| Qu | Page | Class | Coor | T | C | Ma | Entry | Episode |
| a | III | W,Y | b | B | +3 | Avenal VII. | Tacking into the Wind. [DS9] | |
| a | III | V,X | b | G | +7 | Sarpedion V. | Tacking into the Wind. [DS9] | |
| a | III | DOB | W,Y | s | M | +7 | Tevak shipyard. | Tacking into the Wind. [DS9] |
| d | 84 | I,B | b | F | +9 | Sky Spirits. | Tattoo. [VGR] | |
| a | III | DOB | Y,X | s | G | +5 | Chin'toka System. | Tears of the Prophets. [DS9] |
| a | I m | UFP | Terra Novans. (Eta Cassiopeiae) | Terra Nova. [ENT] | ||||
| a | III | UFP | Z,Z | b | G | +5 | Terra Novans. (Eta Cassiopeiae) | Terra Nova. [ENT] |
| a | 32 | WAC | Terra Novans. (Eta Cassiopeiae) | Terra Nova. [ENT] | ||||
| a | II k | UFP | a,p | s | G | +1 | Cepheus. (Beta Cephei) | Terratin Incident, The. [TAS] |
| a | II k | UFP | a,p | s | G | +1 | Terratin. (Beta Cephei) | Terratin Incident, The. [TAS] |
| a | I m | UFP | Verdanis. (Beta Cephei) | Terratin Incident, The. [TAS] | ||||
| a | II k | UFP | a,p | s | G | +1 | Verdanis. (Beta Cephei) | Terratin Incident, The. [TAS] |
| d | 85 | F,M | s | A | +9 | Kohl settlement. | Thaw, The. [VGR] | |
| I m | UFP | Taranko colony. | Thine Own Self. [TNG] | |||||
| d | 91 | B,Q | s | K | +3 | Hazari. | Think Tank. [VGR] | |
| d | 91 | D,P | b | G | +5 | Rivos V. | Think Tank. [VGR] | |
| d | 91 | OOS | D,P | Think Tank. | Think Tank. [VGR] | |||
| d | 90 | POR | H,I | Moneans. | Thirty Days. [VGR] | |||
| d | 83 | C,V | s | G | +5 | Briori. | 37's, The. [VGR] | |
| a | I m | UFP | Berengaria VII. | This Side of Paradise. [TOS] | ||||
| a | I | UFP | W,D | b | M | +1 | Berengaria VII. | This Side of Paradise. [TOS] |
| a | I m | UFP | Omicron Ceti III. MIRA | This Side of Paradise. [TOS] | ||||
| a | II k | UFP | a,m | s | M | -1 | Omicron Ceti III. MIRA | This Side of Paradise. [TOS] |
| a | 37 | UFP | X,P | s | M | +3 | Omicron Ceti III. MIRA | This Side of Paradise. [TOS] |
| a | II k | CAP | a,m | s | B | -5 | Tholians. | Tholian Web, The. [TOS] |
| a | 35 | WAC | Tholians. | Tholian Web, The. [TOS] | ||||
| a | 37 | CAP | R,U | s | B | -7 | Tholians. | Tholian Web, The. [TOS] |
| d | 82 | F,E | s | F | +5 | Trabalian freighter. | Threshold. [VGR] | |
| b | II | DOB | F,Z | s | M | -3 | Chaltok IV. | Time and Again. [VGR] |
| d | 82 | G,K | b | F | +9 | Kalto province. | Time and Again. [VGR] | |
| d | 82 | G,K | b | F | +9 | Markov. | Time and Again. [VGR] | |
| b | 64 | SLR | B,P | Bonaventure, S.S." | Time Trap, The. [TAS] | |||
| b | 64 | SPH | B,O | Delta Triangle. | Time Trap, The. [TAS] | |||
| I m | UFP | Dalvos Prime. | Time's Orphan. [DS9] | |||||
| d | 90 | I,F | s | M | +9 | FGC-521443 | Timeless. [VGR] | |
| d | 90 | I,G | b | F | +3 | Takara sector. Fact Files 100.25I TEKARA | Timeless. [VGR] | |
| b | II k | b,n | s | M | +5 | Beta Stromgren. | Tin Man. [TNG] | |
| b | IV | STB | H,Z | starbase. Starbase 123. | Tin Man. [TNG] | |||
| b | II k | STB | b,n | starbase. Starbase 152. | Tin Man. [TNG] | |||
