🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.59 AU - 0.81 AU

Year: 225 Days

Day: 40.8 Hours

Environment

Temp: 154 °C

Axial Tilt: 36.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 104,276,105 km

• M1: 112,198 km (0.053 R)
• M2: 303,384 km (0.108 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.13

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.65 AU - 0.81 AU

Year: 240 Days

Day: 44.3 Hours

Environment

Temp: 92 °C

Axial Tilt: 14.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.5

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.05 AU - 1.55 AU

Year: 571 Days

Day: 29.7 Hours

Environment

Temp: -48 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.84

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 1.22 AU - 1.94 AU

Year: 765 Days

Day: 24.4 Hours

Environment

Temp: -65 °C

Axial Tilt: 26.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.74 AU - 1.76 AU

Year: 891 Days

Day: 17.3 Hours

Environment

Temp: -75 °C

Axial Tilt: 9.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 104,276,105 km

• M1: 44,580 km (0.096 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.76 AU - 2.44 AU

Year: 1172 Days

Day: 23.1 Hours

Environment

Temp: -91 °C

Axial Tilt: 37.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.74

Radius: 0.89

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 2.28 AU - 3.42 AU

Year: 1852 Days

Day: 42.9 Hours

Environment

Temp: -116 °C

Axial Tilt: 36.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 104,276,105 km

• M1: 330,163 km (0.096 R)
• M2: 1,273,227 km (0.07 R)

Asteroid Belt

Center: 7.39 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 11.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 157.1

Radius: 5

Gravity: 6.28 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 11 AU - 12.86 AU

Year: 15865 Days

Day: 22 Hours

Environment

Temp: -189 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 104,276,105 km

• M1: 62,382 km (0.075 R)
• M2: 441,912 km (0.078 R)
• M3: 684,859 km (0.075 R)
• M4: 1,455,438 km (0.086 R)
• M5: 2,197,294 km (0.118 R)
• M6: 3,456,608 km (0.075 R)
• M7: 3,840,477 km (0.078 R)
• M8: 5,473,337 km (0.118 R)
• M9: 5,994,536 km (0.115 R)
• M10: 7,211,066 km (0.117 R)
• M11: 7,403,000 km (0.12 R)
• M12: 9,376,346 km (0.116 R)
• M13: 11,208,620 km (0.108 R)
• M14: 15,499,985 km (0.109 R)
• M15: 18,899,447 km (0.068 R)
• M16: 19,485,721 km (0.115 R)
• M17: 21,554,211 km (0.085 R)
• M18: 23,344,299 km (0.085 R)
• M19: 24,880,819 km (0.105 R)
• M20: 29,892,796 km (0.088 R)
• M21: 31,599,857 km (0.111 R)
• M22: 32,738,447 km (0.095 R)
• M23: 39,079,003 km (0.115 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 865.5

Radius: 7.4

Gravity: 15.81 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 15.45 AU - 16.47 AU

Year: 24548 Days

Day: 18 Hours

Environment

Temp: -202 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 104,276,105 km

• M1: 92,302 km (0.11 R)
• M2: 373,396 km (0.105 R)
• M3: 605,572 km (0.099 R)
• M4: 1,081,593 km (0.061 R)
• M5: 1,599,650 km (0.112 R)
• M6: 2,413,462 km (0.097 R)
• M7: 4,306,773 km (0.086 R)
• M8: 8,449,737 km (0.104 R)
• M9: 11,380,209 km (0.061 R)
• M10: 14,276,574 km (0.099 R)
• M11: 15,342,010 km (0.103 R)
• M12: 15,765,671 km (0.103 R)
• M13: 16,023,428 km (0.109 R)
• M14: 16,371,692 km (0.085 R)
• M15: 18,283,403 km (0.082 R)
• M16: 18,952,255 km (0.12 R)
• M17: 21,057,247 km (0.106 R)
• M18: 22,652,858 km (0.107 R)
• M19: 23,536,083 km (0.079 R)
• M20: 27,422,935 km (0.119 R)
• M21: 27,796,182 km (0.056 R)
• M22: 30,504,502 km (0.091 R)
• M23: 34,238,764 km (0.108 R)
• M24: 41,609,900 km (0.037 R)
• M25: 46,187,595 km (0.094 R)
• M26: 46,893,098 km (0.118 R)
• M27: 48,870,333 km (0.065 R)
• M28: 50,342,825 km (0.069 R)
• M29: 54,152,933 km (0.105 R)
• M30: 56,730,056 km (0.049 R)
• M31: 57,133,671 km (0.113 R)
• M32: 57,946,586 km (0.085 R)
• M33: 60,221,820 km (0.11 R)
• M34: 67,178,420 km (0.109 R)
• M35: 78,838,826 km (0.041 R)
• M36: 83,179,707 km (0.067 R)
• M37: 87,408,091 km (0.026 R)
• M38: 89,030,031 km (0.045 R)
• M39: 90,672,017 km (0.103 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 765

Radius: 6.5

Gravity: 18.11 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 13.79 AU - 22.99 AU

Year: 30363 Days

Day: 18.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 104,276,105 km

• M1: 97,239 km (0.076 R)
• M2: 331,509 km (0.077 R)
• M3: 648,956 km (0.087 R)
• M4: 1,267,692 km (0.117 R)
• M5: 1,503,309 km (0.099 R)
• M6: 1,708,856 km (0.077 R)
• M7: 4,942,115 km (0.062 R)
• M8: 5,575,513 km (0.109 R)
• M9: 5,843,442 km (0.073 R)
• M10: 6,649,775 km (0.1 R)
• M11: 8,539,645 km (0.066 R)
• M12: 12,718,362 km (0.074 R)
• M13: 13,902,429 km (0.114 R)
• M14: 14,901,294 km (0.077 R)
• M15: 19,174,707 km (0.099 R)
• M16: 20,305,667 km (0.107 R)
• M17: 20,727,683 km (0.034 R)
• M18: 21,808,378 km (0.111 R)
• M19: 23,040,166 km (0.112 R)
• M20: 24,673,925 km (0.061 R)
• M21: 28,695,415 km (0.098 R)
• M22: 30,999,820 km (0.07 R)
• M23: 37,216,061 km (0.116 R)
• M24: 38,971,442 km (0.097 R)
• M25: 39,787,349 km (0.086 R)
• M26: 41,116,376 km (0.084 R)
• M27: 44,214,249 km (0.095 R)
• M28: 46,182,059 km (0.102 R)
• M29: 56,071,975 km (0.044 R)
• M30: 56,694,152 km (0.097 R)
• M31: 56,902,542 km (0.104 R)
• M32: 57,741,188 km (0.103 R)
• M33: 59,014,714 km (0.111 R)
• M34: 67,050,813 km (0.08 R)
• M35: 67,986,398 km (0.093 R)
• M36: 68,693,697 km (0.072 R)
• M37: 86,900,206 km (0.035 R)
• M38: 91,691,228 km (0.105 R)
• M39: 95,471,416 km (0.097 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 487 - 19,476 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit