Big World

Big Worlds are worlds with larger than expected Size.

• Planet or world type.

Description / Specifications

Occasionally, a satellite mainworld in a system without gas giants requires a BigWorld as its primary.

• Bigworlds may also occur throughout a system. LARGE “Jovian”

Planetary Characteristics

Big Worlds range in size from 14,400 km to 30,400 km.

Size Code	Diameter	Earth Masses (density 5.5 g/cm³)	Surface Gravity	Notes
9	14,400 km	1.424 Earths	1.125 G
A	16,000 km	1.953 Earths	1.25 G
B	17,600 km	2.600 Earths	1.375 G
C	19,200 km	3.375 Earths	1.5 G
D	20,800 km	4.291 Earths	1.625 G
E	22,400 km	5.359 Earths	1.75 G	Typical Big World
F	24,000 km	6.592 Earths	1.875 G
G	25,600 km	8.000 Earths	2 G
H	27,200 km	9.596 Earths	2.125 G
J	28,800 km	11.391 Earths	2.25 G
K	30,400 km	13.397 Earths	2.375 G

Probable Planetary Orbit & Climate

Big Worlds may be located within any region of a system.

Big Worlds may retain atmosphere types 2 to F. The "typical" Big World has an atmosphere rated as E (Ellipsoid)

History & Background / Dossier

Larger Big Worlds are substantially more massive than small gas giants and can have greater diameters.

References & Contributors / Sources

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This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.

• Marc Miller. Worlds and Adventures (Game Designers Workshop, 1977), .Marc Miller, Robert Eaglestone, Don McKinney. Worlds and Adventures (Far Future Enterprises, 2019), .
• Marc Miller. Scouts (Game Designers Workshop, 1983), .
• T5: Core rules
• External Link: Beowolf's Libary Data Website ^{dead link}
• Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science