🌌 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: 4.56

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.45 AU - 0.63 AU

Year: 256 Days

Day: 46.5 Hours

Environment

Temp: -119 °C

Axial Tilt: 27.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 47.4

Radius: 8.5

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.77 AU - 1.23 AU

Year: 646 Days

Day: 7.9 Hours

Environment

Temp: -154 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 51,172,569 km

• M1: 105,766 km (0.116 R)
• M2: 373,695 km (0.112 R)
• M3: 780,302 km (0.093 R)
• M4: 1,196,783 km (0.039 R)
• M5: 2,184,877 km (0.092 R)
• M6: 2,505,166 km (0.095 R)
• M7: 2,917,158 km (0.062 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.7

Radius: 9.8

Gravity: 9.96 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.93 AU - 2.63 AU

Year: 2223 Days

Day: 7.4 Hours

Environment

Temp: -187 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 51,172,569 km

• M1: 122,072 km (0.118 R)
• M2: 453,581 km (0.059 R)
• M3: 817,702 km (0.11 R)
• M4: 1,298,809 km (0.08 R)
• M5: 2,099,157 km (0.083 R)
• M6: 2,420,643 km (0.071 R)
• M7: 3,408,288 km (0.103 R)
• M8: 4,217,014 km (0.067 R)
• M9: 4,756,165 km (0.116 R)
• M10: 5,946,067 km (0.09 R)
• M11: 6,709,614 km (0.103 R)
• M12: 7,293,943 km (0.098 R)
• M13: 8,364,915 km (0.094 R)
• M14: 8,972,880 km (0.108 R)
• M15: 10,429,066 km (0.076 R)
• M16: 11,620,314 km (0.085 R)
• M17: 12,636,831 km (0.044 R)
• M18: 13,211,586 km (0.099 R)
• M19: 14,413,456 km (0.077 R)
• M20: 17,954,736 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 709.2

Radius: 9.1

Gravity: 8.56 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 2.43 AU - 3.69 AU

Year: 3456 Days

Day: 11.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 51,172,569 km

• M1: 113,246 km (0.074 R)
• M2: 530,923 km (0.113 R)
• M3: 835,055 km (0.109 R)
• M4: 1,751,342 km (0.095 R)
• M5: 2,807,952 km (0.107 R)
• M6: 3,397,667 km (0.07 R)
• M7: 3,855,736 km (0.116 R)
• M8: 4,538,051 km (0.087 R)
• M9: 6,520,672 km (0.104 R)
• M10: 7,520,883 km (0.07 R)
• M11: 8,092,198 km (0.094 R)
• M12: 11,176,906 km (0.093 R)
• M13: 15,283,816 km (0.095 R)
• M14: 16,925,503 km (0.025 R)
• M15: 21,940,173 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 479.5

Radius: 11.5

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 3.34 AU - 4.14 AU

Year: 4670 Days

Day: 12.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 51,172,569 km

• M1: 143,165 km (0.104 R)
• M2: 601,234 km (0.04 R)
• M3: 1,126,771 km (0.082 R)
• M4: 1,529,937 km (0.047 R)
• M5: 2,907,883 km (0.065 R)
• M6: 5,191,046 km (0.08 R)
• M7: 6,011,142 km (0.111 R)
• M8: 9,691,249 km (0.092 R)
• M9: 10,676,800 km (0.094 R)
• M10: 14,551,983 km (0.064 R)
• M11: 17,681,720 km (0.096 R)
• M12: 18,652,611 km (0.067 R)
• M13: 20,305,368 km (0.117 R)
• M14: 21,778,458 km (0.04 R)
• M15: 24,861,521 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 160.6

Radius: 13.1

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 3.52 AU - 5.14 AU

Year: 5818 Days

Day: 5.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 51,172,569 km

• M1: 164,258 km (0.077 R)
• M2: 651,050 km (0.099 R)
• M3: 1,092,663 km (0.04 R)
• M4: 1,540,559 km (0.107 R)
• M5: 2,611,530 km (0.106 R)
• M6: 3,416,516 km (0.091 R)
• M7: 4,733,127 km (0.042 R)
• M8: 5,151,851 km (0.06 R)
• M9: 6,336,517 km (0.048 R)
• M10: 6,759,879 km (0.084 R)
• M11: 7,821,874 km (0.081 R)
• M12: 8,510,922 km (0.058 R)
• M13: 11,347,746 km (0.038 R)
• M14: 12,188,337 km (0.1 R)
• M15: 13,160,573 km (0.079 R)
• M16: 18,017,119 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 670.3

Radius: 4.5

Gravity: 33.1 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 5.24 AU - 7.18 AU

Year: 9992 Days

Day: 18.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 51,172,569 km

• M1: 55,950 km (0.089 R)
• M2: 210,035 km (0.082 R)
• M3: 477,367 km (0.096 R)
• M4: 720,912 km (0.11 R)
• M5: 1,167,312 km (0.084 R)
• M6: 1,403,826 km (0.115 R)
• M7: 2,253,991 km (0.115 R)
• M8: 2,442,784 km (0.091 R)
• M9: 2,788,205 km (0.11 R)
• M10: 2,939,449 km (0.028 R)
• M11: 3,306,263 km (0.107 R)
• M12: 3,451,372 km (0.095 R)
• M13: 4,020,592 km (0.11 R)
• M14: 4,680,020 km (0.094 R)
• M15: 4,894,394 km (0.108 R)
• M16: 5,244,303 km (0.101 R)
• M17: 11,709,923 km (0.06 R)
• M18: 14,536,874 km (0.031 R)
• M19: 15,059,419 km (0.101 R)
• M20: 16,560,933 km (0.086 R)
• M21: 17,203,007 km (0.114 R)
• M22: 18,460,826 km (0.077 R)
• M23: 18,996,087 km (0.117 R)
• M24: 19,384,742 km (0.093 R)
• M25: 21,659,677 km (0.052 R)
• M26: 24,016,143 km (0.045 R)
• M27: 26,153,597 km (0.091 R)
• M28: 28,922,804 km (0.044 R)
• M29: 31,016,426 km (0.069 R)
• M30: 31,772,344 km (0.111 R)
• M31: 34,000,006 km (0.112 R)
• M32: 36,448,624 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 553.9

Radius: 4.5

Gravity: 27.35 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 6.14 AU - 8.1 AU

Year: 12267 Days

Day: 15.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 51,172,569 km

• M1: 71,358 km (0.079 R)
• M2: 298,298 km (0.063 R)
• M3: 515,963 km (0.091 R)
• M4: 702,512 km (0.08 R)
• M5: 864,227 km (0.111 R)
• M6: 1,050,925 km (0.114 R)
• M7: 1,463,965 km (0.092 R)
• M8: 1,794,576 km (0.051 R)
• M9: 2,082,851 km (0.076 R)
• M10: 2,816,778 km (0.102 R)
• M11: 3,134,973 km (0.118 R)
• M12: 3,952,376 km (0.061 R)
• M13: 4,590,859 km (0.089 R)
• M14: 4,776,361 km (0.088 R)
• M15: 5,568,930 km (0.101 R)
• M16: 6,106,735 km (0.074 R)
• M17: 6,639,154 km (0.087 R)
• M18: 7,883,509 km (0.101 R)
• M19: 13,393,198 km (0.077 R)
• M20: 14,818,716 km (0.062 R)
• M21: 15,361,158 km (0.081 R)
• M22: 21,534,613 km (0.097 R)
• M23: 22,761,765 km (0.086 R)
• M24: 23,849,940 km (0.041 R)
• M25: 24,500,541 km (0.055 R)
• M26: 25,643,169 km (0.061 R)
• M27: 34,535,416 km (0.109 R)
• M28: 37,195,865 km (0.084 R)
• M29: 37,693,876 km (0.067 R)
• M30: 43,330,724 km (0.074 R)
• M31: 44,298,622 km (0.095 R)
• M32: 45,991,023 km (0.112 R)
• M33: 48,906,685 km (0.086 R)
• M34: 50,713,828 km (0.112 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 188 - 14,965 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit