Difference between revisions of "Planetary Size"
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| 0 | | 0 | ||
| − | | Asteroid/Planetary Belt | + | | Asteroid/[[Planetary Belt]] |
(...around a [[star]]) | (...around a [[star]]) | ||
| Multiple < 200 | | Multiple < 200 | ||
| [[Microgravity]] | | [[Microgravity]] | ||
| − | | [[ | + | | [[Planetary Belt]] |
* [[Planetesimal]] | * [[Planetesimal]] | ||
* [[Planetoid]] | * [[Planetoid]] | ||
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| R | | R | ||
| − | | Asteroid/Planetary Ring | + | | Asteroid/[[Planetary Ring]] |
(...around a [[world]]) | (...around a [[world]]) | ||
| Multiple < 1 | | Multiple < 1 | ||
| [[Microgravity]] | | [[Microgravity]] | ||
| − | | [[ | + | | [[Planetary Ring]] |
* [[Planetesimal]] | * [[Planetesimal]] | ||
* [[Planetoid]] | * [[Planetoid]] | ||
Revision as of 11:43, 17 November 2018
Planetary Size: Worlds are classified according to their physical size.
- Only Mainworlds (worlds or planets) of interest are recorded.
- e.g. Gas Giants are simply classified as Small (SGG) or Large (LGG).
Description (Specifications)
Planetary density and size are two primary factors hen determining a planet's gravity.
Planetary Size Data
The following table outlines the UWP codes for the size of a body:
Planetary Size Code Description Diameter (Km) Expected
GravityRemarks 0 Asteroid/Planetary Belt (...around a star)
Multiple < 200 Microgravity Planetary Belt R Asteroid/Planetary Ring (...around a world)
Multiple < 1 Microgravity Planetary Ring D Debris 1+ < 200 Microgravity Tiny World S Very Small 200-799 (400 km, 0.02g - 0.03g) Very Small World 1 Small 800-2399 (1,600 km, 0.05g - 0.09g) Small World 2 Small (e.g. Luna) 2,400-3,999 (3,200 km, 0.10g - 0.17g) Small World 3 Small (e.g. Mercury) 4,000-5,599 (4,800 km, 0.24g - 0.34g) Small World 4 Small (e.g. Mars) 5,600-7,199 (6,400 km, 0.32g - 0.46g) Meso World 5 Medium 7,200-8,799 (8,000 km, 0.40g - 0.57g) Meso World 6 Medium 8,800-10,399 (9,600 km, 0.60g - 0.81g) Meso World 7 Medium 10,400-11,999 (11,200 km, 0.70g - 0.94g) Macro World 8 Large (e.g. Venus / Terra) 12,000-13,599 (12,800 km, 0.80g - 1.08g) Macro World 9 Large 13,600-15,199 (14,400 km, 1.03g - 1.33g) Macro World A Large 15,200-16,799 (16,000 km, 1.14g - 1.48g) Big World B Huge 16,800+ Macrogravity Big World SGG Small Gas Giant (no futher codes) 40,000-120,000 Macrogravity Gas Giant LGG Large Gas Giant (no further codes) 120,000-240,000+ Macrogravity Gas Giant
- NOTE-1: Please note that the size code D ( Debris ) is non-standard. It is included to cover such cases as Comet Mid-Rift (Deneb 3234), which are less than 200Km, but not part of an asteroid belt, yet important enough to have mention.
- NOTE-2: Please note that gravity values are estimations based on a standard planetary density. Planets with less or more dense cores may have very different values from the suggested average.
History & Background (Dossier)
No information yet available.
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. Referee's Manual (Game Designers Workshop, 1987), .
- MegaTraveller World Builder's Handbook
- TNE World Tamer's Handbook
- Marc Miller. T5 Core Rules (Far Future Enterprises, 2013), 409,413.
- Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science