Pasadena , California , where had also been filmed , two and half years earlier . ( " " ) According to " " ( p . 33 ) , Betazed was the fifth planet in the Betazed ( Beta Zeta ) system . The official name of the government was the Fifth House of Betazed , which governed this planet from the capital city of . Betazed was admitted into the in 2273 . As reported in the census of 2370 , the planet was populated with 1 . 3 billion Betazoid s living there . Betazoids had been warp - capable since antiquity . Major attractions on this world included Lake Cataria , Janaran Falls , and the University of Betazed . The system was named by the 21st century Human John Burke , chief astronomer of the Royal Academy . According to " Star Trek : Star Charts " ( pp . 36 & 48 ) and " " ( " Federation Historical Highlights , 2161 - 2385 " ) , the Betazed ( Beta Zeta ) system was located in the Alpha Quadrant . The primary was a . In October 2374 , the Dominion won the Battle of Betazed and claimed the system . ( " Stellar Cartography : The Starfleet Reference Library " ( " Stellar Cartography " p . 41 ; " The Dominion War : Strategy and Battles , 2373 - 75 " ) placed this event in September 2375 . ) According to " The Worlds of the Federation " , Betazed was the fifth planet in the Beta Veldonna system . Its natives call it Cyndriel . According to the " " , Betazed is the second planet in the Beta system . According to " Planets of the UFP " , Betazed is the second planet in the Betazed system . Its capital city is Medara . According to the " Worlds " sourcebook , Betazed is the third planet in its system . The classified Betazed as a class M planet .