🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.41

Radius: 0.7

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.51 AU - 0.67 AU

Year: 288 Days

Day: 32.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 35.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 524.8

Radius: 13

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.76 AU - 0.8 AU

Year: 438 Days

Day: 9.2 Hours

Environment

Temp: -142 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 17,138,162 km

• M1: 161,715 km (0.095 R)
• M2: 609,013 km (0.055 R)
• M3: 1,193,492 km (0.108 R)
• M4: 1,817,165 km (0.115 R)
• M5: 2,392,668 km (0.048 R)
• M6: 2,920,300 km (0.043 R)
• M7: 3,889,694 km (0.079 R)
• M8: 4,667,005 km (0.093 R)
• M9: 5,308,331 km (0.052 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 234.4

Radius: 13.8

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.73 AU - 0.87 AU

Year: 455 Days

Day: 8.5 Hours

Environment

Temp: -148 °C

Axial Tilt: 4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 17,138,162 km

• M1: 171,589 km (0.089 R)
• M2: 639,531 km (0.108 R)
• M3: 1,530,536 km (0.032 R)
• M4: 2,334,924 km (0.058 R)
• M5: 3,043,269 km (0.094 R)
• M6: 3,972,721 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 923.6

Radius: 13.6

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 1.39 AU - 1.45 AU

Year: 1076 Days

Day: 10.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 17,138,162 km

• M1: 169,794 km (0.037 R)
• M2: 671,096 km (0.081 R)
• M3: 1,708,258 km (0.07 R)
• M4: 2,876,169 km (0.098 R)
• M5: 3,518,243 km (0.113 R)
• M6: 4,395,933 km (0.108 R)
• M7: 5,251,633 km (0.052 R)
• M8: 6,215,642 km (0.068 R)
• M9: 6,824,505 km (0.038 R)
• M10: 7,473,012 km (0.098 R)
• M11: 8,720,957 km (0.113 R)
• M12: 9,546,139 km (0.079 R)
• M13: 10,487,409 km (0.118 R)
• M14: 11,182,441 km (0.062 R)
• M15: 11,943,296 km (0.074 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 931.2

Radius: 8.9

Gravity: 11.76 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.98 AU - 2.26 AU

Year: 1963 Days

Day: 14 Hours

Environment

Temp: -192 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 17,138,162 km

• M1: 110,702 km (0.064 R)
• M2: 489,484 km (0.095 R)
• M3: 1,756,429 km (0.044 R)
• M4: 2,351,828 km (0.113 R)
• M5: 2,855,075 km (0.054 R)
• M6: 3,642,110 km (0.118 R)
• M7: 4,236,013 km (0.083 R)
• M8: 5,422,923 km (0.096 R)
• M9: 6,067,690 km (0.067 R)
• M10: 7,216,003 km (0.094 R)
• M11: 7,780,735 km (0.118 R)
• M12: 9,652,354 km (0.083 R)
• M13: 9,973,092 km (0.084 R)
• M14: 10,787,353 km (0.048 R)
• M15: 11,645,297 km (0.086 R)
• M16: 12,049,959 km (0.064 R)
• M17: 12,547,970 km (0.036 R)
• M18: 12,844,772 km (0.119 R)
• M19: 14,079,104 km (0.097 R)
• M20: 14,772,042 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.8

Radius: 12.5

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.69 AU - 3.27 AU

Year: 3271 Days

Day: 13.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 17,138,162 km

• M1: 155,432 km (0.111 R)
• M2: 626,965 km (0.045 R)
• M3: 1,051,972 km (0.12 R)
• M4: 1,782,159 km (0.057 R)
• M5: 2,241,425 km (0.108 R)
• M6: 2,804,362 km (0.063 R)
• M7: 3,911,386 km (0.077 R)
• M8: 7,112,332 km (0.102 R)
• M9: 8,257,204 km (0.091 R)
• M10: 8,956,574 km (0.12 R)
• M11: 10,230,101 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642

Radius: 14.9

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 2.6 AU - 3.86 AU

Year: 3691 Days

Day: 8 Hours

Environment

Temp: -202 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 17,138,162 km

• M1: 185,651 km (0.078 R)
• M2: 1,617,003 km (0.028 R)
• M3: 2,211,655 km (0.095 R)
• M4: 2,968,770 km (0.068 R)
• M5: 3,873,538 km (0.084 R)
• M6: 4,955,878 km (0.12 R)
• M7: 7,816,489 km (0.083 R)
• M8: 8,721,556 km (0.066 R)
• M9: 10,657,801 km (0.115 R)
• M10: 12,129,246 km (0.076 R)
• M11: 12,913,887 km (0.116 R)
• M12: 13,732,337 km (0.099 R)
• M13: 14,381,292 km (0.036 R)
• M14: 15,957,156 km (0.114 R)
• M15: 16,618,827 km (0.065 R)
• M16: 17,762,354 km (0.053 R)
• M17: 18,896,605 km (0.083 R)
• M18: 19,762,926 km (0.118 R)
• M19: 23,425,082 km (0.06 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.2

Radius: 10.1

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 3.5 AU - 4.68 AU

Year: 5259 Days

Day: 13 Hours

Environment

Temp: -212 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 17,138,162 km

• M1: 134,937 km (0.108 R)
• M2: 531,970 km (0.032 R)
• M3: 1,324,091 km (0.118 R)
• M4: 1,645,128 km (0.065 R)
• M5: 2,342,703 km (0.03 R)
• M6: 2,730,760 km (0.077 R)
• M7: 9,403,273 km (0.075 R)
• M8: 9,853,114 km (0.086 R)
• M9: 10,758,929 km (0.051 R)
• M10: 11,289,852 km (0.076 R)
• M11: 12,569,213 km (0.091 R)
• M12: 14,619,751 km (0.062 R)
• M13: 15,083,355 km (0.113 R)
• M14: 16,632,890 km (0.12 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 409 - 13,000 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit