🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.15

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.43 AU - 0.67 AU

Year: 152 Days

Day: 28.8 Hours

Environment

Temp: 177 °C

Axial Tilt: 37 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 63,898,785 km

• M1: 37,250 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.61 AU - 0.87 AU

Year: 237 Days

Day: 22.9 Hours

Environment

Temp: 131 °C

Axial Tilt: 37.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.97

Radius: 0.99

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.42 AU - 1.52 AU

Year: 664 Days

Day: 45.5 Hours

Environment

Temp: -46 °C

Axial Tilt: 4.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,898,785 km

• M1: 97,388 km (0.113 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.35

Radius: 1.13

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.79 AU - 2.31 AU

Year: 1094 Days

Day: 23.4 Hours

Environment

Temp: -78 °C

Axial Tilt: 38.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,898,785 km

• M1: 729,738 km (0.112 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.71

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 2.4 AU - 3.22 AU

Year: 1756 Days

Day: 47.9 Hours

Environment

Temp: -98 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.43 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 997.1

Radius: 9.8

Gravity: 10.38 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 7.9 AU - 8.18 AU

Year: 8498 Days

Day: 12.7 Hours

Environment

Temp: -161 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 63,898,785 km

• M1: 122,221 km (0.075 R)
• M2: 534,663 km (0.109 R)
• M3: 937,530 km (0.071 R)
• M4: 1,344,735 km (0.059 R)
• M5: 1,999,226 km (0.053 R)
• M6: 2,315,326 km (0.081 R)
• M7: 2,747,664 km (0.109 R)
• M8: 3,233,408 km (0.067 R)
• M9: 3,801,581 km (0.105 R)
• M10: 5,010,033 km (0.089 R)
• M11: 5,668,263 km (0.076 R)
• M12: 8,210,530 km (0.043 R)
• M13: 9,316,207 km (0.064 R)
• M14: 10,362,794 km (0.062 R)
• M15: 12,452,826 km (0.088 R)
• M16: 16,513,211 km (0.061 R)
• M17: 17,229,935 km (0.073 R)
• M18: 17,967,303 km (0.113 R)
• M19: 21,379,480 km (0.109 R)
• M20: 22,490,544 km (0.063 R)
• M21: 23,104,494 km (0.068 R)
• M22: 23,729,663 km (0.086 R)
• M23: 29,247,132 km (0.092 R)
• M24: 31,153,009 km (0.094 R)
• M25: 41,280,485 km (0.08 R)
• M26: 47,725,012 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.6

Radius: 13.3

Gravity: 5.17 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 8.25 AU - 13.71 AU

Year: 13563 Days

Day: 12.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 63,898,785 km

• M1: 194,776 km (0.086 R)
• M2: 762,800 km (0.066 R)
• M3: 1,977,684 km (0.083 R)
• M4: 2,745,719 km (0.108 R)
• M5: 4,742,701 km (0.098 R)
• M6: 5,402,278 km (0.11 R)
• M7: 7,754,555 km (0.087 R)
• M8: 8,622,073 km (0.115 R)
• M9: 14,168,714 km (0.106 R)
• M10: 15,914,221 km (0.037 R)
• M11: 16,526,675 km (0.059 R)
• M12: 27,379,253 km (0.055 R)
• M13: 27,816,976 km (0.092 R)
• M14: 30,308,828 km (0.119 R)
• M15: 39,224,113 km (0.106 R)
• M16: 40,484,026 km (0.094 R)
• M17: 49,258,390 km (0.106 R)
• M18: 52,052,130 km (0.085 R)
• M19: 53,915,073 km (0.111 R)
• M20: 61,438,200 km (0.116 R)
• M21: 63,709,694 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 346.7

Radius: 6.5

Gravity: 8.21 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 14.02 AU - 15.96 AU

Year: 21635 Days

Day: 19.3 Hours

Environment

Temp: -189 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 63,898,785 km

• M1: 83,326 km (0.066 R)
• M2: 417,079 km (0.082 R)
• M3: 630,705 km (0.093 R)
• M4: 3,555,044 km (0.065 R)
• M5: 4,415,232 km (0.081 R)
• M6: 5,119,538 km (0.1 R)
• M7: 5,370,115 km (0.078 R)
• M8: 6,791,594 km (0.105 R)
• M9: 8,058,089 km (0.086 R)
• M10: 10,468,560 km (0.105 R)
• M11: 11,591,142 km (0.044 R)
• M12: 14,853,124 km (0.031 R)
• M13: 16,038,388 km (0.056 R)
• M14: 16,888,852 km (0.107 R)
• M15: 17,606,772 km (0.041 R)
• M16: 19,882,754 km (0.077 R)
• M17: 20,147,243 km (0.109 R)
• M18: 27,111,921 km (0.105 R)
• M19: 27,328,389 km (0.107 R)
• M20: 28,539,983 km (0.105 R)
• M21: 30,365,825 km (0.063 R)
• M22: 34,501,308 km (0.1 R)
• M23: 36,176,804 km (0.085 R)
• M24: 42,105,218 km (0.082 R)
• M25: 42,833,910 km (0.046 R)
• M26: 48,013,885 km (0.056 R)
• M27: 51,082,736 km (0.095 R)
• M28: 56,719,434 km (0.054 R)
• M29: 58,145,850 km (0.064 R)
• M30: 63,135,986 km (0.107 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 266 - 17,942 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit