🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.29

Radius: 1.39

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.46 AU - 0.76 AU

Year: 303 Days

Day: 18.9 Hours

Environment

Temp: -123 °C

Axial Tilt: 15.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 531

Radius: 13.6

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.7 AU - 1.04 AU

Year: 516 Days

Day: 8.6 Hours

Environment

Temp: -161 °C

Axial Tilt: 115 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,708,987 km

• M1: 169,494 km (0.075 R)
• M2: 667,655 km (0.117 R)
• M3: 1,239,269 km (0.114 R)
• M4: 1,746,555 km (0.073 R)
• M5: 2,186,822 km (0.06 R)
• M6: 2,931,071 km (0.028 R)
• M7: 3,574,043 km (0.114 R)
• M8: 4,254,115 km (0.066 R)
• M9: 5,418,584 km (0.086 R)
• M10: 5,908,817 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 127.1

Radius: 14.6

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.05 AU - 1.09 AU

Year: 704 Days

Day: 5.1 Hours

Environment

Temp: -165 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 52,708,987 km

• M1: 181,761 km (0.098 R)
• M2: 637,736 km (0.098 R)
• M3: 1,213,239 km (0.075 R)
• M4: 1,730,847 km (0.071 R)
• M5: 3,479,198 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745.6

Radius: 13.4

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.96 AU - 1.56 AU

Year: 899 Days

Day: 7.5 Hours

Environment

Temp: -167 °C

Axial Tilt: 132 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,708,987 km

• M1: 166,802 km (0.118 R)
• M2: 647,609 km (0.115 R)
• M3: 1,126,173 km (0.118 R)
• M4: 2,397,007 km (0.067 R)
• M5: 2,951,416 km (0.104 R)
• M6: 3,504,181 km (0.062 R)
• M7: 4,695,877 km (0.096 R)
• M8: 5,453,441 km (0.116 R)
• M9: 6,398,899 km (0.107 R)
• M10: 7,026,163 km (0.04 R)
• M11: 7,892,634 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.4

Radius: 13.4

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.75 AU - 2.61 AU

Year: 2047 Days

Day: 9.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,708,987 km

• M1: 166,652 km (0.089 R)
• M2: 584,329 km (0.107 R)
• M3: 1,073,215 km (0.075 R)
• M4: 1,548,787 km (0.113 R)
• M5: 2,311,586 km (0.118 R)
• M6: 3,265,722 km (0.058 R)
• M7: 4,546,878 km (0.112 R)
• M8: 7,672,875 km (0.064 R)
• M9: 10,292,483 km (0.088 R)
• M10: 11,334,283 km (0.065 R)
• M11: 12,683,805 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.9

Radius: 14.5

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.76 AU - 3.56 AU

Year: 3572 Days

Day: 8.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,708,987 km

• M1: 181,013 km (0.094 R)
• M2: 1,356,553 km (0.044 R)
• M3: 2,046,200 km (0.095 R)
• M4: 2,920,300 km (0.053 R)
• M5: 3,650,038 km (0.072 R)
• M6: 4,122,618 km (0.033 R)
• M7: 6,051,383 km (0.111 R)
• M8: 7,460,147 km (0.03 R)
• M9: 7,937,214 km (0.088 R)
• M10: 11,279,380 km (0.071 R)
• M11: 13,733,384 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.6

Radius: 14.3

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 2.85 AU - 3.67 AU

Year: 3742 Days

Day: 7.4 Hours

Environment

Temp: -201 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 52,708,987 km

• M1: 178,171 km (0.068 R)
• M2: 674,088 km (0.059 R)
• M3: 1,263,803 km (0.098 R)
• M4: 1,766,152 km (0.11 R)
• M5: 2,669,424 km (0.109 R)
• M6: 4,127,405 km (0.12 R)
• M7: 4,878,536 km (0.06 R)
• M8: 5,412,002 km (0.099 R)
• M9: 6,065,595 km (0.115 R)
• M10: 7,159,754 km (0.056 R)
• M11: 7,722,242 km (0.056 R)
• M12: 8,518,103 km (0.1 R)
• M13: 9,007,138 km (0.049 R)
• M14: 9,551,974 km (0.093 R)
• M15: 10,196,142 km (0.109 R)
• M16: 12,525,381 km (0.045 R)
• M17: 13,437,330 km (0.091 R)
• M18: 14,988,211 km (0.092 R)
• M19: 16,817,942 km (0.112 R)
• M20: 17,366,966 km (0.075 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.5

Radius: 9.4

Gravity: 8.19 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 5.21 AU - 6.25 AU

Year: 8721 Days

Day: 11.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 52,708,987 km

• M1: 116,986 km (0.114 R)
• M2: 441,314 km (0.102 R)
• M3: 1,440,777 km (0.09 R)
• M4: 2,633,222 km (0.12 R)
• M5: 3,247,620 km (0.083 R)
• M6: 3,980,500 km (0.102 R)
• M7: 4,701,562 km (0.09 R)
• M8: 5,441,922 km (0.117 R)
• M9: 6,695,851 km (0.028 R)
• M10: 8,217,860 km (0.071 R)
• M11: 9,716,232 km (0.113 R)
• M12: 10,353,818 km (0.102 R)
• M13: 11,176,457 km (0.083 R)
• M14: 13,423,417 km (0.09 R)
• M15: 14,401,189 km (0.116 R)
• M16: 14,716,242 km (0.104 R)
• M17: 16,497,952 km (0.108 R)
• M18: 27,121,346 km (0.12 R)
• M19: 32,298,928 km (0.096 R)
• M20: 36,911,330 km (0.101 R)
• M21: 37,502,241 km (0.115 R)
• M22: 42,329,914 km (0.09 R)
• M23: 43,631,266 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 164.5

Radius: 4.3

Gravity: 8.9 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 6.51 AU - 10.03 AU

Year: 15121 Days

Day: 23.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,708,987 km

• M1: 53,556 km (0.103 R)
• M2: 252,970 km (0.116 R)
• M3: 581,936 km (0.038 R)
• M4: 718,818 km (0.053 R)
• M5: 895,642 km (0.113 R)
• M6: 3,169,979 km (0.104 R)
• M7: 4,894,693 km (0.117 R)
• M8: 6,433,756 km (0.101 R)
• M9: 9,948,408 km (0.054 R)
• M10: 13,269,182 km (0.097 R)
• M11: 17,671,099 km (0.04 R)
• M12: 22,143,776 km (0.079 R)
• M13: 23,619,559 km (0.083 R)
• M14: 26,402,977 km (0.093 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 248.4

Radius: 5.7

Gravity: 7.65 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 9.45 AU - 9.91 AU

Year: 19149 Days

Day: 21.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,708,987 km

• M1: 70,909 km (0.067 R)
• M2: 367,712 km (0.066 R)
• M3: 1,747,602 km (0.114 R)
• M4: 4,524,288 km (0.077 R)
• M5: 5,127,916 km (0.102 R)
• M6: 5,928,713 km (0.096 R)
• M7: 12,983,749 km (0.072 R)
• M8: 17,665,414 km (0.113 R)
• M9: 27,632,522 km (0.111 R)
• M10: 30,386,768 km (0.079 R)
• M11: 34,733,185 km (0.07 R)
• M12: 36,433,664 km (0.086 R)
• M13: 40,262,771 km (0.081 R)
• M14: 49,765,228 km (0.079 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 218 - 12,448 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit