The extended UWP used by Traveller Map and generated with T5 is, in sector listings that carry the "Official" label, considered official with the caveat that much of the map has not seen development aside from the UWP listings. Needs and details do sometimes change as a result. The gas giants, belts, and additional worlds numbers are going to be pretty stable. Systems that go beyond that, published or not, are pretty rare. If you find those details on a wiki world page it is usually because a published adventure presented that data. There are some systems that have that data because of someone's campaign, and the wiki encourages people to say as much.
I've used the TravellerWorlds maps as springboards, but the algorithm is a bit staid about some things like tidal locking, so I will come up with reasons why a tidal lock isn't in force.
Ultimately, the Traveller Map information, and any Canon designation, is for writers of more Canon. Referees can and should modify what they need for their table.