The Worlds of the Federation
The Worlds of the Federation is an officially licensed in-universe reference book written and illustrated by Shane Johnson, incorporating cover art, painted by Don Ivan Punchatz, which is drawn from a color insert (painted by Punchatz) that the book includes.

The Worlds of the Federation has since been relegated to apocryphal status, owing to contradicting information from the television programs.

Summary
From the paperback book back cover
Shane Johnson, bestselling author of Mr. Scott's Guide to the Enterprise, takes the reader on an imaginative, fictional journey into the Star Trek universe. Based on the Star Trek adventures (including  and ), this book uses hundreds of star charts and line drawings as well as a rich text to outline the history of the worlds visited by the starship .

The Worlds of the Federation also investigates the unaligned and hostile alien races of Star Trek, from the fierce warriors of the Klingon Empire to the enigmatic, all-powerful Organians. And as a special bonus, we've included a spectacular, full-color insert of Star Treks most exotic alien lifeforms featuring paintings by noted science fiction illustrator Don Ivan Punchatz.

Contents
Preface
Introduction (Written by LCDR Data)
UFP: An Historical Overview
Planetary Classification System
Page Key and Symbols
Member WorldsThe worlds are listed by their official names followed by their respective planetary classifications, their indigenous names if any, and the names of the primaries of the star systems that contain them. (These are followed by X-Y-Z Cartesian coordinate numbers, all of which are considered apocryphal.)
Earth (M), Terra, Sol
 (M), T'Khasi, 40 Eridani A
Tellar (M), Miracht, 61 Cygni
Andor (M), Fesoan, Epsilon Indi
Alpha Centauri VII (M), Al Rijil, Alpha Centauri
Alpha III (L), Kericindal, Alpha
Vega IX (M), Kesir-Tosharra, Vega
Deneb II, IV, V (M), Kreta, Kidta, Kelta, Deneb A
Marcos XII (L), Marcos
Izar, Epsilon Bootis
Rigel II, IV - VIII (M), Rigel
Cait (M), Ferasa, 15 Lyncis
Antos IV (M), Dorafane, Antos
Catulla (M), Cendo-Prae, Theta Pictoris
Tiburon (M), Simeran, Omega Fornacis A
Merak II (M), Merak
Aldebaran (M), Alpha Tauri
Mu Leonis II (M), Ardana, Mu Leonis A
Argelius II (M), Nelphia, Argelius B
Daran V (M), Daran
Aurelia (L), Meriabii, Xi Hercules
Mantilles (M), Pallas XIV
Medusa (C), Visalayan, Xi Hydrae
Coridan III (M), Desotriana, Coridan
Delta (M), Seyalia, Delta Tricatu (contradicts placement in UFGC 114 Delta)
Sauria (L), Lyaksti'kton, UFC 512
Yonada (unclassified), New Fabrina, UFC 376082
Theta Kiokis II (M), Melkot, Theta Kiokis
Betazed (M), Cyndriel, Beta Veldonna
Bynaus (M), 101100010100110, Sigma Regonis (contradicts placement in Beta Magellan)
Benzar (M), Pheradon, Gamma Xertia
Phylos II (M), Merari
Neutral and/or Independent Worlds
Antares B III (L), 
Argo (N), Hestalor, UFC 78856
Berengaria VII (M), Berengaria
Beta III (M), Landru, UFC 611 - Beta
Capella IV (Class G), Kohath, Capella
Ceti Alpha V, Ceti Alpha (Menkar)
Delos III, IV (M), Ornara, Brekka, Delos
Delta Dorado VII (M), Gideon, Delta Dorado
Dimorus IV (M), Dimorus
892-IV (M), Magna Roma, UFC 892
Eminiar III, VII (M), Vendikar, Eminiar, Eminiar
Excalbia I (I), Excalbia
Gamma Trianguli VI (M), Vaalel, Gamma Trianguli
Iotia (M), Okmyx, Sigma Iotia system (cited as a textbook example of the importance of the Prime Directive)
Janus VI, Shaul, Janus
Kaferia (M), Kohat-Seredi, Tau Ceti
Klinzhai (M), Klinzhai, Klingon
Lactra VII (M), Sessaline, Lactra
M-113 (M), Fotialla, UFC 113
M24 Alpha II (M), Triskelion, M24 Alpha
M43 Alpha IV, V (M), Ekos, , M43 Alpha
Mudd (K), UFC 257704
Onlies (M), Earth, UFC 347601
Organia IV (M), Organia, "Indigenous Name Unknown"
Regulus (M), Arodi, Alpha Leonis
Talos IV (M), Clesik, Talos (GP P-007(?))
Taurus II (G), Beta Tauri
Time Planet (L), UFC 465537, "Indigenous Name Unknown; Stellar Location CLASSIFIED" (GP P-119(?))
Velara III (K), Velara
Zeta Bootis III (M), Neural, Zeta Bootis
Hostile Worlds
Ferengal (M), "Primary Unknown, Coordinates Not Established" (contradicts later references to Ferenginar as a neutral and/or independent world)
Tau Lacertae IX, Gornar, Tau Lacertae
Romulus (M) "Indigenous Name Unknown; Primary Unknown; Coordinates Not Established" (fails to mention the planet Remus which is mentioned, though not actually shown, in )
Tholia II, Tholia "Primary Unknown, Coordinates Not Established"
Appendix
Featured Planets and Their Primaries
Planetary Ambassadors

Background information
 A softcover, or paperback, book, it measures 11×8.5×0.5 inches. A similarly sized hardback in dust jacket Book Club Edition was concurrently released in a substantial print run, though issued without ISBN as was commonplace for such releases. A UK edition was shortly thereafter released by Titan Books, albeit as a paperback edition only.
 Several US reprints were released afterwards, already starting in 1989. But for unknown reasons these reprints were endowed with a new ISBN, the earliest known one featured on the 4th edition of November 1989.
 The section detailing the Sol star system indicates that it contains ten planets, referencing another planet after Pluto. This tenth planet, however, though identified variously as Persephone and as Proserpina, has never been shown, or even mentioned, in any other Star Trek production.
 Writer Ronald D. Moore hated Johnson's description of the Klingons in this book so much that he went out of his way to contradict every detail of it that he could when writing his Klingon-defining memo during the writing of the episode . ()
 Despite having been fully licensed and endorsed at the time of the book's publication, Moore's stance bore fruit with the official Star Trek franchise itself, when it in 2002 re-evaluated the older in-universe reference works, hitherto considered as "semi-" or "quasi-canon". Works they deemed to have deviated too much from later established (on-screen) canon were subsequently demoted to the apocrypha status of comics, novels, non-production art (such as Star Trek: Ships of the Line calendars) and (computer) games. In no small part due to Moore's work on depicting Klingons, The Worlds of the Federation too was among those losing its "official" – as in compliance with canon – status, as indeed were all other books written by Johnson. ()
 At least one other international edition is known to exist, the German language Star Trek: Die Welten der Föderation, translated by Claudia Kern and released by  in 1999 as paperback only.

de:Die Welten der Föderation
Worlds of the Federation