🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.43 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.8 AU - 0.9 AU

Year: 281 Days

Day: 34.1 Hours

Environment

Temp: 120 °C

Axial Tilt: 12.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.97 AU - 2.07 AU

Year: 1028 Days

Day: 21 Hours

Environment

Temp: -58 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,690,619 km

• M1: 33,211 km (0.117 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.56

Radius: 1.19

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 2.94 AU - 3.2 AU

Year: 1927 Days

Day: 27 Hours

Environment

Temp: -94 °C

Axial Tilt: 25.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.88 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 6.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.7

Radius: 11

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 5.44 AU - 7.92 AU

Year: 6184 Days

Day: 13.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 84,690,619 km

• M1: 136,732 km (0.071 R)
• M2: 536,608 km (0.106 R)
• M3: 1,138,440 km (0.073 R)
• M4: 2,008,202 km (0.085 R)
• M5: 2,644,142 km (0.109 R)
• M6: 3,045,065 km (0.12 R)
• M7: 5,421,128 km (0.049 R)
• M8: 6,703,181 km (0.114 R)
• M9: 7,985,834 km (0.118 R)
• M10: 8,627,908 km (0.105 R)
• M11: 9,274,021 km (0.114 R)
• M12: 9,889,167 km (0.108 R)
• M13: 11,792,351 km (0.091 R)
• M14: 12,185,943 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 7.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.2

Radius: 14

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 6.96 AU - 7.48 AU

Year: 6948 Days

Day: 10.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 84,690,619 km

• M1: 174,132 km (0.113 R)
• M2: 612,603 km (0.039 R)
• M3: 1,522,458 km (0.113 R)
• M4: 2,099,606 km (0.12 R)
• M5: 2,690,667 km (0.082 R)
• M6: 3,370,141 km (0.116 R)
• M7: 3,869,050 km (0.116 R)
• M8: 5,219,919 km (0.088 R)
• M9: 5,860,048 km (0.1 R)
• M10: 6,655,460 km (0.043 R)
• M11: 7,151,975 km (0.105 R)
• M12: 8,708,990 km (0.072 R)
• M13: 9,567,532 km (0.052 R)
• M14: 11,304,214 km (0.109 R)
• M15: 12,013,307 km (0.038 R)
• M16: 12,698,316 km (0.058 R)
• M17: 13,576,904 km (0.053 R)
• M18: 14,970,259 km (0.072 R)
• M19: 15,516,740 km (0.056 R)
• M20: 17,501,754 km (0.107 R)
• M21: 18,451,551 km (0.058 R)
• M22: 19,080,161 km (0.102 R)
• M23: 23,888,237 km (0.053 R)
• M24: 24,468,078 km (0.065 R)
• M25: 26,176,187 km (0.071 R)
• M26: 29,166,798 km (0.05 R)
• M27: 30,793,076 km (0.081 R)
• M28: 31,976,844 km (0.089 R)
• M29: 33,396,079 km (0.082 R)
• M30: 34,435,335 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 10.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.7

Radius: 10.1

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 9.42 AU - 12.54 AU

Year: 13031 Days

Day: 10.1 Hours

Environment

Temp: -181 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 84,690,619 km

• M1: 153,487 km (0.09 R)
• M2: 487,539 km (0.094 R)
• M3: 1,058,854 km (0.054 R)
• M4: 2,790,599 km (0.045 R)
• M5: 3,309,254 km (0.107 R)
• M6: 3,689,981 km (0.107 R)
• M7: 4,073,400 km (0.104 R)
• M8: 4,890,803 km (0.116 R)
• M9: 7,311,596 km (0.049 R)
• M10: 8,472,475 km (0.111 R)
• M11: 10,438,491 km (0.069 R)
• M12: 11,527,713 km (0.113 R)
• M13: 11,852,490 km (0.082 R)
• M14: 13,568,826 km (0.086 R)
• M15: 16,040,033 km (0.107 R)
• M16: 17,135,688 km (0.035 R)
• M17: 23,029,545 km (0.11 R)
• M18: 24,600,622 km (0.088 R)
• M19: 26,522,356 km (0.037 R)
• M20: 28,149,831 km (0.118 R)
• M21: 29,137,626 km (0.083 R)
• M22: 29,741,253 km (0.08 R)
• M23: 30,353,258 km (0.108 R)
• M24: 35,327,836 km (0.107 R)
• M25: 38,246,940 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 707.1

Radius: 7.9

Gravity: 11.33 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 14.26 AU - 17.92 AU

Year: 23116 Days

Day: 16.3 Hours

Environment

Temp: -182 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 84,690,619 km

• M1: 98,286 km (0.048 R)
• M2: 660,325 km (0.057 R)
• M3: 1,517,521 km (0.067 R)
• M4: 2,382,196 km (0.093 R)
• M5: 3,138,264 km (0.114 R)
• M6: 4,488,235 km (0.104 R)
• M7: 4,776,810 km (0.061 R)
• M8: 9,395,195 km (0.103 R)
• M9: 12,692,033 km (0.044 R)
• M10: 13,567,031 km (0.093 R)
• M11: 14,638,002 km (0.113 R)
• M12: 15,436,705 km (0.101 R)
• M13: 18,007,245 km (0.093 R)
• M14: 20,949,536 km (0.057 R)
• M15: 22,169,806 km (0.077 R)
• M16: 24,528,964 km (0.079 R)
• M17: 25,768,981 km (0.094 R)
• M18: 30,374,800 km (0.064 R)
• M19: 42,123,170 km (0.077 R)
• M20: 50,236,461 km (0.117 R)
• M21: 77,542,411 km (0.076 R)
• M22: 79,715,918 km (0.057 R)
• M23: 83,931,586 km (0.092 R)

Kuiper Belt

Range: 30.6 - 60.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 335 - 13,404 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit