Memories of Connor's Adventures

Orlando the Adventurer pulled a Scimitar from beneath his Robes and smiled...

Friday 29 March 2019

Stellar Cartography: Another Visit to the Proxima Centauri System


Here is a further examination of our exoplanet in the Proxima Centauri system. Atmosphere, Rings, and Albedo are required to determine its distance from the star.


Planet #1


Diazomethane Atmosphere






Atmospheric Albedo 0.79





Ozone-Water Rings





Ring Albedo 0.3

   



       






          Melting                              Boiling
             Point                                    Point
                 |       diazomethane          |
              128K                                     250K
  |               ozone      |                                   |
 81K                         161K                              261K
Melting                    Boiling                         Vapour
Point                        Point
                                                                                    |   water     |
                                                                                 273K            373K
                                                                                 Melt.            Boil.
                                                               |   planet    |
Proxima Centauri c
Atmospheric Albedo                   0.79
Semi-major Axis                          0.0235AU - 0.0196AU
Orbital Period (days)                  2.87 days - 3.765 days
Temperature                                250K - 273K

Description: albedo of 0.79 specifies a range for cumulus stratus (low altitude cloud) or fresh snow, both viable at -23 degrees Celsius. While albedo 0.3 specifies ice in the planetary rings.
Low altitude methane clouds, and an Ice Ring.


  Planet                                       Period(days)      Dist(AU)                 Albedo    Temperature 
  Proxima Centauri c / Rawn   2.87 - 3.765       0.0196 - 0.0235    0.79         250K - 273K  
Description: low altitude Cumulostratus Methane cloud blankets the entire planet while Ozone/Water Ice rings extend to about 2R of the planet Radius. The substantial Partial Ring gap indicates an off-axis moon or a chance encounter with a rogue moon.

Radius: Proxima Centauri itself has a radius of 0.1542Rsolar. Based on an examination of the hubble photo the planet has about 1/10th - 1/20th of Rproxima. 1Rsolar is about 10RJupiter so we are looking at a 1.5RJupiter- 0.76RJupiter planet. Our own Jupiter has at least four descent sized moons and a strong magnetic field so it could have a number of habitable zone moons with water. 

Planet #2
Update(4 april 2019): Its ringless friend mid hubble image is diazomethane with 0.7-0.78 albedo. Odd that its albedo is lower than Proxima Centauri c. Perhaps it has a higher carbon content.




Equatorial Albedo 0.78


Polar albedo 0.7


  Planet                                       Period(days)      Dist(AU)                 Albedo    Temperature 
  Proxima Centauri d / Faam   3.8865-4.8975  0.024-0.028          0.7-0.78      +250K         
Description: low altitude Cumulostratus Methane cloud blankets the entire planet.



Planet #3
A third planet appears to be blanketed in Ozone. Its albedo is near identical to proxima d with 0.7-0.78.



Polar Albedo 0.7

Equatorial Albedo 0.78

  Planet                                             Period(days)      Dist(AU)           Albedo    Temperature 
  Proxima b ?                 ozone       3.422-18.5355  0.022-0.068      0.7-0.78   161K-261K   
                                        Water       1.4784                0.0126               0.7            373K             

Description: Ozone cloud appears to blanket the entire planet. That seems to suggest intense electrical storms or industrialization. The range on the orbital period is rather diverse. Water vapour atmosphere is going to mean this is planet Tao as opposed to a colossal range that is offered by ozone.



  Planet            Period(days)      Dist(AU)     Temp (Kelvin, Celsius)          Albedo Adj.   
  Tao                      2                      0.015412                417K, 138.85C          Conif.  Ocean 
  Rawn                  3                      0.020195                364K, 90.85C             0.79 (cumul. st.)
  Faam                   4                     0.024465                331K, 57.85C              80.85C            
  Yung                    7                     0.035528                274K, -0.85C              20C      21.85C
  Klaang                8.2                   0.039481                260K, -13.15C           5.85C   6.85C  
  Proxima B         11.186             0.048561                235K, -38.15C
        Phet Rok      1                                                                                        
  Suun                  12.4                  0.052014                227K, -46.15C
  Khaan                21.75                0.075651               118K, -155.15C        
  Hin                      >6                     Intruder               Occasionaly Nice?

That checks off Rawn and possibly Faam.

  Planet               Atmo Type         Period(days)      Dist(AU)           Albedo    Temperature 
  Rawn                 Methane           2.87 - 3.765        0.0196-0.0235 0.79         250K - 273K  
  Faam                 Methane           3.8865-4.8975   0.024-0.028      0.7-0.78   +250K           
  Proxima b?       Ozone               3.422-18.5355    0.022-0.068      0.7-0.78   161K-261K   
                             Or Water ?        1.4784                 0.0126               0.7            373K             


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