🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.41

Radius: 0.7

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.46 AU - 0.76 AU

Year: 313 Days

Day: 32.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.9

Radius: 14.8

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.61 AU - 0.93 AU

Year: 443 Days

Day: 10.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,753,669 km

• M1: 184,005 km (0.111 R)
• M2: 821,592 km (0.091 R)
• M3: 1,292,675 km (0.084 R)
• M4: 2,179,043 km (0.117 R)
• M5: 2,822,463 km (0.104 R)
• M6: 3,654,078 km (0.106 R)
• M7: 4,211,479 km (0.054 R)
• M8: 5,027,536 km (0.117 R)
• M9: 5,771,935 km (0.104 R)
• M10: 6,253,191 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 234.2

Radius: 14.9

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.77 AU - 1.19 AU

Year: 636 Days

Day: 14.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 56,753,669 km

• M1: 185,352 km (0.096 R)
• M2: 861,385 km (0.109 R)
• M3: 1,350,121 km (0.056 R)
• M4: 2,208,214 km (0.065 R)
• M5: 3,049,852 km (0.099 R)
• M6: 3,895,229 km (0.096 R)
• M7: 5,009,733 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 543.9

Radius: 11.3

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.5 AU - 2 AU

Year: 1519 Days

Day: 6.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,753,669 km

• M1: 140,921 km (0.044 R)
• M2: 531,072 km (0.093 R)
• M3: 922,271 km (0.105 R)
• M4: 1,471,145 km (0.044 R)
• M5: 2,358,261 km (0.036 R)
• M6: 2,962,487 km (0.071 R)
• M7: 3,716,161 km (0.106 R)
• M8: 4,688,248 km (0.113 R)
• M9: 7,388,190 km (0.05 R)
• M10: 8,539,196 km (0.107 R)
• M11: 9,901,135 km (0.119 R)
• M12: 12,263,285 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.8

Radius: 13

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.69 AU - 2.61 AU

Year: 2068 Days

Day: 9.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,753,669 km

• M1: 162,762 km (0.079 R)
• M2: 667,356 km (0.068 R)
• M3: 1,234,631 km (0.093 R)
• M4: 1,666,071 km (0.116 R)
• M5: 2,653,417 km (0.095 R)
• M6: 3,951,927 km (0.093 R)
• M7: 4,457,119 km (0.067 R)
• M8: 5,079,147 km (0.108 R)
• M9: 6,497,784 km (0.101 R)
• M10: 8,989,635 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 890.6

Radius: 13.3

Gravity: 5.03 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 2.36 AU - 2.48 AU

Year: 2470 Days

Day: 9.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 56,753,669 km

• M1: 165,455 km (0.101 R)
• M2: 590,164 km (0.086 R)
• M3: 1,033,721 km (0.093 R)
• M4: 2,002,218 km (0.081 R)
• M5: 2,438,744 km (0.059 R)
• M6: 3,172,372 km (0.108 R)
• M7: 3,752,812 km (0.098 R)
• M8: 4,360,778 km (0.103 R)
• M9: 4,870,757 km (0.087 R)
• M10: 6,145,630 km (0.075 R)
• M11: 6,788,901 km (0.108 R)
• M12: 7,262,528 km (0.111 R)
• M13: 9,382,629 km (0.053 R)
• M14: 15,356,969 km (0.107 R)
• M15: 17,901,629 km (0.072 R)
• M16: 19,274,190 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.9

Radius: 12.8

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 5.36 AU - 6 AU

Year: 8880 Days

Day: 14.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 56,753,669 km

• M1: 159,172 km (0.1 R)
• M2: 633,996 km (0.109 R)
• M3: 1,160,730 km (0.062 R)
• M4: 1,669,961 km (0.097 R)
• M5: 2,107,236 km (0.112 R)
• M6: 2,679,298 km (0.107 R)
• M7: 3,422,650 km (0.088 R)
• M8: 4,139,074 km (0.116 R)
• M9: 4,864,474 km (0.106 R)
• M10: 6,789,051 km (0.119 R)
• M11: 9,268,934 km (0.086 R)
• M12: 10,069,433 km (0.117 R)
• M13: 11,329,944 km (0.11 R)
• M14: 13,443,762 km (0.075 R)
• M15: 15,289,202 km (0.115 R)
• M16: 17,791,076 km (0.085 R)
• M17: 18,879,251 km (0.053 R)
• M18: 21,509,331 km (0.097 R)
• M19: 23,678,949 km (0.045 R)
• M20: 24,287,214 km (0.11 R)
• M21: 32,104,152 km (0.049 R)
• M22: 33,172,430 km (0.068 R)
• M23: 34,930,953 km (0.032 R)
• M24: 36,635,023 km (0.116 R)
• M25: 40,331,736 km (0.067 R)
• M26: 41,953,376 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 907

Radius: 6.6

Gravity: 20.82 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 5.37 AU - 7.57 AU

Year: 10796 Days

Day: 24.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 56,753,669 km

• M1: 82,129 km (0.061 R)
• M2: 344,374 km (0.102 R)
• M3: 790,774 km (0.105 R)
• M4: 1,232,387 km (0.074 R)
• M5: 3,756,403 km (0.107 R)
• M6: 4,063,976 km (0.109 R)
• M7: 5,022,150 km (0.096 R)
• M8: 6,954,506 km (0.118 R)
• M9: 8,316,445 km (0.091 R)
• M10: 8,599,334 km (0.106 R)
• M11: 8,986,494 km (0.115 R)
• M12: 11,615,826 km (0.108 R)
• M13: 14,445,769 km (0.05 R)
• M14: 16,201,449 km (0.118 R)
• M15: 17,396,736 km (0.095 R)
• M16: 18,730,102 km (0.064 R)
• M17: 19,298,425 km (0.12 R)
• M18: 20,299,384 km (0.074 R)
• M19: 23,322,906 km (0.112 R)
• M20: 24,075,533 km (0.049 R)
• M21: 25,136,781 km (0.104 R)
• M22: 26,735,533 km (0.073 R)
• M23: 27,873,225 km (0.104 R)
• M24: 28,507,221 km (0.074 R)
• M25: 30,244,950 km (0.115 R)
• M26: 36,004,019 km (0.095 R)
• M27: 42,871,159 km (0.047 R)
• M28: 46,021,840 km (0.088 R)
• M29: 46,463,154 km (0.12 R)
• M30: 49,170,127 km (0.074 R)
• M31: 49,477,252 km (0.11 R)
• M32: 55,061,142 km (0.032 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 300.7

Radius: 3.9

Gravity: 19.77 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 6.82 AU - 8.92 AU

Year: 14483 Days

Day: 17.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 56,753,669 km

• M1: 48,769 km (0.087 R)
• M2: 232,176 km (0.081 R)
• M3: 565,031 km (0.113 R)
• M4: 785,090 km (0.089 R)
• M5: 1,049,429 km (0.108 R)
• M6: 1,196,484 km (0.101 R)
• M7: 1,847,384 km (0.088 R)
• M8: 2,011,792 km (0.05 R)
• M9: 2,446,673 km (0.084 R)
• M10: 3,378,070 km (0.114 R)
• M11: 3,599,474 km (0.116 R)
• M12: 4,209,235 km (0.081 R)
• M13: 4,612,551 km (0.095 R)
• M14: 5,871,567 km (0.092 R)
• M15: 7,182,044 km (0.115 R)
• M16: 7,926,593 km (0.113 R)
• M17: 8,540,094 km (0.091 R)
• M18: 9,422,721 km (0.097 R)
• M19: 11,531,303 km (0.065 R)
• M20: 13,019,802 km (0.095 R)
• M21: 16,441,404 km (0.072 R)
• M22: 19,701,441 km (0.091 R)
• M23: 20,741,146 km (0.118 R)
• M24: 24,805,571 km (0.101 R)
• M25: 26,878,100 km (0.082 R)
• M26: 28,055,734 km (0.048 R)
• M27: 29,679,021 km (0.037 R)
• M28: 32,668,435 km (0.09 R)
• M29: 39,112,662 km (0.04 R)
• M30: 41,521,787 km (0.09 R)
• M31: 43,358,998 km (0.055 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 272.3

Radius: 4.6

Gravity: 12.87 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 8.69 AU - 11.11 AU

Year: 20434 Days

Day: 20.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 56,753,669 km

• M1: 57,146 km (0.088 R)
• M2: 433,983 km (0.081 R)
• M3: 644,617 km (0.073 R)
• M4: 1,124,228 km (0.118 R)
• M5: 1,650,065 km (0.086 R)
• M6: 2,529,999 km (0.081 R)
• M7: 3,119,415 km (0.115 R)
• M8: 5,539,908 km (0.088 R)
• M9: 6,019,070 km (0.069 R)
• M10: 9,034,515 km (0.084 R)
• M11: 9,184,711 km (0.037 R)
• M12: 9,697,383 km (0.035 R)
• M13: 11,349,841 km (0.068 R)
• M14: 12,426,497 km (0.075 R)
• M15: 13,766,594 km (0.12 R)
• M16: 15,270,951 km (0.115 R)
• M17: 15,627,442 km (0.062 R)
• M18: 16,357,181 km (0.029 R)
• M19: 17,262,547 km (0.052 R)
• M20: 18,763,612 km (0.07 R)
• M21: 22,113,108 km (0.027 R)
• M22: 23,976,051 km (0.083 R)
• M23: 24,945,595 km (0.097 R)
• M24: 27,378,654 km (0.07 R)
• M25: 28,868,649 km (0.1 R)
• M26: 35,122,289 km (0.053 R)
• M27: 37,650,044 km (0.104 R)
• M28: 38,826,183 km (0.12 R)
• M29: 44,639,406 km (0.075 R)
• M30: 47,449,602 km (0.101 R)
• M31: 47,752,089 km (0.025 R)
• M32: 50,690,341 km (0.071 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: 327 - 18,772 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit