Alpha Mensae
11 Planets (size proportional to Sqrt(Radius))
Sun Rock Rock Rock Water Ice Jovian Jovian Jovian Jovian Rock Rock See
Key
Stellar charactersistics
Stellar mass 0.87 solar masses
Stellar luminosity 0.83
Age 2.699 billion years
(7.783 billion left on main sequence)
Habitable ecosphere radius 0.911 AU

Planetary Overview
#TypeDist.MassRadius
1 Rock Rock 0.336 AU 0.229 EM 0.616 ER
2 Rock Rock 0.477 AU 0.026 EM 0.298 ER
3 Rock Rock 0.714 AU 0.108 EM 0.480 ER
4 Water Water 0.940 AU 1.778 EM 1.205 ER
5 Ice Ice 1.882 AU 0.954 EM 0.985 ER
6 Jovian Jovian 2.880 AU 100.044 EM 7.005 ER
7 Jovian Jovian 6.661 AU 83.150 EM 7.118 ER
8 Jovian Jovian 11.576 AU 395.303 EM 11.744 ER
9 Jovian Jovian 19.270 AU 41.482 EM 6.349 ER
10 Rock Rock 30.444 AU 0.316 EM 0.916 ER
11 Rock Rock 46.189 AU 0.204 EM 0.793 ER

Planet #1 Statistics
Planet typeRockRock
Resonant Spin Locked
Low-G, Hot, Airless, 1-Face
Distance from primary star5E+07 KM0.336 AU
Mass1.4E+24Kg0.229 Earth masses
Surface gravity590.7 cm/sec20.60 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature168.6° Celcius
335.5° Fahrenheit		+154.6° C Earth temperature
+278.3° F Earth temperature
Normal temperature range
NightDay
-185.6° C
-302.1° F		 - 365.8° C
690.4° F
MinMax
-198.6° C
-325.5° F		 - 369.9° C
697.9° F
Equatorial radius3929.1 Km0.62 Earth radii
Density5.38 grams/cc0.97 Earth densities
Eccentricity of orbit0.186
Escape Velocity 6.8 Km/sec
Molecular weight retained123.0 and aboveXe
Axial tilt20°
Planetary albedo 0.07
Exospheric Temperature9340.46° K+8067.46° C Earth temperature
Length of year76.38 Earth days1.46 Local days
Length of day1258.41 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 typeRockRock
Tidally Locked 1 Face
Low-G, Hot, Airless, 1-Face
Distance from primary star7.1E+07 KM0.477 AU
Mass1.5E+23Kg0.026 Earth masses
Surface gravity282.6 cm/sec20.29 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature 97.6° Celcius
207.7° Fahrenheit		+83.6° C Earth temperature
+150.5° F Earth temperature
Normal temperature range
MinMax
-223.0° C
-369.4° F		 - 282.6° C
540.7° F
Equatorial radius1898.9 Km0.3 Earth radii
Density5.33 grams/cc0.96 Earth densities
Eccentricity of orbit0.010
Escape Velocity 3.3 Km/sec
Molecular weight retained263.7 and above
Axial tilt21°
Planetary albedo 0.07
Exospheric Temperature4634.61° K+3361.61° C Earth temperature
Length of year129.20 Earth days1.00 Local days
Length of day3100.76 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 #3 Statistics
Planet typeRockRock
Tidally Locked 1 Face
Low-G, Hot, Airless, 1-Face
Distance from primary star1.1E+08 KM0.714 AU
Mass6.4E+23Kg0.108 Earth masses
Surface gravity458.1 cm/sec20.47 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature 30.0° Celcius
86.0° Fahrenheit		+16.0° C Earth temperature
+28.8° F Earth temperature
Normal temperature range
MinMax
-233.1° C
-387.6° F		 - 197.0° C
386.6° F
Equatorial radius3063.1 Km0.48 Earth radii
Density5.35 grams/cc0.97 Earth densities
Eccentricity of orbit0.043
Escape Velocity 5.3 Km/sec
Molecular weight retained45.1 and aboveNO2, O3, SO2, SO3, Kr, Xe
Axial tilt30°
Planetary albedo 0.07
Exospheric Temperature2072.32° K+799.32° C Earth temperature
Length of year236.28 Earth days1.00 Local days
Length of day5670.70 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 #4 Statistics
Planet typeWaterWater
High-G, Cloudy, Thick atmosphere (He, N2, O2 - breathable)
Distance from primary star1.4E+08 KM0.940 AU
Mass1.1E+25Kg1.778 Earth masses
Surface gravity1200.4 cm/sec21.22 Earth gees
Surface pressure 3680 millibars3.632 Earth atmospheres
Surface temperature 16.1° Celcius
61.1° Fahrenheit		+2.1° C Earth temperature
+3.9° F Earth temperature
Normal temperature range
NightDay
13.9° C
56.9° F		 - 18.3° C
64.9° F
MinMax
-1.0° C
30.2° F		 - 32.4° C
90.3° F
Equatorial radius7685.4 Km1.2 Earth radii
Density5.59 grams/cc1 Earth densities
Eccentricity of orbit0.118
Escape Velocity13.6 Km/sec
Molecular weight retained 4.0 and aboveHe, N, O, CH4, NH3, H2O, Ne, N2...
Helium 59.5%  2190 mb (ipp: 2153) 
Nitrogen 37.5%  1380 mb (ipp: 1356) 
Oxygen  2.8%  102 mb (ipp: 101) 
Argon  0.2%  7 mb (ipp: 7) 
Axial tilt22°
Planetary albedo 0.44
Exospheric Temperature1194.70° K-78.30° C Earth temperature
Length of year357.13 Earth days606.68 Local days
Length of day14.13 hours
Boiling point of water139.6° Celcius
283.2° Fahrenheit
Hydrosphere percentage99.9
Cloud cover percentage80.7
Ice cover percentage 1.6


Planet #5 Statistics
Planet typeIceIce
Cold, Icy, Arid, Cloudless, Normal atmosphere
Distance from primary star2.8E+08 KM1.882 AU
Mass5.7E+24Kg0.954 Earth masses
Surface gravity964.4 cm/sec20.98 Earth gees
Surface pressure 1061 millibars1.047 Earth atmospheres
Surface temperature-111.3° Celcius
-168.3° Fahrenheit		-125.3° C Earth temperature
-225.5° F Earth temperature
Normal temperature range
NightDay
-113.8° C
-172.8° F		 - -108.9° C
-164.0° F
MinMax
-134.6° C
-210.3° F		 - -89.7° C
-129.4° F
Equatorial radius6282.4 Km0.99 Earth radii
Density5.49 grams/cc1 Earth densities
Eccentricity of orbit0.202
Escape Velocity11.0 Km/sec
Molecular weight retained 1.5 and aboveH2, He, N, O, CH4, NH3, H2O, Ne...
Axial tilt25°
Planetary albedo 0.70
Exospheric Temperature298.33° K-974.67° C Earth temperature
Length of year1010.98 Earth days1571.37 Local days
2.77 Earth years
Length of day15.44 hours
Boiling point of water101.5° Celcius
214.7° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.1
Ice cover percentage100.0


Planet #6 Statistics
Planet typeJovianJovian
Distance from primary star4.3E+08 KM2.880 AU
Mass6E+26Kg100.044 Earth masses
16.328 Earth masses dust
83.716 Earth masses gas
Equatorial radius44680.7 Km7 Earth radii
Density1.60 grams/cc0.29 Earth densities
Eccentricity of orbit0.123
Escape Velocity42.3 Km/sec
Molecular weight retained 0.1 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt23°
Planetary albedo 0.53
Exospheric Temperature127.36° K-1145.64° C Earth temperature
Length of year1913.95 Earth days5024.22 Local days
5.24 Earth years
Length of day9.14 hours


Planet #7 Statistics
Planet typeJovianJovian
Distance from primary star1E+09 KM6.661 AU
Mass5E+26Kg83.150 Earth masses
11.232 Earth masses dust
71.918 Earth masses gas
Equatorial radius45397.7 Km7.1 Earth radii
Density1.27 grams/cc0.23 Earth densities
Eccentricity of orbit0.130
Escape Velocity38.2 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt44°
Planetary albedo 0.50
Exospheric Temperature 23.81° K-1249.19° C Earth temperature
Length of year6731.59 Earth days15855.42 Local days
18.43 Earth years
Length of day10.19 hours


Planet #8 Statistics
Planet typeJovianJovian
Distance from primary star1.7E+09 KM11.576 AU
Mass2.4E+27Kg395.303 Earth masses
24.225 Earth masses dust
371.078 Earth masses gas
Equatorial radius74904.8 Km12 Earth radii
Density1.34 grams/cc0.24 Earth densities
Eccentricity of orbit0.036
Escape Velocity64.9 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt31°
Planetary albedo 0.47
Exospheric Temperature 7.89° K-1265.11° C Earth temperature
Length of year15412.15 Earth days47971.13 Local days
42.20 Earth years
Length of day7.71 hours


Planet #9 Statistics
Planet typeJovianJovian
Distance from primary star2.9E+09 KM19.270 AU
Mass2.5E+26Kg41.482 Earth masses
5.322 Earth masses dust
36.159 Earth masses gas
Equatorial radius40494.2 Km6.3 Earth radii
Density0.89 grams/cc0.16 Earth densities
Eccentricity of orbit0.085
Escape Velocity28.6 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt36°
Planetary albedo 0.50
Exospheric Temperature 2.85° K-1270.15° C Earth temperature
Length of year33123.52 Earth days61778.17 Local days
90.69 Earth years
Length of day12.87 hours


Planet #10 Statistics
Planet typeRockRock
Low-G, Cold, Airless
Distance from primary star4.6E+09 KM30.444 AU
Mass1.9E+24Kg0.316 Earth masses
Surface gravity369.9 cm/sec20.38 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature-227.5° Celcius
-377.6° Fahrenheit		-241.5° C Earth temperature
-434.8° F Earth temperature
Normal temperature range
NightDay
-232.5° C
-386.5° F		 - -222.5° C
-368.5° F
MinMax
-249.5° C
-417.1° F		 - -205.7° C
-338.3° F
Equatorial radius5839.7 Km0.92 Earth radii
Density2.27 grams/cc0.41 Earth densities
Eccentricity of orbit0.086
Escape Velocity 6.6 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt32°
Planetary albedo 0.15
Exospheric Temperature 1.14° K-1271.86° C Earth temperature
Length of year65777.94 Earth days63353.54 Local days
180.09 Earth years
Length of day24.92 hours
Boiling point of water-43.8° Celcius
-46.8° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage 0.1


Planet #11 Statistics
Planet typeRockRock
Low-G, Cold, Airless
Distance from primary star6.9E+09 KM46.189 AU
Mass1.2E+24Kg0.204 Earth masses
Surface gravity318.5 cm/sec20.32 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature-236.2° Celcius
-393.1° Fahrenheit		-250.2° C Earth temperature
-450.3° F Earth temperature
Normal temperature range
NightDay
-240.4° C
-400.7° F		 - -231.8° C
-385.2° F
MinMax
-250.5° C
-418.9° F		 - -222.1° C
-367.9° F
Equatorial radius5058.2 Km0.79 Earth radii
Density2.25 grams/cc0.41 Earth densities
Eccentricity of orbit0.055
Escape Velocity 5.7 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt69°
Planetary albedo 0.15
Exospheric Temperature 0.50° K-1272.50° C Earth temperature
Length of year122925.49 Earth days109851.78 Local days
336.55 Earth years
Length of day26.86 hours
Boiling point of water-52.5° Celcius
-62.6° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage 0.1


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