| b | 65 | STB | L,X | starbase. Starbase 152. | Tin Man. [TNG] | |||
| d | 92 | SPH | J,D | CLASS-T NEBULA | Tinker, Tenor, Doctor, Spy. [VGR] | |||
| d | 92 | 1ST | I,C | Hierarchy. | Tinker, Tenor, Doctor, Spy. [VGR] | |||
| a | III | DOB | W,Z | s | K | +5 | Free Haven. | To the Death. [DS9] |
| c | 74 | V,D | s | M | +7 | Vandros IV. | To the Death. [DS9] | |
| c | 71 | WAC | Vandros IV. | To the Death. [DS9] | ||||
| b | I m | UFP | Alpha Centauri. (Proxima) | Tomorrow Is Yesterday. [TOS] | ||||
| b | I | UFP | A,A | t | G | +5 | Alpha Centauri. (Proxima) | Tomorrow Is Yesterday. [TOS] |
| a | I m | UFP | Cygnet XIV. | Tomorrow Is Yesterday. [TOS] | ||||
| a | III | UFP | Z,U | s | K | +3 | Cygnet XIV. | Tomorrow Is Yesterday. [TOS] |
| a | 32 | WAC | moon. | Tomorrow Is Yesterday. [TOS] | ||||
| a,b | I m | UFP | Sol system. not in Encyclopedia | Tomorrow Is Yesterday. [TOS] | ||||
| a,b | I | UFP | 0,0 | s | G | +5 | Sol system. not in Encyclopedia | Tomorrow Is Yesterday. [TOS] |
| I m | UFP | Persephone V. | Too Short a Season. [TNG] | |||||
| b | II | H,E | s | G | +1 | Zalkon. | Transfigurations. [TNG] | |
| b | II | SPH | H,E | Zeta Gelis Cluster. | Transfigurations. [TNG] | |||
| a | III | W,Y | b | G | +7 | Olmerak. | Treachery, Faith and the Great River. [DS9] | |
| b | 65 | DOB | Q,O | s | M | +5 | Gr'oth, I.K.S." | Trials and Tribble-ations. [DS9] |
| b | III | DOB | B,U | s | G | -1 | tribble. PRIME (Iota Geminorum) | Trials and Tribble-ations. [TOS] |
| b | III | OOS | B,W | Deep Space Station K-7. | Trouble With Tribbles, The. [TOS] | |||
| b | III | DOB | B,W | s | G | -1 | Donatu V, Battle of. | Trouble With Tribbles, The. [TOS] |
| b | I m | UFP | Sherman's Planet. | Trouble With Tribbles, The. [TOS] | ||||
| b | III | UFP | B,W | s | G | +3 | Sherman's Planet. | Trouble With Tribbles, The. [TOS] |
| b | 53 | WAC | Sherman's Planet. | Trouble With Tribbles, The. [TOS] | ||||
| b | I m | UFP | Spican flame gem. (Alpha Virginis) | Trouble With Tribbles, The. [TOS] | ||||
| b | II k | UFP | b,k | b | B | -3 | Spican flame gem. (Alpha Virginis) | Trouble With Tribbles, The. [TOS] |
| b | III | DOB | B,U | s | G | -1 | tribble. PRIME (Iota Geminorum) | Trials and Tribble-ations. [DS9] |
| I m | UFP | Bilaren system. | True Q. [TNG] | |||||
| a | III | UFP | Z,X | s | G | +9 | Tagra IV. | True Q. [TNG] |
| c | 75 | I,G | s | G | +5 | Tautine. | True-Q. [TNG] | |
| d | 92 | SPH | E,I | micronebula. not in Fact Files | Tsunkatse. [VGR] | |||
| d | 92 | E,J | b | G | +5 | Pendari. | Tsunkatse. [VGR] | |
| d | 92 | D,J | s | K | +7 | Pensarkan. | Tsunkatse. [VGR] | |
| d | 92 | F,J | s | G | +5 | Tarkanian field mouse. not in Fact Files | Tsunkatse. [VGR] | |
| d | 92 | E,J | s | F | +5 | Vensiddian. not in Fact Files | Tsunkatse. [VGR] | |
| a | III | Z,W | t | F | -1 | Beta Aurigae. MENKALINAN | Turnabout Intruder. [TOS] | |
| a | III | UFP | Z,V | s | M | +5 | Camus II. | Turnabout Intruder. [TOS] |
| a | III | STB | Z,W | starbase. Starbase 2. | Turnabout Intruder. [TOS] |