🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.69

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.63 AU - 0.71 AU

Year: 360 Days

Day: 36 Hours

Environment

Temp: -137 °C

Axial Tilt: 102.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 81,465,533 km

• M1: 204,650 km (0.09 R)
• M2: 709,842 km (0.087 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 267

Radius: 9.2

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.62 AU - 0.74 AU

Year: 368 Days

Day: 14.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 81,465,533 km

• M1: 114,442 km (0.077 R)
• M2: 438,920 km (0.049 R)
• M3: 781,499 km (0.062 R)
• M4: 1,137,093 km (0.069 R)
• M5: 1,674,748 km (0.109 R)
• M6: 1,981,573 km (0.12 R)
• M7: 2,326,097 km (0.112 R)
• M8: 2,623,647 km (0.112 R)
• M9: 2,937,205 km (0.105 R)
• M10: 3,326,608 km (0.078 R)
• M11: 3,651,684 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 587.5

Radius: 10.1

Gravity: 5.76 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.09 AU - 1.27 AU

Year: 841 Days

Day: 13.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 81,465,533 km

• M1: 125,662 km (0.11 R)
• M2: 479,312 km (0.095 R)
• M3: 986,299 km (0.074 R)
• M4: 1,622,389 km (0.117 R)
• M5: 2,149,273 km (0.038 R)
• M6: 2,775,190 km (0.082 R)
• M7: 3,222,189 km (0.03 R)
• M8: 3,588,554 km (0.077 R)
• M9: 4,198,315 km (0.05 R)
• M10: 5,342,140 km (0.097 R)
• M11: 5,936,941 km (0.051 R)
• M12: 6,281,465 km (0.107 R)
• M13: 6,856,220 km (0.085 R)
• M14: 7,629,491 km (0.11 R)
• M15: 7,988,676 km (0.065 R)
• M16: 8,434,478 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 628.1

Radius: 10.7

Gravity: 5.49 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 1.54 AU - 2.04 AU

Year: 1571 Days

Day: 8.6 Hours

Environment

Temp: -191 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 81,465,533 km

• M1: 133,142 km (0.091 R)
• M2: 552,615 km (0.09 R)
• M3: 905,217 km (0.102 R)
• M4: 1,491,640 km (0.102 R)
• M5: 2,031,689 km (0.099 R)
• M6: 2,391,172 km (0.052 R)
• M7: 2,890,380 km (0.084 R)
• M8: 3,586,908 km (0.112 R)
• M9: 4,354,345 km (0.056 R)
• M10: 4,897,685 km (0.097 R)
• M11: 6,727,117 km (0.078 R)
• M12: 7,373,978 km (0.081 R)
• M13: 7,920,908 km (0.064 R)
• M14: 9,065,332 km (0.045 R)
• M15: 10,183,426 km (0.041 R)
• M16: 11,826,310 km (0.032 R)
• M17: 12,499,949 km (0.086 R)
• M18: 13,041,494 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.8

Radius: 12.4

Gravity: 5.77 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.13 AU - 3.39 AU

Year: 3008 Days

Day: 12 Hours

Environment

Temp: -190 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 81,465,533 km

• M1: 154,235 km (0.091 R)
• M2: 687,851 km (0.096 R)
• M3: 1,127,669 km (0.114 R)
• M4: 1,807,441 km (0.029 R)
• M5: 2,348,836 km (0.078 R)
• M6: 2,962,935 km (0.112 R)
• M7: 3,701,949 km (0.087 R)
• M8: 4,245,737 km (0.082 R)
• M9: 4,794,761 km (0.104 R)
• M10: 6,233,145 km (0.11 R)
• M11: 6,791,743 km (0.087 R)
• M12: 8,214,269 km (0.041 R)
• M13: 8,959,566 km (0.047 R)
• M14: 9,788,039 km (0.106 R)
• M15: 12,628,005 km (0.091 R)
• M16: 14,012,683 km (0.083 R)
• M17: 16,194,418 km (0.108 R)
• M18: 18,593,968 km (0.103 R)
• M19: 19,816,033 km (0.113 R)
• M20: 21,221,505 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 865.1

Radius: 12

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 2.38 AU - 3.2 AU

Year: 3057 Days

Day: 9.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 81,465,533 km

• M1: 150,196 km (0.089 R)
• M2: 584,030 km (0.117 R)
• M3: 1,004,251 km (0.096 R)
• M4: 1,611,169 km (0.107 R)
• M5: 2,249,952 km (0.083 R)
• M6: 2,914,765 km (0.038 R)
• M7: 3,453,317 km (0.091 R)
• M8: 4,408,051 km (0.071 R)
• M9: 4,972,035 km (0.068 R)
• M10: 7,176,060 km (0.106 R)
• M11: 7,757,846 km (0.109 R)
• M12: 9,312,916 km (0.053 R)
• M13: 9,770,985 km (0.031 R)
• M14: 11,450,969 km (0.082 R)
• M15: 12,246,381 km (0.102 R)
• M16: 12,890,250 km (0.099 R)
• M17: 15,962,542 km (0.1 R)
• M18: 16,453,821 km (0.116 R)
• M19: 17,238,013 km (0.091 R)
• M20: 17,988,396 km (0.1 R)
• M21: 19,430,968 km (0.074 R)
• M22: 22,138,690 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629.2

Radius: 13.2

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2.3 AU - 3.3 AU

Year: 3074 Days

Day: 10.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 81,465,533 km

• M1: 164,258 km (0.113 R)
• M2: 578,645 km (0.05 R)
• M3: 2,019,721 km (0.118 R)
• M4: 2,435,154 km (0.103 R)
• M5: 3,211,118 km (0.078 R)
• M6: 4,188,142 km (0.117 R)
• M7: 4,804,036 km (0.084 R)
• M8: 6,054,226 km (0.05 R)
• M9: 7,051,445 km (0.094 R)
• M10: 7,542,425 km (0.065 R)
• M11: 8,662,315 km (0.063 R)
• M12: 11,107,791 km (0.109 R)
• M13: 13,325,131 km (0.036 R)
• M14: 14,367,529 km (0.028 R)
• M15: 15,310,744 km (0.097 R)
• M16: 16,400,863 km (0.113 R)
• M17: 19,441,590 km (0.118 R)
• M18: 19,982,536 km (0.104 R)
• M19: 21,031,965 km (0.072 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 747.3

Radius: 6

Gravity: 20.76 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 9.07 AU - 11.23 AU

Year: 21213 Days

Day: 18.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 81,465,533 km

• M1: 74,649 km (0.119 R)
• M2: 317,596 km (0.116 R)
• M3: 525,986 km (0.067 R)
• M4: 989,440 km (0.03 R)
• M5: 1,185,713 km (0.116 R)
• M6: 1,408,314 km (0.119 R)
• M7: 2,080,308 km (0.085 R)
• M8: 2,522,818 km (0.106 R)
• M9: 3,301,924 km (0.047 R)
• M10: 3,840,477 km (0.055 R)
• M11: 4,366,762 km (0.102 R)
• M12: 4,683,161 km (0.073 R)
• M13: 5,441,473 km (0.119 R)
• M14: 5,891,912 km (0.041 R)
• M15: 6,455,896 km (0.086 R)
• M16: 6,820,466 km (0.061 R)
• M17: 9,417,635 km (0.116 R)
• M18: 12,678,270 km (0.084 R)
• M19: 14,215,538 km (0.057 R)
• M20: 14,444,871 km (0.106 R)
• M21: 16,705,744 km (0.084 R)
• M22: 17,305,781 km (0.054 R)
• M23: 21,112,149 km (0.06 R)
• M24: 21,813,314 km (0.117 R)
• M25: 23,367,935 km (0.064 R)
• M26: 34,686,809 km (0.06 R)
• M27: 39,748,154 km (0.104 R)
• M28: 41,746,782 km (0.089 R)
• M29: 42,374,943 km (0.071 R)
• M30: 52,751,949 km (0.116 R)
• M31: 56,874,418 km (0.07 R)
• M32: 58,817,245 km (0.105 R)
• M33: 76,679,081 km (0.032 R)
• M34: 77,620,950 km (0.032 R)
• M35: 78,570,447 km (0.088 R)
• M36: 80,492,780 km (0.062 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 326 - 12,498 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit