🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.71

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.53 AU - 0.55 AU

Year: 256 Days

Day: 39.5 Hours

Environment

Temp: -118 °C

Axial Tilt: 48.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.61

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.51 AU - 0.77 AU

Year: 331 Days

Day: 46.1 Hours

Environment

Temp: -139 °C

Axial Tilt: 13.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 223

Radius: 10.8

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.7 AU - 0.92 AU

Year: 471 Days

Day: 9 Hours

Environment

Temp: -155 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 24,638,321 km

• M1: 134,488 km (0.074 R)
• M2: 479,461 km (0.044 R)
• M3: 823,387 km (0.111 R)
• M4: 1,220,868 km (0.074 R)
• M5: 1,568,833 km (0.08 R)
• M6: 2,234,693 km (0.1 R)
• M7: 2,810,944 km (0.1 R)
• M8: 3,210,819 km (0.079 R)
• M9: 3,982,146 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.1

Radius: 14.8

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.84 AU - 1.2 AU

Year: 665 Days

Day: 11.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 24,638,321 km

• M1: 184,604 km (0.101 R)
• M2: 719,865 km (0.05 R)
• M3: 1,360,742 km (0.077 R)
• M4: 2,101,551 km (0.104 R)
• M5: 2,737,342 km (0.084 R)
• M6: 3,359,669 km (0.106 R)
• M7: 4,642,022 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 264.7

Radius: 11.1

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.02 AU - 1.16 AU

Year: 735 Days

Day: 9.4 Hours

Environment

Temp: -164 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 24,638,321 km

• M1: 138,528 km (0.094 R)
• M2: 732,282 km (0.086 R)
• M3: 1,155,943 km (0.099 R)
• M4: 1,656,497 km (0.111 R)
• M5: 2,037,074 km (0.111 R)
• M6: 2,457,444 km (0.118 R)
• M7: 2,990,013 km (0.075 R)
• M8: 3,390,935 km (0.085 R)
• M9: 3,840,626 km (0.099 R)
• M10: 4,516,958 km (0.104 R)
• M11: 5,238,618 km (0.05 R)
• M12: 5,601,991 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 615.6

Radius: 14.5

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 1.13 AU - 1.87 AU

Year: 1186 Days

Day: 10.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 24,638,321 km

• M1: 180,415 km (0.086 R)
• M2: 688,599 km (0.045 R)
• M3: 1,142,030 km (0.051 R)
• M4: 1,919,939 km (0.106 R)
• M5: 2,661,795 km (0.073 R)
• M6: 3,589,302 km (0.097 R)
• M7: 4,046,473 km (0.1 R)
• M8: 5,495,029 km (0.111 R)
• M9: 6,304,802 km (0.087 R)
• M10: 6,856,370 km (0.064 R)
• M11: 7,795,844 km (0.109 R)
• M12: 8,323,925 km (0.096 R)
• M13: 10,776,283 km (0.068 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278

Radius: 13

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.31 AU - 2.15 AU

Year: 1469 Days

Day: 6.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 24,638,321 km

• M1: 161,865 km (0.109 R)
• M2: 607,667 km (0.115 R)
• M3: 1,029,832 km (0.058 R)
• M4: 1,886,878 km (0.073 R)
• M5: 2,303,358 km (0.104 R)
• M6: 2,855,674 km (0.073 R)
• M7: 3,313,144 km (0.119 R)
• M8: 4,686,004 km (0.101 R)
• M9: 5,194,188 km (0.115 R)
• M10: 5,699,080 km (0.062 R)
• M11: 8,337,987 km (0.093 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 143.3

Radius: 11.4

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 5.29 AU - 5.47 AU

Year: 8057 Days

Day: 10.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 24,638,321 km

• M1: 146,756 km (0.116 R)
• M2: 1,174,194 km (0.03 R)
• M3: 2,271,494 km (0.054 R)
• M4: 2,767,112 km (0.081 R)
• M5: 4,420,767 km (0.096 R)
• M6: 5,198,526 km (0.111 R)
• M7: 5,702,072 km (0.089 R)
• M8: 6,745,667 km (0.048 R)
• M9: 7,608,847 km (0.107 R)
• M10: 10,559,216 km (0.116 R)
• M11: 11,195,007 km (0.102 R)
• M12: 12,968,340 km (0.115 R)
• M13: 14,921,789 km (0.113 R)
• M14: 17,294,860 km (0.098 R)
• M15: 19,216,894 km (0.036 R)
• M16: 23,268,453 km (0.098 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 179 - 19,096 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit