40 Eridani A
15 Planets (size proportional to Sqrt(Radius))
Sun Rock Rock Terrestrial Martian Ice Ice Sub-Jovian Jovian Jovian Martian Sub-Jovian Rock Rock Asteroids Asteroids See
Key
Stellar charactersistics
Stellar mass 0.75 solar masses
Stellar luminosity 0.38
Age 1.413 billion years
(18.324 billion left on main sequence)
Habitable ecosphere radius 0.616 AU

Planetary Overview
#TypeDist.MassRadius
1 Rock Rock 0.305 AU 0.075 EM 0.426 ER
2 Rock Rock 0.482 AU 0.043 EM 0.354 ER
3 Terrestrial Terrestrial 0.580 AU 0.346 EM 0.706 ER
4 Martian Martian 0.746 AU 0.184 EM 0.573 ER
5 Ice Ice 1.227 AU 0.508 EM 0.801 ER
6 Ice Ice 1.636 AU 1.149 EM 1.046 ER
7 Sub-Jovian Sub-Jovian 2.568 AU 12.174 EM 3.878 ER
8 Jovian Jovian 3.846 AU 130.079 EM 8.004 ER
9 Jovian Jovian 11.715 AU 231.555 EM 10.391 ER
10 Martian Martian 15.025 AU 0.730 EM 1.203 ER
11 Sub-Jovian Sub-Jovian 29.462 AU 6.689 EM 3.991 ER
12 Rock Rock 54.254 AU 0.008 EM 0.270 ER
13 Rock Rock 67.170 AU 0.055 EM 0.515 ER
14 Asteroids Asteroids 113.514 AU 0.001 EM 0.125 ER
15 Asteroids Asteroids 119.973 AU 0.000 EM 0.037 ER

Planet #1 Statistics
Planet typeRockRock
Tidally Locked 1 Face
Low-G, Hot, Airless, 1-Face
Distance from primary star4.6E+07 KM0.305 AU
Mass4.5E+23Kg0.075 Earth masses
Surface gravity406.1 cm/sec20.41 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature108.6° Celcius
227.4° Fahrenheit		+94.6° C Earth temperature
+170.2° F Earth temperature
Normal temperature range
MinMax
-213.5° C
-352.3° F		 - 295.5° C
563.8° F
Equatorial radius2719.9 Km0.43 Earth radii
Density5.34 grams/cc0.97 Earth densities
Eccentricity of orbit0.010
Escape Velocity 4.7 Km/sec
Molecular weight retained141.4 and above
Axial tilt13°
Planetary albedo 0.07
Exospheric Temperature5208.57° K+3935.57° C Earth temperature
Length of year70.96 Earth days1.00 Local days
Length of day1702.93 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
Resonant Spin Locked
Low-G, Hot, Airless, 1-Face
Distance from primary star7.2E+07 KM0.482 AU
Mass2.6E+23Kg0.043 Earth masses
Surface gravity336.5 cm/sec20.34 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature 30.5° Celcius
87.0° Fahrenheit		+16.5° C Earth temperature
+29.8° F Earth temperature
Normal temperature range
MinMax
-231.6° C
-384.9° F		 - 197.3° C
387.2° F
Equatorial radius2258.0 Km0.35 Earth radii
Density5.33 grams/cc0.97 Earth densities
Eccentricity of orbit0.118
Escape Velocity 3.9 Km/sec
Molecular weight retained82.3 and aboveKr, Xe
Axial tilt18°
Planetary albedo 0.07
Exospheric Temperature2086.11° K+813.11° C Earth temperature
Length of year140.94 Earth days1.27 Local days
Length of day2666.34 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 typeTerrestrialTerrestrial
Low-G, Cold, Arid, Few clouds, Thin atmosphere (O2 - breathable)
Distance from primary star8.7E+07 KM0.580 AU
Mass2.1E+24Kg0.346 Earth masses
Surface gravity679.9 cm/sec20.69 Earth gees
Surface pressure 161 millibars0.159 Earth atmospheres
Surface temperature 2.4° Celcius
36.4° Fahrenheit		-11.6° C Earth temperature
-20.8° F Earth temperature
Normal temperature range
NightDay
-22.3° C
-8.2° F		 - 24.9° C
76.9° F
MinMax
-48.3° C
-55.0° F		 - 50.3° C
122.5° F
Equatorial radius4503.6 Km0.71 Earth radii
Density5.40 grams/cc0.98 Earth densities
Eccentricity of orbit0.006
Escape Velocity 7.8 Km/sec
Molecular weight retained14.1 and aboveO, CH4, NH3, H2O, Ne, N2, CO, NO...
Oxygen 99.2%  160 mb (ipp: 98) 
Argon  0.7%  1 mb (ipp: 1) 
CarbonDioxide  0.1%  0 mb (ipp: 0) 
Axial tilt25°
Planetary albedo 0.26
Exospheric Temperature1436.70° K+163.70° C Earth temperature
Length of year186.42 Earth days104.74 Local days
Length of day42.72 hours
Boiling point of water55.6° Celcius
132.0° Fahrenheit
Hydrosphere percentage21.9
Cloud cover percentage30.4
Ice cover percentage 9.0


Planet #4 Statistics
Planet typeMartianMartian
Low-G, Cold, Icy, Arid, Cloudless, Unbreathably thin atmosphere
Distance from primary star1.1E+08 KM0.746 AU
Mass1.1E+24Kg0.184 Earth masses
Surface gravity548.7 cm/sec20.56 Earth gees
Surface pressure 46 millibars0.045 Earth atmospheres
Surface temperature-66.9° Celcius
-88.5° Fahrenheit		-80.9° C Earth temperature
-145.7° F Earth temperature
Normal temperature range
NightDay
-84.4° C
-119.9° F		 - -50.1° C
-58.1° F
MinMax
-109.7° C
-165.4° F		 - -25.7° C
-14.2° F
Equatorial radius3655.8 Km0.57 Earth radii
Density5.37 grams/cc0.97 Earth densities
Eccentricity of orbit0.017
Escape Velocity 6.3 Km/sec
Molecular weight retained13.0 and aboveN, O, CH4, NH3, H2O, Ne, N2, CO...
Axial tilt23°
Planetary albedo 0.59
Exospheric Temperature868.99° K-404.01° C Earth temperature
Length of year271.81 Earth days250.92 Local days
Length of day26.00 hours
Boiling point of water30.6° Celcius
87.1° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.7
Ice cover percentage79.5


Planet #5 Statistics
Planet typeIceIce
Low-G, Cold, Icy, Arid, Cloudless, Thin atmosphere
Distance from primary star1.8E+08 KM1.227 AU
Mass3E+24Kg0.508 Earth masses
Surface gravity775.3 cm/sec20.79 Earth gees
Surface pressure 348 millibars0.343 Earth atmospheres
Surface temperature-116.0° Celcius
-176.7° Fahrenheit		-130.0° C Earth temperature
-233.9° F Earth temperature
Normal temperature range
NightDay
-120.5° C
-184.9° F		 - -111.6° C
-169.0° F
MinMax
-143.2° C
-225.7° F		 - -90.7° C
-131.3° F
Equatorial radius5109.9 Km0.8 Earth radii
Density5.43 grams/cc0.98 Earth densities
Eccentricity of orbit0.079
Escape Velocity 8.9 Km/sec
Molecular weight retained 2.4 and aboveHe, N, O, CH4, NH3, H2O, Ne, N2...
Axial tilt24°
Planetary albedo 0.70
Exospheric Temperature321.46° K-951.54° C Earth temperature
Length of year573.04 Earth days795.33 Local days
1.57 Earth years
Length of day17.29 hours
Boiling point of water72.9° Celcius
163.2° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.1
Ice cover percentage100.0


Planet #6 Statistics
Planet typeIceIce
Cold, Icy, Arid, Cloudless, Normal atmosphere
Distance from primary star2.4E+08 KM1.636 AU
Mass6.9E+24Kg1.149 Earth masses
Surface gravity1028.9 cm/sec21.05 Earth gees
Surface pressure 1782 millibars1.759 Earth atmospheres
Surface temperature-126.1° Celcius
-194.9° Fahrenheit		-140.1° C Earth temperature
-252.1° F Earth temperature
Normal temperature range
NightDay
-127.8° C
-198.0° F		 - -124.4° C
-191.9° F
MinMax
-143.6° C
-226.6° F		 - -109.8° C
-165.7° F
Equatorial radius6672.9 Km1 Earth radii
Density5.52 grams/cc1 Earth densities
Eccentricity of orbit0.078
Escape Velocity11.7 Km/sec
Molecular weight retained 0.8 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt22°
Planetary albedo 0.70
Exospheric Temperature180.69° K-1092.31° C Earth temperature
Length of year882.70 Earth days1417.29 Local days
2.42 Earth years
Length of day14.95 hours
Boiling point of water116.5° Celcius
241.7° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage100.0


Planet #7 Statistics
Planet typeSub-JovianSub-Jovian
Distance from primary star3.8E+08 KM2.568 AU
Mass7.3E+25Kg12.174 Earth masses
6.265 Earth masses dust
5.909 Earth masses gas
Equatorial radius24734.3 Km3.9 Earth radii
Density1.15 grams/cc0.21 Earth densities
Eccentricity of orbit0.017
Escape Velocity19.8 Km/sec
Molecular weight retained 0.2 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt33°
Planetary albedo 0.53
Exospheric Temperature 73.35° K-1199.65° C Earth temperature
Length of year1735.58 Earth days2870.95 Local days
4.75 Earth years
Length of day14.51 hours


Planet #8 Statistics
Planet typeJovianJovian
Distance from primary star5.8E+08 KM3.846 AU
Mass7.8E+26Kg130.079 Earth masses
21.913 Earth masses dust
108.166 Earth masses gas
Equatorial radius51047.7 Km8 Earth radii
Density1.40 grams/cc0.25 Earth densities
Eccentricity of orbit0.217
Escape Velocity45.1 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt38°
Planetary albedo 0.48
Exospheric Temperature 32.70° K-1240.30° C Earth temperature
Length of year3180.53 Earth days8332.75 Local days
8.71 Earth years
Length of day9.16 hours


Planet #9 Statistics
Planet typeJovianJovian
Distance from primary star1.8E+09 KM11.715 AU
Mass1.4E+27Kg231.555 Earth masses
19.154 Earth masses dust
212.401 Earth masses gas
Equatorial radius66272.6 Km10 Earth radii
Density1.14 grams/cc0.21 Earth densities
Eccentricity of orbit0.050
Escape Velocity52.8 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt51°
Planetary albedo 0.47
Exospheric Temperature 3.52° K-1269.48° C Earth temperature
Length of year16904.52 Earth days45515.27 Local days
46.28 Earth years
Length of day8.91 hours


Planet #10 Statistics
Planet typeMartianMartian
Low-G, Cold, Arid, Cloudless, Unbreathably thin atmosphere
Distance from primary star2.2E+09 KM15.025 AU
Mass4.4E+24Kg0.730 Earth masses
Surface gravity494.8 cm/sec20.50 Earth gees
Surface pressure 1 millibars0.001 Earth atmospheres
Surface temperature-219.5° Celcius
-363.0° Fahrenheit		-233.5° C Earth temperature
-420.2° F Earth temperature
Normal temperature range
NightDay
-224.6° C
-372.2° F		 - -214.3° C
-353.8° F
MinMax
-240.7° C
-401.3° F		 - -199.1° C
-326.4° F
Equatorial radius7671.8 Km1.2 Earth radii
Density2.31 grams/cc0.42 Earth densities
Eccentricity of orbit0.080
Escape Velocity 8.7 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt47°
Planetary albedo 0.15
Exospheric Temperature 2.14° K-1270.86° C Earth temperature
Length of year24562.60 Earth days27361.09 Local days
67.25 Earth years
Length of day21.55 hours
Boiling point of water-23.1° Celcius
-9.5° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage 0.1


Planet #11 Statistics
Planet typeSub-JovianSub-Jovian
Distance from primary star4.4E+09 KM29.462 AU
Mass4E+25Kg6.689 Earth masses
1.917 Earth masses dust
4.772 Earth masses gas
Equatorial radius25454.1 Km4 Earth radii
Density0.58 grams/cc0.1 Earth densities
Eccentricity of orbit0.109
Escape Velocity14.5 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt37°
Planetary albedo 0.51
Exospheric Temperature 0.56° K-1272.44° C Earth temperature
Length of year67445.31 Earth days80362.07 Local days
184.65 Earth years
Length of day20.14 hours


Planet #12 Statistics
Planet typeRockRock
Low-G, Cold, Airless
Distance from primary star8.1E+09 KM54.254 AU
Mass4.7E+22Kg0.008 Earth masses
Surface gravity106.7 cm/sec20.11 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature-245.2° Celcius
-409.3° Fahrenheit		-259.2° C Earth temperature
-466.5° F Earth temperature
Normal temperature range
MinMax
-259.3° C
-434.7° F		 - -230.2° C
-382.3° F
Equatorial radius1723.0 Km0.27 Earth radii
Density2.22 grams/cc0.4 Earth densities
Eccentricity of orbit0.048
Escape Velocity 1.9 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt67°
Planetary albedo 0.15
Exospheric Temperature 0.16° K-1272.84° C Earth temperature
Length of year168543.66 Earth days87201.82 Local days
461.44 Earth years
Length of day46.39 hours
Boiling point of water-100.4° Celcius
-148.7° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage 0.0


Planet #13 Statistics
Planet typeRockRock
Low-G, Cold, Airless
Distance from primary star1E+10 KM67.170 AU
Mass3.3E+23Kg0.055 Earth masses
Surface gravity204.5 cm/sec20.21 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature-248.0° Celcius
-414.4° Fahrenheit		-262.0° C Earth temperature
-471.6° F Earth temperature
Normal temperature range
NightDay
-251.3° C
-420.4° F		 - -244.3° C
-407.8° F
MinMax
-262.2° C
-440.0° F		 - -232.2° C
-385.9° F
Equatorial radius3283.2 Km0.51 Earth radii
Density2.23 grams/cc0.4 Earth densities
Eccentricity of orbit0.062
Escape Velocity 3.7 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt54°
Planetary albedo 0.15
Exospheric Temperature 0.11° K-1272.89° C Earth temperature
Length of year232182.06 Earth days166283.95 Local days
635.67 Earth years
Length of day33.51 hours
Boiling point of water-74.0° Celcius
-101.2° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage 0.1


Planet #14 Statistics
Planet typeAsteroidsAsteroids
Low-G, Cold, Airless
Distance from primary star1.7E+10 KM113.514 AU
Mass4.7E+21Kg0.001 Earth masses
Surface gravity49.2 cm/sec20.05 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature-253.8° Celcius
-424.9° Fahrenheit		-267.8° C Earth temperature
-482.1° F Earth temperature
Normal temperature range
NightDay
-258.2° C
-432.8° F		 - -248.9° C
-416.0° F
MinMax
-267.0° C
-448.7° F		 - -236.4° C
-393.5° F
Equatorial radius795.7 Km0.12 Earth radii
Density2.21 grams/cc0.4 Earth densities
Eccentricity of orbit0.092
Escape Velocity 0.9 Km/sec
Molecular weight retained 0.0 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt53°
Planetary albedo 0.15
Exospheric Temperature 0.04° K-1272.96° C Earth temperature
Length of year510082.10 Earth days179195.71 Local days
1396.51 Earth years
Length of day68.32 hours
Boiling point of water-124.1° Celcius
-191.3° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage 0.0


Planet #15 Statistics
Planet typeAsteroidsAsteroids
Low-G, Cold, Airless
Distance from primary star1.8E+10 KM119.973 AU
Mass1.2E+20Kg0.000 Earth masses
Surface gravity14.7 cm/sec20.02 Earth gees
Surface pressure 0 millibars0.000 Earth atmospheres
Surface temperature-254.3° Celcius
-425.8° Fahrenheit		-268.3° C Earth temperature
-483.0° F Earth temperature
Normal temperature range
NightDay
-260.7° C
-437.2° F		 - -247.1° C
-412.8° F
MinMax
-267.4° C
-449.3° F		 - -235.0° C
-391.0° F
Equatorial radius238.0 Km0.037 Earth radii
Density2.21 grams/cc0.4 Earth densities
Eccentricity of orbit0.020
Escape Velocity 0.3 Km/sec
Molecular weight retained 0.3 and aboveH, H2, He, N, O, CH4, NH3, H2O...
Axial tilt50°
Planetary albedo 0.15
Exospheric Temperature 0.03° K-1272.97° C Earth temperature
Length of year554235.36 Earth days106473.81 Local days
1517.39 Earth years
Length of day124.93 hours
Boiling point of water-150.3° Celcius
-238.6° Fahrenheit
Hydrosphere percentage 0.0
Cloud cover percentage 0.0
Ice cover percentage 0.0


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