🌌 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: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.56 AU - 0.78 AU

Year: 360 Days

Day: 24.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 42.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 20,345,308 km

• M1: 34,557 km (0.087 R)
• M2: 150,047 km (0.043 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.9

Radius: 12.6

Gravity: 5.52 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.81 AU - 1.11 AU

Year: 617 Days

Day: 10 Hours

Environment

Temp: -165 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 20,345,308 km

• M1: 156,779 km (0.104 R)
• M2: 611,406 km (0.084 R)
• M3: 1,048,831 km (0.092 R)
• M4: 1,489,546 km (0.085 R)
• M5: 2,334,624 km (0.102 R)
• M6: 3,424,594 km (0.103 R)
• M7: 4,025,529 km (0.072 R)
• M8: 5,641,784 km (0.11 R)
• M9: 6,606,691 km (0.096 R)
• M10: 7,294,093 km (0.03 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.4

Radius: 12.7

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.81 AU - 2.53 AU

Year: 2097 Days

Day: 13.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 20,345,308 km

• M1: 157,975 km (0.055 R)
• M2: 622,926 km (0.072 R)
• M3: 2,083,450 km (0.106 R)
• M4: 3,325,860 km (0.109 R)
• M5: 4,715,026 km (0.103 R)
• M6: 7,046,209 km (0.045 R)
• M7: 7,637,869 km (0.072 R)
• M8: 10,923,038 km (0.04 R)
• M9: 12,508,327 km (0.106 R)
• M10: 14,508,749 km (0.087 R)
• M11: 15,189,869 km (0.048 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.7

Radius: 13.6

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 3.06 AU - 4.12 AU

Year: 4462 Days

Day: 12.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 20,345,308 km

• M1: 169,195 km (0.115 R)
• M2: 866,022 km (0.075 R)
• M3: 1,444,816 km (0.072 R)
• M4: 1,890,169 km (0.106 R)
• M5: 2,387,133 km (0.114 R)
• M6: 2,860,012 km (0.098 R)
• M7: 4,474,323 km (0.036 R)
• M8: 5,011,977 km (0.111 R)
• M9: 5,693,545 km (0.073 R)
• M10: 6,716,795 km (0.079 R)
• M11: 7,302,919 km (0.074 R)
• M12: 7,986,731 km (0.109 R)
• M13: 8,918,576 km (0.1 R)
• M14: 10,450,758 km (0.083 R)
• M15: 10,919,298 km (0.103 R)
• M16: 11,731,315 km (0.1 R)
• M17: 15,040,869 km (0.097 R)
• M18: 18,642,887 km (0.096 R)
• M19: 19,508,759 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 926.6

Radius: 9.1

Gravity: 11.19 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 2.75 AU - 4.55 AU

Year: 4575 Days

Day: 6 Hours

Environment

Temp: -213 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 20,345,308 km

• M1: 115,041 km (0.114 R)
• M2: 403,615 km (0.072 R)
• M3: 809,025 km (0.087 R)
• M4: 1,564,046 km (0.076 R)
• M5: 2,031,240 km (0.085 R)
• M6: 3,009,012 km (0.117 R)
• M7: 3,368,944 km (0.108 R)
• M8: 3,893,733 km (0.092 R)
• M9: 4,497,211 km (0.045 R)
• M10: 4,808,375 km (0.035 R)
• M11: 6,553,733 km (0.114 R)
• M12: 7,372,183 km (0.104 R)
• M13: 10,869,482 km (0.103 R)
• M14: 13,824,938 km (0.119 R)
• M15: 20,129,141 km (0.115 R)
• M16: 21,338,341 km (0.08 R)
• M17: 21,629,758 km (0.075 R)
• M18: 21,923,867 km (0.087 R)
• M19: 23,822,713 km (0.078 R)
• M20: 26,746,155 km (0.069 R)
• M21: 27,170,115 km (0.103 R)
• M22: 28,293,744 km (0.119 R)
• M23: 29,809,470 km (0.098 R)
• M24: 30,449,151 km (0.109 R)
• M25: 31,378,602 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.5

Radius: 9.1

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 3.73 AU - 4.61 AU

Year: 5586 Days

Day: 13.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 20,345,308 km

• M1: 119,828 km (0.083 R)
• M2: 491,429 km (0.085 R)
• M3: 875,896 km (0.069 R)
• M4: 1,187,209 km (0.037 R)
• M5: 2,068,490 km (0.102 R)
• M6: 3,122,108 km (0.112 R)
• M7: 3,462,144 km (0.05 R)
• M8: 3,787,369 km (0.09 R)
• M9: 5,150,355 km (0.11 R)
• M10: 5,943,075 km (0.06 R)
• M11: 6,326,793 km (0.049 R)
• M12: 7,113,528 km (0.092 R)
• M13: 7,609,595 km (0.075 R)
• M14: 8,705,848 km (0.082 R)
• M15: 10,761,772 km (0.042 R)
• M16: 15,344,852 km (0.066 R)
• M17: 15,911,529 km (0.104 R)
• M18: 16,226,432 km (0.101 R)
• M19: 16,868,656 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 84.6

Radius: 12.1

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 4.7 AU - 5.78 AU

Year: 7869 Days

Day: 13 Hours

Environment

Temp: -218 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 20,345,308 km

• M1: 150,495 km (0.105 R)
• M2: 575,054 km (0.109 R)
• M3: 4,711,884 km (0.067 R)
• M4: 6,089,381 km (0.104 R)
• M5: 8,169,091 km (0.098 R)
• M6: 10,724,671 km (0.089 R)
• M7: 11,697,656 km (0.077 R)
• M8: 14,970,857 km (0.103 R)
• M9: 18,468,007 km (0.081 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: 467 - 11,579 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit