Talk:Cart'hen system: Difference between revisions
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The rereading also brings Cart'hen III into doubt. A diameter of 4378km puts that planet in the same ball park as [[wp:Callisto (moon)|Callisto]] (Jupiters' second largest moon) and [[wp:Mercury (planet)|Mercury]], both have diameters in the 4800-4900km range. Density lacks a unit of measurement, but assuming it is g/cm<sup>3</sup>, that makes it more dense than any of the [[wp:Terrestrial planet|terrestrial planets]] in our solar system (all under 5.6). Surface gravity can be calculated using other stats using a formula found at [[wp:List of Solar System objects by surface gravity|List of Solar System objects by surface gravity]]. I've not tried checking that one myself. - [[User:Salak|<font color="maroon">Lt. Salak</font>]] (Amateur Astronomer)<sup><i>[[User talk:Salak|Talk]]</i></sup> 04:21, 4 March 2008 (CST) | The rereading also brings Cart'hen III into doubt. A diameter of 4378km puts that planet in the same ball park as [[wp:Callisto (moon)|Callisto]] (Jupiters' second largest moon) and [[wp:Mercury (planet)|Mercury]], both have diameters in the 4800-4900km range. Density lacks a unit of measurement, but assuming it is g/cm<sup>3</sup>, that makes it more dense than any of the [[wp:Terrestrial planet|terrestrial planets]] in our solar system (all under 5.6). Surface gravity can be calculated using other stats using a formula found at [[wp:List of Solar System objects by surface gravity|List of Solar System objects by surface gravity]]. I've not tried checking that one myself. - [[User:Salak|<font color="maroon">Lt. Salak</font>]] (Amateur Astronomer)<sup><i>[[User talk:Salak|Talk]]</i></sup> 04:21, 4 March 2008 (CST) | ||
:Oh, and you'll be doing amazingly well to find a habitable planet around a White Dwarf. Earth like planets are only thiought possible around G type stars like our Sun, along with some F and K type stars. | :Oh, and you'll be doing amazingly well to find a habitable planet around a White Dwarf. Earth like planets are only thiought possible around G type stars like our Sun, along with some F and K type stars. White Dwarfs are by definition D type. Any planets in their Goldilocks Zone (Not too cold, not too warm, just right for life) would have been obliterated by the Red Giant preceeding it. - [[User:Salak|<font color="maroon">Lt. Salak</font>]]<sup><i>[[User talk:Salak|Talk]]</i></sup> 05:30, 5 March 2008 (CST) | ||
Revision as of 11:31, 5 March 2008
I'll correct my edit comment. I read "radius", not "diameter" for some reason. Cart'hen II's a lot smaller than Pluto and Eris, is probably more comparable in size to Charon or Quaoar which are both Dwarf Planet candidates. The former is currently considered Pluto's largest moon.
The rereading also brings Cart'hen III into doubt. A diameter of 4378km puts that planet in the same ball park as Callisto (Jupiters' second largest moon) and Mercury, both have diameters in the 4800-4900km range. Density lacks a unit of measurement, but assuming it is g/cm3, that makes it more dense than any of the terrestrial planets in our solar system (all under 5.6). Surface gravity can be calculated using other stats using a formula found at List of Solar System objects by surface gravity. I've not tried checking that one myself. - Lt. Salak (Amateur Astronomer)Talk 04:21, 4 March 2008 (CST)
- Oh, and you'll be doing amazingly well to find a habitable planet around a White Dwarf. Earth like planets are only thiought possible around G type stars like our Sun, along with some F and K type stars. White Dwarfs are by definition D type. Any planets in their Goldilocks Zone (Not too cold, not too warm, just right for life) would have been obliterated by the Red Giant preceeding it. - Lt. SalakTalk 05:30, 5 March 2008 (CST)