🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.72

Radius: 0.88

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.47 AU - 0.59 AU

Year: 249 Days

Day: 28.2 Hours

Environment

Temp: -130 °C

Axial Tilt: 44.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,464,295 km

• M1: 136,284 km (0.089 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.44

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.56 AU - 0.68 AU

Year: 315 Days

Day: 27.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 2.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,464,295 km

• M1: 405,261 km (0.102 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.51 AU - 0.77 AU

Year: 331 Days

Day: 35 Hours

Environment

Temp: -135 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.3

Radius: 13.4

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.65 AU - 0.79 AU

Year: 394 Days

Day: 12.9 Hours

Environment

Temp: -145 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 63,464,295 km

• M1: 167,998 km (0.065 R)
• M2: 623,524 km (0.045 R)
• M3: 1,200,224 km (0.073 R)
• M4: 2,011,643 km (0.108 R)
• M5: 2,610,333 km (0.086 R)
• M6: 3,039,380 km (0.057 R)
• M7: 3,493,409 km (0.116 R)
• M8: 3,918,567 km (0.053 R)
• M9: 4,458,765 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 926.7

Radius: 8.3

Gravity: 13.45 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.79 AU - 1.15 AU

Year: 617 Days

Day: 14.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 63,464,295 km

• M1: 106,663 km (0.061 R)
• M2: 465,848 km (0.084 R)
• M3: 799,451 km (0.026 R)
• M4: 1,245,851 km (0.041 R)
• M5: 1,554,023 km (0.06 R)
• M6: 1,859,801 km (0.099 R)
• M7: 2,788,056 km (0.106 R)
• M8: 3,620,568 km (0.106 R)
• M9: 3,922,307 km (0.112 R)
• M10: 4,495,117 km (0.073 R)
• M11: 4,930,147 km (0.094 R)
• M12: 5,301,749 km (0.101 R)
• M13: 6,021,763 km (0.058 R)
• M14: 6,741,030 km (0.078 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 560.9

Radius: 13.2

Gravity: 3.22 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.94 AU - 1.16 AU

Year: 695 Days

Day: 7.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 63,464,295 km

• M1: 165,904 km (0.119 R)
• M2: 876,494 km (0.111 R)
• M3: 1,501,364 km (0.109 R)
• M4: 2,266,707 km (0.108 R)
• M5: 2,750,955 km (0.082 R)
• M6: 3,229,818 km (0.055 R)
• M7: 3,819,533 km (0.115 R)
• M8: 4,388,154 km (0.096 R)
• M9: 4,929,399 km (0.078 R)
• M10: 5,788,091 km (0.096 R)
• M11: 6,744,171 km (0.092 R)
• M12: 7,271,055 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 267.1

Radius: 13.1

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.9 AU - 1.34 AU

Year: 765 Days

Day: 8.2 Hours

Environment

Temp: -157 °C

Axial Tilt: 54.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 63,464,295 km

• M1: 168,597 km (0.111 R)
• M2: 612,005 km (0.118 R)
• M3: 1,094,009 km (0.045 R)
• M4: 1,511,238 km (0.087 R)
• M5: 1,971,401 km (0.103 R)
• M6: 2,382,496 km (0.117 R)
• M7: 3,092,338 km (0.108 R)
• M8: 4,586,372 km (0.091 R)
• M9: 5,336,006 km (0.048 R)
• M10: 5,810,082 km (0.06 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.1

Radius: 11.2

Gravity: 6.98 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 2.74 AU - 3.6 AU

Year: 3644 Days

Day: 9.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 63,464,295 km

• M1: 139,425 km (0.118 R)
• M2: 504,145 km (0.108 R)
• M3: 902,973 km (0.104 R)
• M4: 1,520,214 km (0.096 R)
• M5: 1,985,313 km (0.106 R)
• M6: 2,742,279 km (0.107 R)
• M7: 3,188,080 km (0.079 R)
• M8: 4,158,671 km (0.084 R)
• M9: 5,342,888 km (0.107 R)
• M10: 5,840,899 km (0.119 R)
• M11: 6,834,229 km (0.092 R)
• M12: 7,354,979 km (0.113 R)
• M13: 9,467,451 km (0.074 R)
• M14: 10,323,599 km (0.076 R)
• M15: 11,499,289 km (0.049 R)
• M16: 14,376,056 km (0.116 R)
• M17: 16,637,527 km (0.076 R)
• M18: 17,701,617 km (0.074 R)
• M19: 20,426,692 km (0.093 R)
• M20: 20,962,850 km (0.118 R)
• M21: 24,304,867 km (0.096 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.2

Radius: 13.2

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 3.45 AU - 4.47 AU

Year: 5088 Days

Day: 11.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 63,464,295 km

• M1: 164,558 km (0.028 R)
• M2: 1,486,105 km (0.027 R)
• M3: 2,681,991 km (0.08 R)
• M4: 3,224,732 km (0.099 R)
• M5: 6,198,438 km (0.076 R)
• M6: 8,626,262 km (0.085 R)
• M7: 13,658,286 km (0.119 R)
• M8: 14,552,133 km (0.105 R)
• M9: 16,677,769 km (0.087 R)
• M10: 17,126,563 km (0.036 R)
• M11: 18,107,177 km (0.063 R)
• M12: 23,440,042 km (0.093 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 819.3

Radius: 5.9

Gravity: 23.54 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 5.98 AU - 9.52 AU

Year: 13931 Days

Day: 18.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 63,464,295 km

• M1: 73,303 km (0.067 R)
• M2: 358,137 km (0.078 R)
• M3: 565,480 km (0.115 R)
• M4: 1,005,597 km (0.103 R)
• M5: 2,435,304 km (0.102 R)
• M6: 3,284,272 km (0.042 R)
• M7: 5,255,373 km (0.082 R)
• M8: 5,697,136 km (0.114 R)
• M9: 6,739,234 km (0.069 R)
• M10: 7,669,135 km (0.057 R)
• M11: 7,997,203 km (0.118 R)
• M12: 8,935,331 km (0.031 R)
• M13: 9,564,390 km (0.095 R)
• M14: 16,535,651 km (0.077 R)
• M15: 17,083,478 km (0.03 R)
• M16: 18,298,064 km (0.114 R)
• M17: 19,655,814 km (0.058 R)
• M18: 24,030,953 km (0.085 R)
• M19: 24,632,337 km (0.095 R)
• M20: 28,342,214 km (0.099 R)
• M21: 29,239,502 km (0.118 R)
• M22: 29,924,810 km (0.064 R)
• M23: 32,165,786 km (0.079 R)
• M24: 41,386,101 km (0.119 R)
• M25: 44,461,385 km (0.057 R)
• M26: 45,367,200 km (0.097 R)
• M27: 48,316,971 km (0.086 R)
• M28: 56,157,545 km (0.093 R)
• M29: 59,008,880 km (0.117 R)
• M30: 59,736,375 km (0.109 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 259 - 13,693 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit