🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.65 AU - 0.93 AU

Year: 256 Days

Day: 42.9 Hours

Environment

Temp: 178 °C

Axial Tilt: 23.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 63,390,181 km

• M1: 40,691 km (0.083 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.13

Radius: 1.05

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.04 AU - 1.48 AU

Year: 517 Days

Day: 13.4 Hours

Environment

Temp: -12 °C

Axial Tilt: 39.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.87

Radius: 0.95

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.87 AU - 3.05 AU

Year: 1409 Days

Day: 31.3 Hours

Environment

Temp: -92 °C

Axial Tilt: 32.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 2.36 AU - 3.72 AU

Year: 1936 Days

Day: 12.6 Hours

Environment

Temp: -111 °C

Axial Tilt: 7.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 3.03 AU - 4.55 AU

Year: 2695 Days

Day: 35.6 Hours

Environment

Temp: -110 °C

Axial Tilt: 19.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 8.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 332.7

Radius: 8

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 7.81 AU - 8.75 AU

Year: 8702 Days

Day: 5.6 Hours

Environment

Temp: -163 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 63,390,181 km

• M1: 99,782 km (0.106 R)
• M2: 500,106 km (0.053 R)
• M3: 867,368 km (0.073 R)
• M4: 1,683,874 km (0.047 R)
• M5: 1,934,300 km (0.089 R)
• M6: 2,600,460 km (0.092 R)
• M7: 2,879,460 km (0.107 R)
• M8: 3,454,514 km (0.104 R)
• M9: 3,934,125 km (0.098 R)
• M10: 5,551,876 km (0.099 R)
• M11: 6,780,972 km (0.115 R)
• M12: 7,096,773 km (0.086 R)
• M13: 7,682,599 km (0.117 R)
• M14: 8,103,866 km (0.075 R)
• M15: 8,909,152 km (0.071 R)
• M16: 12,149,890 km (0.091 R)
• M17: 12,827,868 km (0.104 R)
• M18: 14,032,280 km (0.11 R)
• M19: 15,611,585 km (0.097 R)
• M20: 17,305,781 km (0.116 R)
• M21: 18,842,749 km (0.044 R)
• M22: 21,804,787 km (0.094 R)
• M23: 22,339,749 km (0.094 R)
• M24: 30,872,213 km (0.085 R)
• M25: 33,832,456 km (0.039 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 340.1

Radius: 8.2

Gravity: 5.06 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 9.39 AU - 13.11 AU

Year: 13782 Days

Day: 15 Hours

Environment

Temp: -184 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 63,390,181 km

• M1: 103,372 km (0.092 R)
• M2: 1,222,364 km (0.109 R)
• M3: 1,653,356 km (0.117 R)
• M4: 3,058,977 km (0.112 R)
• M5: 3,702,547 km (0.09 R)
• M6: 4,124,712 km (0.101 R)
• M7: 5,964,916 km (0.093 R)
• M8: 6,287,299 km (0.091 R)
• M9: 6,966,922 km (0.027 R)
• M10: 9,300,948 km (0.103 R)
• M11: 9,735,081 km (0.057 R)
• M12: 11,663,398 km (0.111 R)
• M13: 13,222,208 km (0.108 R)
• M14: 13,586,628 km (0.103 R)
• M15: 15,510,307 km (0.114 R)
• M16: 16,259,045 km (0.041 R)
• M17: 17,608,717 km (0.081 R)
• M18: 18,423,427 km (0.083 R)
• M19: 20,529,465 km (0.046 R)
• M20: 23,052,134 km (0.049 R)
• M21: 24,478,700 km (0.038 R)
• M22: 30,353,707 km (0.115 R)
• M23: 32,613,533 km (0.085 R)
• M24: 38,441,118 km (0.085 R)
• M25: 45,889,147 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.1

Radius: 14.9

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 9.81 AU - 12.69 AU

Year: 13782 Days

Day: 7.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 63,390,181 km

• M1: 186,100 km (0.109 R)
• M2: 661,223 km (0.07 R)
• M3: 1,161,029 km (0.062 R)
• M4: 1,807,890 km (0.114 R)
• M5: 3,183,592 km (0.046 R)
• M6: 4,110,201 km (0.107 R)
• M7: 5,037,260 km (0.102 R)
• M8: 6,060,808 km (0.119 R)
• M9: 7,440,699 km (0.078 R)
• M10: 8,325,271 km (0.096 R)
• M11: 9,175,286 km (0.097 R)
• M12: 9,809,731 km (0.048 R)
• M13: 12,390,144 km (0.106 R)
• M14: 15,031,145 km (0.104 R)
• M15: 18,028,039 km (0.067 R)
• M16: 18,772,588 km (0.102 R)
• M17: 19,537,482 km (0.111 R)
• M18: 20,500,593 km (0.113 R)
• M19: 23,191,560 km (0.078 R)
• M20: 26,320,100 km (0.105 R)
• M21: 27,712,258 km (0.106 R)
• M22: 32,063,162 km (0.096 R)
• M23: 43,257,720 km (0.064 R)
• M24: 44,443,134 km (0.114 R)
• M25: 45,043,919 km (0.092 R)
• M26: 51,683,372 km (0.081 R)
• M27: 57,514,547 km (0.103 R)
• M28: 59,673,244 km (0.111 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 540 - 13,628 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit