🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.97

Radius: 0.99

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.46 AU - 0.6 AU

Year: 245 Days

Day: 17 Hours

Environment

Temp: -120 °C

Axial Tilt: 38.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.5

Radius: 11.5

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.8 AU - 1.18 AU

Year: 626 Days

Day: 14.5 Hours

Environment

Temp: -154 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 51,764,897 km

• M1: 143,016 km (0.071 R)
• M2: 550,520 km (0.1 R)
• M3: 1,201,121 km (0.036 R)
• M4: 2,304,854 km (0.083 R)
• M5: 3,050,899 km (0.115 R)
• M6: 3,439,105 km (0.059 R)
• M7: 3,964,643 km (0.099 R)
• M8: 5,005,694 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 813.4

Radius: 8.4

Gravity: 11.53 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.09 AU - 1.63 AU

Year: 1008 Days

Day: 14.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 51,764,897 km

• M1: 104,868 km (0.077 R)
• M2: 387,010 km (0.107 R)
• M3: 735,722 km (0.058 R)
• M4: 1,013,526 km (0.093 R)
• M5: 1,370,316 km (0.119 R)
• M6: 1,996,982 km (0.101 R)
• M7: 2,445,476 km (0.092 R)
• M8: 2,725,673 km (0.085 R)
• M9: 3,068,252 km (0.085 R)
• M10: 3,651,684 km (0.104 R)
• M11: 4,736,568 km (0.118 R)
• M12: 5,723,315 km (0.088 R)
• M13: 6,491,500 km (0.072 R)
• M14: 6,984,425 km (0.1 R)
• M15: 7,783,278 km (0.117 R)
• M16: 8,530,968 km (0.079 R)
• M17: 9,065,182 km (0.12 R)
• M18: 9,591,467 km (0.115 R)
• M19: 10,045,647 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627

Radius: 12.6

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.77 AU - 1.97 AU

Year: 1626 Days

Day: 5.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 51,764,897 km

• M1: 157,078 km (0.117 R)
• M2: 549,473 km (0.111 R)
• M3: 1,080,845 km (0.117 R)
• M4: 2,061,907 km (0.102 R)
• M5: 4,858,340 km (0.113 R)
• M6: 5,294,269 km (0.065 R)
• M7: 7,937,813 km (0.047 R)
• M8: 8,574,651 km (0.087 R)
• M9: 11,871,937 km (0.106 R)
• M10: 12,512,815 km (0.088 R)
• M11: 13,097,443 km (0.072 R)
• M12: 13,863,983 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 577.2

Radius: 10.4

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.65 AU - 2.29 AU

Year: 1758 Days

Day: 8.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 51,764,897 km

• M1: 129,701 km (0.111 R)
• M2: 501,901 km (0.055 R)
• M3: 877,691 km (0.092 R)
• M4: 1,455,438 km (0.088 R)
• M5: 1,795,773 km (0.049 R)
• M6: 2,213,450 km (0.109 R)
• M7: 2,778,032 km (0.101 R)
• M8: 3,683,249 km (0.109 R)
• M9: 4,556,153 km (0.119 R)
• M10: 5,125,821 km (0.07 R)
• M11: 6,164,330 km (0.116 R)
• M12: 7,176,659 km (0.117 R)
• M13: 8,006,029 km (0.095 R)
• M14: 8,684,156 km (0.094 R)
• M15: 9,146,863 km (0.082 R)
• M16: 10,392,714 km (0.115 R)
• M17: 12,048,164 km (0.046 R)
• M18: 12,938,869 km (0.067 R)
• M19: 13,502,105 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 404

Radius: 9

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.3 AU - 2.4 AU

Year: 2291 Days

Day: 8.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 51,764,897 km

• M1: 111,899 km (0.095 R)
• M2: 425,905 km (0.085 R)
• M3: 880,832 km (0.116 R)
• M4: 1,401,732 km (0.032 R)
• M5: 1,794,875 km (0.076 R)
• M6: 2,224,221 km (0.106 R)
• M7: 2,805,858 km (0.113 R)
• M8: 3,102,211 km (0.075 R)
• M9: 4,504,392 km (0.1 R)
• M10: 6,413,261 km (0.101 R)
• M11: 6,957,498 km (0.09 R)
• M12: 8,529,472 km (0.109 R)
• M13: 10,430,113 km (0.114 R)
• M14: 10,748,457 km (0.084 R)
• M15: 11,330,543 km (0.071 R)
• M16: 12,837,292 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 993

Radius: 12.2

Gravity: 6.67 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 4.98 AU - 7 AU

Year: 9321 Days

Day: 14.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 43.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 51,764,897 km

• M1: 243,097 km (0.116 R)
• M2: 796,160 km (0.114 R)
• M3: 1,463,366 km (0.027 R)
• M4: 1,973,046 km (0.038 R)
• M5: 2,500,080 km (0.112 R)
• M6: 2,983,879 km (0.116 R)
• M7: 3,682,950 km (0.038 R)
• M8: 4,198,315 km (0.095 R)
• M9: 5,175,488 km (0.103 R)
• M10: 6,224,019 km (0.104 R)
• M11: 8,599,185 km (0.101 R)
• M12: 10,170,112 km (0.07 R)
• M13: 23,623,149 km (0.101 R)
• M14: 28,609,546 km (0.061 R)
• M15: 29,984,649 km (0.077 R)
• M16: 31,182,180 km (0.074 R)
• M17: 41,801,235 km (0.087 R)
• M18: 42,475,922 km (0.104 R)
• M19: 45,389,041 km (0.098 R)
• M20: 47,842,895 km (0.115 R)
• M21: 48,878,561 km (0.11 R)
• M22: 50,231,973 km (0.08 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 292 - 13,875 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit