61 Cygni A
8 Planets (size proportional to Sqrt(Radius))
Sun Rock Ice Ice Martian Ice Martian Jovian Jovian See
Key
Stellar charactersistics
Stellar mass 0.59 solar masses
Stellar luminosity 0.09
Age 4.043 billion years
(65.369 billion left on main sequence)
Habitable ecosphere radius 0.292 AU

Planetary Overview
#TypeDist.MassRadius
1 Rock Rock 0.274 AU 0.041 EM 0.347 ER
2 Ice Ice 0.473 AU 0.163 EM 0.551 ER
3 Ice Ice 0.745 AU 0.483 EM 0.788 ER
4 Martian Martian 1.357 AU 0.844 EM 1.260 ER
5 Ice Ice 2.183 AU 5.327 EM 2.246 ER
6 Martian Martian 3.581 AU 1.432 EM 1.494 ER
7 Jovian Jovian 5.564 AU 37.547 EM 6.114 ER
8 Jovian Jovian 10.014 AU 75.109 EM 7.861 ER

Planet #1 Statistics
Planet typeRockRock
Tidally Locked 1 Face
Low-G, Cold, Airless, 1-Face
Distance from primary star4.1E+07 KM0.274 AU
Mass2.4E+23Kg0.041 Earth masses
Surface gravity330.1 cm/sec20.34 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature 3.7° Celcius
38.7° Fahrenheit		-10.3° C Earth temperature
-18.5° F Earth temperature
Normal temperature range
MinMax
-230.1° C
-382.2° F		 - 161.6° C
322.8° F
Equatorial radius2215.2 Km0.35 Earth radii
Density5.33 grams/cc0.97 Earth densities
Eccentricity of orbit0.078
Escape Velocity 3.8 Km/sec
Molecular weight retained60.9 and aboveSO2, SO3, Kr, Xe
Axial tilt16°
Planetary albedo 0.07
Exospheric Temperature1441.40° K+168.40° C Earth temperature
Length of year68.20 Earth days1.00 Local days
Length of day1636.74 hours
Boiling point of water-273.1° Celcius
-459.7° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage 0.0


Planet #2 Statistics
Planet typeIceIce
Tidally Locked 1 Face
Low-G, Cold, Icy, Arid, Cloudless, Unbreathably thin atmosphere (Ne - unbreathable), 1-Face
Distance from primary star7.1E+07 KM0.473 AU
Mass9.7E+23Kg0.163 Earth masses
Surface gravity526.6 cm/sec20.54 Earth gees
Surface pressure 46 millibars0.045 Earth atmospheres
Surface temperature-105.4° Celcius
-157.7° Fahrenheit		-119.4° C Earth temperature
-214.9° F Earth temperature
Normal temperature range
NightDay
-238.9° C
-398.0° F		 - -12.4° C
9.6° F
MinMax
-247.4° C
-413.3° F		 - 1.6° C
34.8° F
Equatorial radius3512.0 Km0.55 Earth radii
Density5.37 grams/cc0.97 Earth densities
Eccentricity of orbit0.035
Escape Velocity 6.1 Km/sec
Molecular weight retained 8.2 and aboveN, O, CH4, NH3, H2O, Ne, N2, CO...
Neon 100.0%  46 mb (ipp: -17) 
Axial tilt20°
Planetary albedo 0.68
Exospheric Temperature483.21° K-789.79° C Earth temperature
Length of year154.79 Earth days1.00 Local days
Length of day3715.07 hours
Boiling point of water30.6° Celcius
87.0° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.1
Ice cover percentage97.0


Planet #3 Statistics
Planet typeIceIce
Low-G, Cold, Icy, Arid, Cloudless, Thin atmosphere
Distance from primary star1.1E+08 KM0.745 AU
Mass2.9E+24Kg0.483 Earth masses
Surface gravity762.0 cm/sec20.78 Earth gees
Surface pressure 400 millibars0.394 Earth atmospheres
Surface temperature-133.8° Celcius
-208.8° Fahrenheit		-147.8° C Earth temperature
-266.0° F Earth temperature
Normal temperature range
NightDay
-138.3° C
-217.0° F		 - -129.5° C
-201.1° F
MinMax
-160.0° C
-255.9° F		 - -109.6° C
-165.3° F
Equatorial radius5025.4 Km0.79 Earth radii
Density5.43 grams/cc0.98 Earth densities
Eccentricity of orbit0.050
Escape Velocity 8.8 Km/sec
Molecular weight retained 1.6 and aboveH2, He, N, O, CH4, NH3, H2O, Ne...
Axial tilt13°
Planetary albedo 0.70
Exospheric Temperature194.93° K-1078.07° C Earth temperature
Length of year305.80 Earth days350.53 Local days
Length of day20.94 hours
Boiling point of water76.2° Celcius
169.1° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage100.0


Planet #4 Statistics
Planet typeMartianMartian
Low-G, Cold, Icy, Arid, Cloudless, Normal atmosphere
Distance from primary star2E+08 KM1.357 AU
Mass5E+24Kg0.844 Earth masses
Surface gravity520.7 cm/sec20.53 Earth gees
Surface pressure 655 millibars0.646 Earth atmospheres
Surface temperature-149.6° Celcius
-237.3° Fahrenheit		-163.6° C Earth temperature
-294.5° F Earth temperature
+8.4° C greenhouse effect
Normal temperature range
NightDay
-152.8° C
-243.1° F		 - -146.6° C
-231.8° F
MinMax
-171.8° C
-277.2° F		 - -129.3° C
-200.7° F
Equatorial radius8038.6 Km1.3 Earth radii
Density2.32 grams/cc0.42 Earth densities
Eccentricity of orbit0.096
Escape Velocity 9.1 Km/sec
Molecular weight retained 0.5 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt32°
Planetary albedo 0.43
Exospheric Temperature 58.76° K-1214.24° C Earth temperature
Length of year751.72 Earth days857.07 Local days
2.06 Earth years
Length of day21.05 hours
Boiling point of water88.5° Celcius
191.4° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage51.4


Planet #5 Statistics
Planet typeIceIce
Cold, Icy, Arid, Cloudless, Unbreathably thick atmosphere
Distance from primary star3.3E+08 KM2.183 AU
Mass3.2E+25Kg5.327 Earth masses
Surface gravity1035.3 cm/sec21.06 Earth gees
Surface pressure26097 millibars25.755 Earth atmospheres
Surface temperature-137.3° Celcius
-215.1° Fahrenheit		-151.3° C Earth temperature
-272.3° F Earth temperature
+40.3° C greenhouse effect
Normal temperature range
MinMax
-142.9° C
-225.3° F		 - -131.9° C
-205.5° F
Equatorial radius14324.4 Km2.2 Earth radii
Density2.59 grams/cc0.47 Earth densities
Eccentricity of orbit0.129
Escape Velocity17.2 Km/sec
Molecular weight retained 0.1 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt35°
Planetary albedo 0.70
Exospheric Temperature 22.71° K-1250.29° C Earth temperature
Length of year1533.55 Earth days2470.91 Local days
4.20 Earth years
Length of day14.90 hours
Boiling point of water218.2° Celcius
424.8° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage100.0


Planet #6 Statistics
Planet typeMartianMartian
Low-G, Cold, Icy, Arid, Cloudless, Normal atmosphere
Distance from primary star5.4E+08 KM3.581 AU
Mass8.6E+24Kg1.432 Earth masses
Surface gravity629.2 cm/sec20.64 Earth gees
Surface pressure 1885 millibars1.861 Earth atmospheres
Surface temperature-194.8° Celcius
-318.7° Fahrenheit		-208.8° C Earth temperature
-375.9° F Earth temperature
+3.1° C greenhouse effect
Normal temperature range
NightDay
-196.0° C
-320.8° F		 - -193.8° C
-316.8° F
MinMax
-209.0° C
-344.2° F		 - -182.1° C
-295.8° F
Equatorial radius9526.5 Km1.5 Earth radii
Density2.36 grams/cc0.43 Earth densities
Eccentricity of orbit0.036
Escape Velocity10.9 Km/sec
Molecular weight retained 0.1 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt25°
Planetary albedo 0.49
Exospheric Temperature 8.44° K-1264.56° C Earth temperature
Length of year3222.51 Earth days4047.79 Local days
8.82 Earth years
Length of day19.11 hours
Boiling point of water118.2° Celcius
244.7° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage62.1


Planet #7 Statistics
Planet typeJovianJovian
Distance from primary star8.3E+08 KM5.564 AU
Mass2.2E+26Kg37.547 Earth masses
10.827 Earth masses dust
26.719 Earth masses gas
Equatorial radius38998.1 Km6.1 Earth radii
Density0.90 grams/cc0.16 Earth densities
Eccentricity of orbit0.018
Escape Velocity27.7 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt23°
Planetary albedo 0.48
Exospheric Temperature 3.50° K-1269.50° C Earth temperature
Length of year6240.35 Earth days11497.72 Local days
17.08 Earth years
Length of day13.03 hours


Planet #8 Statistics
Planet typeJovianJovian
Distance from primary star1.5E+09 KM10.014 AU
Mass4.5E+26Kg75.109 Earth masses
13.730 Earth masses dust
61.379 Earth masses gas
Equatorial radius50134.7 Km7.9 Earth radii
Density0.85 grams/cc0.15 Earth densities
Eccentricity of orbit0.125
Escape Velocity34.6 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt35°
Planetary albedo 0.54
Exospheric Temperature 1.08° K-1271.92° C Earth temperature
Length of year15065.64 Earth days30539.06 Local days
41.25 Earth years
Length of day11.84 hours


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