🌌 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: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.45 AU - 0.61 AU

Year: 245 Days

Day: 47.3 Hours

Environment

Temp: -130 °C

Axial Tilt: 21.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.5

Radius: 9.5

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.75 AU - 1.21 AU

Year: 617 Days

Day: 10.9 Hours

Environment

Temp: -150 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 57,726,539 km

• M1: 125,213 km (0.111 R)
• M2: 423,512 km (0.105 R)
• M3: 812,915 km (0.088 R)
• M4: 1,403,078 km (0.067 R)
• M5: 1,790,537 km (0.065 R)
• M6: 2,879,759 km (0.099 R)
• M7: 3,319,128 km (0.12 R)
• M8: 3,674,423 km (0.105 R)
• M9: 4,001,145 km (0.045 R)
• M10: 5,358,446 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 603.9

Radius: 8.8

Gravity: 7.8 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.4 AU - 2.02 AU

Year: 1422 Days

Day: 7.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 57,726,539 km

• M1: 109,506 km (0.101 R)
• M2: 428,000 km (0.115 R)
• M3: 708,047 km (0.081 R)
• M4: 1,145,172 km (0.09 R)
• M5: 1,499,120 km (0.089 R)
• M6: 1,834,369 km (0.088 R)
• M7: 2,254,141 km (0.11 R)
• M8: 3,257,194 km (0.057 R)
• M9: 3,726,333 km (0.118 R)
• M10: 4,421,215 km (0.068 R)
• M11: 4,858,490 km (0.09 R)
• M12: 5,241,161 km (0.073 R)
• M13: 5,709,403 km (0.118 R)
• M14: 6,181,982 km (0.086 R)
• M15: 6,559,567 km (0.092 R)
• M16: 7,231,411 km (0.032 R)
• M17: 7,544,370 km (0.045 R)
• M18: 9,278,060 km (0.113 R)
• M19: 9,616,750 km (0.098 R)
• M20: 10,092,022 km (0.109 R)
• M21: 11,089,690 km (0.062 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.9

Radius: 11.2

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 3.64 AU - 4.6 AU

Year: 5317 Days

Day: 13 Hours

Environment

Temp: -204 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 57,726,539 km

• M1: 139,276 km (0.117 R)
• M2: 575,503 km (0.072 R)
• M3: 991,086 km (0.036 R)
• M4: 1,500,915 km (0.086 R)
• M5: 1,849,628 km (0.119 R)
• M6: 2,238,732 km (0.057 R)
• M7: 2,849,540 km (0.114 R)
• M8: 4,025,230 km (0.112 R)
• M9: 4,638,880 km (0.062 R)
• M10: 5,107,421 km (0.075 R)
• M11: 6,767,359 km (0.089 R)
• M12: 7,636,373 km (0.052 R)
• M13: 8,724,249 km (0.119 R)
• M14: 13,821,796 km (0.064 R)
• M15: 14,482,869 km (0.091 R)
• M16: 15,758,789 km (0.08 R)
• M17: 16,820,934 km (0.094 R)
• M18: 17,282,144 km (0.117 R)
• M19: 19,149,575 km (0.053 R)
• M20: 23,854,876 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.4

Radius: 13.6

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 4.57 AU - 5.65 AU

Year: 7345 Days

Day: 12.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 57,726,539 km

• M1: 169,345 km (0.108 R)
• M2: 611,706 km (0.055 R)
• M3: 1,494,034 km (0.079 R)
• M4: 2,671,668 km (0.116 R)
• M5: 3,599,624 km (0.094 R)
• M6: 4,372,297 km (0.086 R)
• M7: 4,892,898 km (0.085 R)
• M8: 5,812,176 km (0.113 R)
• M9: 6,378,105 km (0.072 R)
• M10: 8,069,758 km (0.113 R)
• M11: 8,496,261 km (0.077 R)
• M12: 11,238,390 km (0.066 R)
• M13: 11,722,340 km (0.101 R)
• M14: 12,732,275 km (0.113 R)
• M15: 13,311,967 km (0.086 R)
• M16: 14,467,760 km (0.047 R)
• M17: 15,809,353 km (0.057 R)
• M18: 16,915,779 km (0.076 R)
• M19: 17,359,786 km (0.108 R)
• M20: 18,470,699 km (0.071 R)
• M21: 19,420,646 km (0.116 R)
• M22: 20,189,729 km (0.094 R)
• M23: 22,239,070 km (0.079 R)
• M24: 25,734,424 km (0.12 R)
• M25: 26,492,137 km (0.12 R)
• M26: 30,880,890 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 513.9

Radius: 14.6

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 5.42 AU - 6.34 AU

Year: 9066 Days

Day: 12.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 57,726,539 km

• M1: 181,612 km (0.081 R)
• M2: 688,749 km (0.036 R)
• M3: 1,500,018 km (0.118 R)
• M4: 1,968,110 km (0.114 R)
• M5: 2,517,433 km (0.083 R)
• M6: 3,233,857 km (0.065 R)
• M7: 4,109,154 km (0.114 R)
• M8: 4,589,663 km (0.06 R)
• M9: 5,794,225 km (0.119 R)
• M10: 7,012,999 km (0.118 R)
• M11: 7,703,243 km (0.118 R)
• M12: 9,445,909 km (0.097 R)
• M13: 12,179,660 km (0.107 R)
• M14: 14,903,389 km (0.049 R)
• M15: 15,981,690 km (0.112 R)
• M16: 18,579,756 km (0.047 R)
• M17: 19,381,751 km (0.109 R)
• M18: 20,282,779 km (0.067 R)
• M19: 22,087,677 km (0.083 R)
• M20: 25,567,323 km (0.074 R)
• M21: 28,814,195 km (0.083 R)
• M22: 33,062,177 km (0.04 R)
• M23: 35,557,020 km (0.098 R)
• M24: 37,942,358 km (0.049 R)
• M25: 40,432,565 km (0.082 R)

Asteroid Belt

Center: 6.44 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 6.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 866.6

Radius: 4.9

Gravity: 36.09 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 5.56 AU - 8.42 AU

Year: 11750 Days

Day: 23.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 57,726,539 km

• M1: 61,186 km (0.096 R)
• M2: 259,403 km (0.112 R)
• M3: 414,386 km (0.084 R)
• M4: 753,375 km (0.04 R)
• M5: 1,098,048 km (0.091 R)
• M6: 1,649,317 km (0.067 R)
• M7: 1,846,187 km (0.078 R)
• M8: 2,491,253 km (0.107 R)
• M9: 3,029,506 km (0.117 R)
• M10: 3,779,291 km (0.103 R)
• M11: 9,242,456 km (0.105 R)
• M12: 13,409,056 km (0.117 R)
• M13: 15,751,609 km (0.094 R)
• M14: 19,503,074 km (0.106 R)
• M15: 20,875,036 km (0.085 R)
• M16: 21,494,970 km (0.05 R)
• M17: 22,036,066 km (0.095 R)
• M18: 23,333,827 km (0.104 R)
• M19: 25,675,632 km (0.083 R)
• M20: 26,387,120 km (0.091 R)
• M21: 33,392,190 km (0.1 R)
• M22: 36,230,061 km (0.117 R)
• M23: 37,124,656 km (0.085 R)
• M24: 44,091,579 km (0.044 R)
• M25: 52,528,151 km (0.117 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: 318 - 19,580 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit