While I'm honored by CNN's link to this page from their article about the new planet discovered around Epsilon Eridani, I feel I should point out that the system shown here is fictional. It was produced by a program of mine called StarGen. |
-- Brons |
Epsilon Eridani | |||||||||||||||||||||||||||
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Stellar charactersistics | |||||||||||||||||||||||||||
Stellar mass | 0.85 solar masses | ||||||||||||||||||||||||||
Stellar luminosity | 0.34 | ||||||||||||||||||||||||||
Age | 5.839 billion years (19.161 billion left on main sequence) | ||||||||||||||||||||||||||
Habitable ecosphere radius | 0.583 AU |
Planetary Overview | |||||
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# | Type | Dist. | Mass | Radius | |
1 | Rock | 0.377 AU | 0.064 EM | 0.403 ER | |
2 | Martian | 0.526 AU | 0.444 EM | 0.767 ER | |
3 | Martian | 0.916 AU | 0.076 EM | 0.427 ER | |
4 | Ice | 1.158 AU | 2.365 EM | 1.321 ER | |
5 | Ice | 1.538 AU | 0.525 EM | 0.810 ER | |
6 | Jovian | 3.081 AU | 76.938 EM | 6.773 ER | |
7 | Jovian | 5.607 AU | 226.769 EM | 9.758 ER | |
8 | Sub-Jovian | 15.003 AU | 2.876 EM | 2.963 ER | |
9 | Rock | 21.499 AU | 0.155 EM | 0.724 ER | |
10 | Sub-Jovian | 25.167 AU | 15.402 EM | 5.047 ER | |
11 | Rock | 45.978 AU | 0.198 EM | 0.785 ER |
Planet #1 Statistics | |||||||
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Planet type | Rock Tidally Locked 1 Face Low-G, Hot, Airless, 1-Face | ||||||
Distance from primary star | 5.6E+07 KM | 0.377 AU | |||||
Mass | 3.8E+23Kg | 0.064 Earth masses | |||||
Surface gravity | 384.0 cm/sec2 | 0.39 Earth gees | |||||
Surface pressure | 0 millibars | 0.000 Earth atmospheres | |||||
Surface temperature | 60.5° Celcius 140.8° Fahrenheit | +46.5° C Earth temperature +83.6° F Earth temperature | |||||
Normal temperature range |
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Equatorial radius | 2573.4 Km | 0.4 Earth radii | |||||
Density | 5.34 grams/cc | 0.97 Earth densities | |||||
Eccentricity of orbit | 0.052 | ||||||
Escape Velocity | 4.4 Km/sec | ||||||
Molecular weight retained | 96.0 and above | Xe | |||||
Axial tilt | 12° | ||||||
Planetary albedo | 0.07 | ||||||
Exospheric Temperature | 3038.80° K | +1765.80° C Earth temperature | |||||
Length of year | 91.85 Earth days | 1.00 Local days | |||||
Length of day | 2204.47 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 | |||||||||||||
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Planet type | Martian Tidally Locked 1 Face Low-G, Cold, Icy, Arid, Cloudy, Thin atmosphere (N2, Ar - unbreathable), 1-Face | ||||||||||||
Distance from primary star | 7.9E+07 KM | 0.526 AU | |||||||||||
Mass | 2.7E+24Kg | 0.444 Earth masses | |||||||||||
Surface gravity | 740.4 cm/sec2 | 0.75 Earth gees | |||||||||||
Surface pressure | 235 millibars | 0.232 Earth atmospheres | |||||||||||
Surface temperature | -19.2° Celcius -2.6° Fahrenheit | -33.2° C Earth temperature -59.8° F Earth temperature | |||||||||||
Normal temperature range |
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Equatorial radius | 4889.1 Km | 0.77 Earth radii | |||||||||||
Density | 5.42 grams/cc | 0.98 Earth densities | |||||||||||
Eccentricity of orbit | 0.072 | ||||||||||||
Escape Velocity | 8.5 Km/sec | ||||||||||||
Molecular weight retained | 13.5 and above | N, O, CH4, NH3, H2O, Ne, N2, CO...
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Axial tilt | 26° | ||||||||||||
Planetary albedo | 0.53 | ||||||||||||
Exospheric Temperature | 1564.94° K | +291.94° C Earth temperature | |||||||||||
Length of year | 151.09 Earth days | 1.00 Local days | |||||||||||
Length of day | 3626.24 hours | ||||||||||||
Boiling point of water | 63.8° Celcius 146.8° Fahrenheit | ||||||||||||
Hydrosphere percentage | 0.0 | ||||||||||||
Cloud cover percentage | 97.3 | ||||||||||||
Ice cover percentage | 31.2 |
Planet #3 Statistics | |||||||||||||
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Planet type | Martian Low-G, Cold, Icy, Arid, Cloudless, Unbreathably thin atmosphere | ||||||||||||
Distance from primary star | 1.4E+08 KM | 0.916 AU | |||||||||||
Mass | 4.5E+23Kg | 0.076 Earth masses | |||||||||||
Surface gravity | 406.8 cm/sec2 | 0.41 Earth gees | |||||||||||
Surface pressure | 7 millibars | 0.007 Earth atmospheres | |||||||||||
Surface temperature | -81.0° Celcius -113.7° Fahrenheit | -95.0° C Earth temperature -170.9° F Earth temperature | |||||||||||
Normal temperature range |
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Equatorial radius | 2724.3 Km | 0.43 Earth radii | |||||||||||
Density | 5.34 grams/cc | 0.97 Earth densities | |||||||||||
Eccentricity of orbit | 0.028 | ||||||||||||
Escape Velocity | 4.7 Km/sec | ||||||||||||
Molecular weight retained | 14.5 and above | O, CH4, NH3, H2O, Ne, N2, CO, NO... | |||||||||||
Axial tilt | 31° | ||||||||||||
Planetary albedo | 0.44 | ||||||||||||
Exospheric Temperature | 516.26° K | -756.74° C Earth temperature | |||||||||||
Length of year | 347.11 Earth days | 108.01 Local days | |||||||||||
Length of day | 77.13 hours | ||||||||||||
Boiling point of water | -0.5° Celcius 31.0° Fahrenheit | ||||||||||||
Hydrosphere percentage | 0.0 | ||||||||||||
Cloud cover percentage | 0.1 | ||||||||||||
Ice cover percentage | 52.0 |
Planet #4 Statistics | |||||||||||||
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Planet type | Ice High-G, Cold, Icy, Arid, Cloudless, Thick atmosphere | ||||||||||||
Distance from primary star | 1.7E+08 KM | 1.158 AU | |||||||||||
Mass | 1.4E+25Kg | 2.365 Earth masses | |||||||||||
Surface gravity | 1329.6 cm/sec2 | 1.36 Earth gees | |||||||||||
Surface pressure | 6667 millibars | 6.580 Earth atmospheres | |||||||||||
Surface temperature | -70.6° Celcius -95.1° Fahrenheit | -84.6° C Earth temperature -152.3° F Earth temperature | |||||||||||
Normal temperature range |
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Equatorial radius | 8422.8 Km | 1.3 Earth radii | |||||||||||
Density | 5.65 grams/cc | 1 Earth densities | |||||||||||
Eccentricity of orbit | 0.098 | ||||||||||||
Escape Velocity | 15.0 Km/sec | ||||||||||||
Molecular weight retained | 1.0 and above | H, H2, He, N, O, CH4, NH3, H2O... | |||||||||||
Axial tilt | 21° | ||||||||||||
Planetary albedo | 0.70 | ||||||||||||
Exospheric Temperature | 322.76° K | -950.24° C Earth temperature | |||||||||||
Length of year | 493.69 Earth days | 892.67 Local days 1.35 Earth years | |||||||||||
Length of day | 13.27 hours | ||||||||||||
Boiling point of water | 160.6° Celcius 321.1° Fahrenheit | ||||||||||||
Hydrosphere percentage | 0.0 | ||||||||||||
Cloud cover percentage | 0.3 | ||||||||||||
Ice cover percentage | 99.4 |
Planet #5 Statistics | |||||||||||||
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Planet type | Ice Low-G, Cold, Icy, Arid, Cloudless, Thin atmosphere | ||||||||||||
Distance from primary star | 2.3E+08 KM | 1.538 AU | |||||||||||
Mass | 3.1E+24Kg | 0.525 Earth masses | |||||||||||
Surface gravity | 784.3 cm/sec2 | 0.80 Earth gees | |||||||||||
Surface pressure | 328 millibars | 0.324 Earth atmospheres | |||||||||||
Surface temperature | -136.9° Celcius -214.4° Fahrenheit | -150.9° C Earth temperature -271.6° F Earth temperature | |||||||||||
Normal temperature range |
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Equatorial radius | 5166.1 Km | 0.81 Earth radii | |||||||||||
Density | 5.43 grams/cc | 0.98 Earth densities | |||||||||||
Eccentricity of orbit | 0.031 | ||||||||||||
Escape Velocity | 9.0 Km/sec | ||||||||||||
Molecular weight retained | 1.5 and above | H2, He, N, O, CH4, NH3, H2O, Ne... | |||||||||||
Axial tilt | 27° | ||||||||||||
Planetary albedo | 0.70 | ||||||||||||
Exospheric Temperature | 183.06° K | -1089.94° C Earth temperature | |||||||||||
Length of year | 755.38 Earth days | 1052.79 Local days 2.07 Earth years | |||||||||||
Length of day | 17.22 hours | ||||||||||||
Boiling point of water | 71.5° Celcius 160.7° Fahrenheit | ||||||||||||
Hydrosphere percentage | 0.0 | ||||||||||||
Cloud cover percentage | 0.0 | ||||||||||||
Ice cover percentage | 100.0 |
Planet #6 Statistics | ||
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Planet type | Jovian | |
Distance from primary star | 4.6E+08 KM | 3.081 AU |
Mass | 4.6E+26Kg | 76.938 Earth masses 15.882 Earth masses dust 61.056 Earth masses gas |
Equatorial radius | 43196.1 Km | 6.8 Earth radii |
Density | 1.36 grams/cc | 0.25 Earth densities |
Eccentricity of orbit | 0.066 | |
Escape Velocity | 37.7 Km/sec | |
Molecular weight retained | 0.0 and above | H, H2, He, N, O, CH4, NH3, H2O... |
Axial tilt | 31° | |
Planetary albedo | 0.50 | |
Exospheric Temperature | 45.59° K | -1227.41° C Earth temperature |
Length of year | 2142.46 Earth days | 5101.52 Local days 5.87 Earth years |
Length of day | 10.08 hours |
Planet #7 Statistics | ||
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Planet type | Jovian | |
Distance from primary star | 8.4E+08 KM | 5.607 AU |
Mass | 1.4E+27Kg | 226.769 Earth masses 24.238 Earth masses dust 202.531 Earth masses gas |
Equatorial radius | 62234.8 Km | 9.8 Earth radii |
Density | 1.34 grams/cc | 0.24 Earth densities |
Eccentricity of orbit | 0.103 | |
Escape Velocity | 53.9 Km/sec | |
Molecular weight retained | 0.0 and above | H, H2, He, N, O, CH4, NH3, H2O... |
Axial tilt | 33° | |
Planetary albedo | 0.50 | |
Exospheric Temperature | 13.77° K | -1259.23° C Earth temperature |
Length of year | 5258.14 Earth days | 14919.40 Local days 14.40 Earth years |
Length of day | 8.46 hours |
Planet #8 Statistics | ||
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Planet type | Sub-Jovian | |
Distance from primary star | 2.2E+09 KM | 15.003 AU |
Mass | 1.7E+25Kg | 2.876 Earth masses 2.249 Earth masses dust 0.627 Earth masses gas |
Equatorial radius | 18898.6 Km | 3 Earth radii |
Density | 0.61 grams/cc | 0.11 Earth densities |
Eccentricity of orbit | 0.075 | |
Escape Velocity | 11.0 Km/sec | |
Molecular weight retained | 0.0 and above | H, H2, He, N, O, CH4, NH3, H2O... |
Axial tilt | 40° | |
Planetary albedo | 0.54 | |
Exospheric Temperature | 1.92° K | -1271.08° C Earth temperature |
Length of year | 23022.95 Earth days | 24227.08 Local days 63.03 Earth years |
Length of day | 22.81 hours |
Planet #9 Statistics | |||||||||||||
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Planet type | Rock Low-G, Cold, Airless | ||||||||||||
Distance from primary star | 3.2E+09 KM | 21.499 AU | |||||||||||
Mass | 9.3E+23Kg | 0.155 Earth masses | |||||||||||
Surface gravity | 289.9 cm/sec2 | 0.30 Earth gees | |||||||||||
Surface pressure | 0 millibars | 0.000 Earth atmospheres | |||||||||||
Surface temperature | -229.8° Celcius -381.7° Fahrenheit | -243.8° C Earth temperature -438.9° F Earth temperature +5.0° C greenhouse effect | |||||||||||
Normal temperature range |
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Equatorial radius | 4619.4 Km | 0.72 Earth radii | |||||||||||
Density | 2.25 grams/cc | 0.41 Earth densities | |||||||||||
Eccentricity of orbit | 0.080 | ||||||||||||
Escape Velocity | 5.2 Km/sec | ||||||||||||
Molecular weight retained | 0.0 and above | H, H2, He, N, O, CH4, NH3, H2O... | |||||||||||
Axial tilt | 27° | ||||||||||||
Planetary albedo | 0.15 | ||||||||||||
Exospheric Temperature | 0.94° K | -1272.06° C Earth temperature | |||||||||||
Length of year | 39493.61 Earth days | 33676.53 Local days 108.13 Earth years | |||||||||||
Length of day | 28.15 hours | ||||||||||||
Boiling point of water | -57.5° Celcius -71.5° Fahrenheit | ||||||||||||
Hydrosphere percentage | 0.0 | ||||||||||||
Cloud cover percentage | 0.0 | ||||||||||||
Ice cover percentage | 0.1 |
Planet #10 Statistics | ||
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Planet type | Sub-Jovian | |
Distance from primary star | 3.8E+09 KM | 25.167 AU |
Mass | 9.2E+25Kg | 15.402 Earth masses 3.383 Earth masses dust 12.019 Earth masses gas |
Equatorial radius | 32188.9 Km | 5 Earth radii |
Density | 0.66 grams/cc | 0.12 Earth densities |
Eccentricity of orbit | 0.059 | |
Escape Velocity | 19.5 Km/sec | |
Molecular weight retained | 0.0 and above | H, H2, He, N, O, CH4, NH3, H2O... |
Axial tilt | 60° | |
Planetary albedo | 0.52 | |
Exospheric Temperature | 0.68° K | -1272.32° C Earth temperature |
Length of year | 50018.98 Earth days | 71511.99 Local days 136.94 Earth years |
Length of day | 16.79 hours |
Planet #11 Statistics | |||||||||||||
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Planet type | Rock Low-G, Cold, Airless | ||||||||||||
Distance from primary star | 6.9E+09 KM | 45.978 AU | |||||||||||
Mass | 1.2E+24Kg | 0.198 Earth masses | |||||||||||
Surface gravity | 315.3 cm/sec2 | 0.32 Earth gees | |||||||||||
Surface pressure | 0 millibars | 0.000 Earth atmospheres | |||||||||||
Surface temperature | -243.5° Celcius -406.3° Fahrenheit | -257.5° C Earth temperature -463.5° F Earth temperature | |||||||||||
Normal temperature range |
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Equatorial radius | 5009.4 Km | 0.79 Earth radii | |||||||||||
Density | 2.25 grams/cc | 0.41 Earth densities | |||||||||||
Eccentricity of orbit | 0.062 | ||||||||||||
Escape Velocity | 5.6 Km/sec | ||||||||||||
Molecular weight retained | 0.0 and above | H, H2, He, N, O, CH4, NH3, H2O... | |||||||||||
Axial tilt | 41° | ||||||||||||
Planetary albedo | 0.15 | ||||||||||||
Exospheric Temperature | 0.20° K | -1272.80° C Earth temperature | |||||||||||
Length of year | 123511.69 Earth days | 109823.02 Local days 338.15 Earth years | |||||||||||
Length of day | 26.99 hours | ||||||||||||
Boiling point of water | -52.9° Celcius -63.2° Fahrenheit | ||||||||||||
Hydrosphere percentage | 0.0 | ||||||||||||
Cloud cover percentage | 0.0 | ||||||||||||
Ice cover percentage | 0.1 |