🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.9

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.38 AU - 0.64 AU

Year: 235 Days

Day: 22.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 20.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182.4

Radius: 9.2

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.68 AU - 1 AU

Year: 497 Days

Day: 13.6 Hours

Environment

Temp: -155 °C

Axial Tilt: 77.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 23,575,060 km

• M1: 116,836 km (0.106 R)
• M2: 488,886 km (0.106 R)
• M3: 909,555 km (0.1 R)
• M4: 1,317,508 km (0.103 R)
• M5: 2,407,778 km (0.097 R)
• M6: 2,766,065 km (0.085 R)
• M7: 3,418,012 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 63

Radius: 9.1

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.65 AU - 1.05 AU

Year: 506 Days

Day: 10.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 23,575,060 km

• M1: 113,694 km (0.07 R)
• M2: 586,723 km (0.088 R)
• M3: 887,714 km (0.109 R)
• M4: 1,234,332 km (0.049 R)
• M5: 2,033,334 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.2

Radius: 11.2

Gravity: 5.67 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.05 AU - 1.73 AU

Year: 1058 Days

Day: 13.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 23,575,060 km

• M1: 139,276 km (0.08 R)
• M2: 549,473 km (0.081 R)
• M3: 939,175 km (0.071 R)
• M4: 1,288,038 km (0.064 R)
• M5: 1,717,084 km (0.078 R)
• M6: 2,187,719 km (0.106 R)
• M7: 2,657,008 km (0.077 R)
• M8: 3,137,666 km (0.03 R)
• M9: 3,800,085 km (0.081 R)
• M10: 4,190,386 km (0.067 R)
• M11: 4,789,077 km (0.116 R)
• M12: 5,545,443 km (0.036 R)
• M13: 6,698,843 km (0.106 R)
• M14: 7,569,203 km (0.086 R)
• M15: 8,084,419 km (0.03 R)
• M16: 8,678,023 km (0.05 R)
• M17: 9,070,717 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 71.5

Radius: 13.5

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.49 AU - 1.57 AU

Year: 1222 Days

Day: 10.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 23,575,060 km

• M1: 167,849 km (0.103 R)
• M2: 649,255 km (0.062 R)
• M3: 1,079,349 km (0.109 R)
• M4: 2,369,630 km (0.03 R)
• M5: 2,917,009 km (0.108 R)
• M6: 3,729,176 km (0.09 R)
• M7: 4,847,420 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 418.8

Radius: 8.8

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 1.35 AU - 2.15 AU

Year: 1495 Days

Day: 11.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 23,575,060 km

• M1: 109,506 km (0.113 R)
• M2: 386,262 km (0.051 R)
• M3: 772,374 km (0.115 R)
• M4: 1,076,207 km (0.096 R)
• M5: 1,808,638 km (0.117 R)
• M6: 2,123,841 km (0.03 R)
• M7: 2,440,240 km (0.108 R)
• M8: 2,880,208 km (0.065 R)
• M9: 4,086,116 km (0.113 R)
• M10: 4,363,022 km (0.119 R)
• M11: 4,878,087 km (0.112 R)
• M12: 6,505,263 km (0.114 R)
• M13: 7,202,838 km (0.078 R)
• M14: 8,191,231 km (0.1 R)
• M15: 8,605,318 km (0.11 R)
• M16: 9,808,983 km (0.094 R)
• M17: 10,563,704 km (0.048 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.8

Radius: 9.5

Gravity: 6.57 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 1.93 AU - 2.85 AU

Year: 2386 Days

Day: 11.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 23,575,060 km

• M1: 122,969 km (0.114 R)
• M2: 461,659 km (0.108 R)
• M3: 1,329,775 km (0.075 R)
• M4: 1,625,231 km (0.072 R)
• M5: 2,222,127 km (0.057 R)
• M6: 2,600,460 km (0.1 R)
• M7: 3,316,286 km (0.11 R)
• M8: 3,982,894 km (0.114 R)
• M9: 4,420,019 km (0.045 R)
• M10: 4,955,280 km (0.069 R)
• M11: 5,901,337 km (0.1 R)
• M12: 8,887,161 km (0.113 R)
• M13: 10,315,072 km (0.118 R)
• M14: 12,256,254 km (0.078 R)
• M15: 12,840,883 km (0.072 R)
• M16: 13,400,080 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 534.2

Radius: 13.7

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 2.9 AU - 3.74 AU

Year: 3906 Days

Day: 5.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 23,575,060 km

• M1: 183,257 km (0.066 R)
• M2: 1,191,098 km (0.071 R)
• M3: 1,795,324 km (0.109 R)
• M4: 2,232,748 km (0.107 R)
• M5: 3,518,542 km (0.073 R)
• M6: 4,149,845 km (0.114 R)
• M7: 4,643,069 km (0.112 R)
• M8: 6,568,244 km (0.102 R)
• M9: 11,797,587 km (0.087 R)
• M10: 13,075,003 km (0.093 R)
• M11: 19,178,896 km (0.059 R)
• M12: 20,364,010 km (0.047 R)
• M13: 21,930,001 km (0.119 R)
• M14: 22,948,762 km (0.112 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: 165 - 19,402 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit