🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.59 AU - 0.59 AU

Year: 293 Days

Day: 25.9 Hours

Environment

Temp: -136 °C

Axial Tilt: 7.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.6

Radius: 11.3

Gravity: 1.97 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.95 AU - 1.19 AU

Year: 715 Days

Day: 8.6 Hours

Environment

Temp: -163 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 32,953,670 km

• M1: 140,472 km (0.101 R)
• M2: 695,032 km (0.116 R)
• M3: 1,170,454 km (0.12 R)
• M4: 1,618,200 km (0.118 R)
• M5: 2,205,970 km (0.114 R)
• M6: 2,754,695 km (0.087 R)
• M7: 3,524,526 km (0.051 R)
• M8: 3,993,366 km (0.108 R)
• M9: 4,446,498 km (0.101 R)
• M10: 5,791,233 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 710.3

Radius: 14.9

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 2.6 AU - 3.24 AU

Year: 3222 Days

Day: 14.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 32,953,670 km

• M1: 185,501 km (0.119 R)
• M2: 731,234 km (0.106 R)
• M3: 1,294,022 km (0.077 R)
• M4: 1,801,607 km (0.087 R)
• M5: 2,429,918 km (0.041 R)
• M6: 2,995,249 km (0.034 R)
• M7: 3,826,115 km (0.044 R)
• M8: 5,343,786 km (0.115 R)
• M9: 6,003,213 km (0.084 R)
• M10: 6,482,375 km (0.119 R)
• M11: 8,661,567 km (0.099 R)
• M12: 9,840,997 km (0.082 R)
• M13: 11,000,081 km (0.096 R)
• M14: 13,927,263 km (0.067 R)
• M15: 14,822,157 km (0.041 R)
• M16: 15,335,727 km (0.115 R)
• M17: 17,623,676 km (0.094 R)
• M18: 19,820,970 km (0.11 R)
• M19: 20,381,962 km (0.107 R)
• M20: 21,405,361 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.9

Radius: 10.3

Gravity: 3.22 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 2.32 AU - 3.6 AU

Year: 3288 Days

Day: 12.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 32,953,670 km

• M1: 130,599 km (0.11 R)
• M2: 535,710 km (0.119 R)
• M3: 1,262,008 km (0.115 R)
• M4: 2,055,624 km (0.057 R)
• M5: 2,760,530 km (0.04 R)
• M6: 3,269,761 km (0.041 R)
• M7: 4,271,019 km (0.104 R)
• M8: 4,625,267 km (0.053 R)
• M9: 6,457,093 km (0.098 R)
• M10: 8,275,305 km (0.113 R)
• M11: 11,018,182 km (0.047 R)
• M12: 13,860,991 km (0.085 R)
• M13: 15,258,085 km (0.104 R)
• M14: 16,340,725 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 292.9

Radius: 12.1

Gravity: 2 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 2.48 AU - 3.98 AU

Year: 3748 Days

Day: 7.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 32,953,670 km

• M1: 150,495 km (0.106 R)
• M2: 595,250 km (0.03 R)
• M3: 983,606 km (0.034 R)
• M4: 1,559,857 km (0.111 R)
• M5: 3,248,667 km (0.083 R)
• M6: 4,033,757 km (0.069 R)
• M7: 5,032,173 km (0.114 R)
• M8: 5,528,539 km (0.077 R)
• M9: 6,348,186 km (0.06 R)
• M10: 6,871,928 km (0.074 R)
• M11: 9,613,608 km (0.078 R)
• M12: 10,418,145 km (0.026 R)
• M13: 11,586,804 km (0.116 R)
• M14: 12,161,110 km (0.037 R)
• M15: 13,058,398 km (0.078 R)
• M16: 15,323,310 km (0.098 R)
• M17: 16,066,213 km (0.041 R)
• M18: 17,570,270 km (0.07 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.9

Radius: 14.7

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 3.87 AU - 5.03 AU

Year: 6061 Days

Day: 6.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 32,953,670 km

• M1: 183,557 km (0.11 R)
• M2: 917,633 km (0.115 R)
• M3: 2,368,733 km (0.074 R)
• M4: 3,061,670 km (0.088 R)
• M5: 6,139,197 km (0.086 R)
• M6: 6,622,698 km (0.071 R)
• M7: 10,154,853 km (0.117 R)
• M8: 11,027,607 km (0.08 R)
• M9: 15,909,584 km (0.118 R)
• M10: 17,832,216 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.4

Radius: 12.6

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.5 AU - 5.64 AU

Year: 6308 Days

Day: 11 Hours

Environment

Temp: -224 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 32,953,670 km

• M1: 156,629 km (0.115 R)
• M2: 650,900 km (0.119 R)
• M3: 1,172,099 km (0.091 R)
• M4: 2,147,477 km (0.073 R)
• M5: 3,518,542 km (0.117 R)
• M6: 4,256,359 km (0.074 R)
• M7: 4,715,175 km (0.046 R)
• M8: 5,349,769 km (0.119 R)
• M9: 6,103,444 km (0.061 R)
• M10: 6,824,206 km (0.088 R)
• M11: 7,748,422 km (0.114 R)
• M12: 8,554,305 km (0.073 R)
• M13: 9,373,055 km (0.07 R)
• M14: 9,801,652 km (0.105 R)
• M15: 12,195,218 km (0.102 R)
• M16: 14,103,938 km (0.072 R)
• M17: 18,774,383 km (0.107 R)
• M18: 20,298,187 km (0.095 R)
• M19: 21,605,074 km (0.026 R)
• M20: 22,506,850 km (0.092 R)
• M21: 24,466,433 km (0.108 R)
• M22: 26,198,178 km (0.03 R)
• M23: 27,746,515 km (0.107 R)
• M24: 30,930,557 km (0.037 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 349 - 12,815 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit