Difference between revisions of "Talk:Planet"
(→Additional classification of Planets: new section) |
|||
| Line 5: | Line 5: | ||
# External Link: [https://www.facebook.com/groups/2300AD/permalink/10154944072076325/ HI. I'm have a question: What are the planet types in 2300 AD? Can others be added? ] | # External Link: [https://www.facebook.com/groups/2300AD/permalink/10154944072076325/ HI. I'm have a question: What are the planet types in 2300 AD? Can others be added? ] | ||
: - [[User:Maksim-Smelchak|Maksim-Smelchak]] ([[User talk:Maksim-Smelchak|talk]]) 11:34, 31 July 2017 (EDT) | : - [[User:Maksim-Smelchak|Maksim-Smelchak]] ([[User talk:Maksim-Smelchak|talk]]) 11:34, 31 July 2017 (EDT) | ||
| + | |||
| + | == Additional classification of Planets == | ||
| + | |||
| + | There is a finer division of the composition of planets. From GT: First In,p 57: | ||
| + | |||
| + | A planet with a density of 1.3 to 3.0 is a ''silicate world'', with a density 3.1 to 4.5 is a ''low-iron'' world, with density 4.6 to 6.0 is a ''medium-iron'' world, with a density 6.1 to 7.0 is a ''high-iron'' world, and with a density 7.1 and up is a ''metallic'' world. | ||
| + | |||
| + | Values are in grams per cubic centimeter (gm/cc^3). Earth has a density of 5.5, a medium-iron world. Worlds consisting entirely of water (or ice) would be a ''silicate world''. | ||
| + | |||
| + | Icy bodies too small to be planets (i.e. have the gravity to be self-rounding) may have densities in the range of 0.8 to 1.3 range. | ||
| + | |||
| + | From GT:First In, p 58: | ||
| + | |||
| + | G = 0.0228 x K x D , where K is the density given above, and D is the diameter of the world in thousands of miles, and the result G is the gravity of the world in Gs. | ||
| + | |||
| + | [[User:Tjoneslo|Tjoneslo]] ([[User talk:Tjoneslo|talk]]) 11:25, 27 August 2017 (EDT) | ||
Revision as of 15:25, 27 August 2017
Notes (2017)
- External Link: T5 World Mapping Tool
- External Link: Unbelievably Strange Planets in Space
- External Link: HI. I'm have a question: What are the planet types in 2300 AD? Can others be added?
- - Maksim-Smelchak (talk) 11:34, 31 July 2017 (EDT)
Additional classification of Planets
There is a finer division of the composition of planets. From GT: First In,p 57:
A planet with a density of 1.3 to 3.0 is a silicate world, with a density 3.1 to 4.5 is a low-iron world, with density 4.6 to 6.0 is a medium-iron world, with a density 6.1 to 7.0 is a high-iron world, and with a density 7.1 and up is a metallic world.
Values are in grams per cubic centimeter (gm/cc^3). Earth has a density of 5.5, a medium-iron world. Worlds consisting entirely of water (or ice) would be a silicate world.
Icy bodies too small to be planets (i.e. have the gravity to be self-rounding) may have densities in the range of 0.8 to 1.3 range.
From GT:First In, p 58:
G = 0.0228 x K x D , where K is the density given above, and D is the diameter of the world in thousands of miles, and the result G is the gravity of the world in Gs.