🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.53 AU - 0.61 AU

Year: 282 Days

Day: 33.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.5 AU - 0.72 AU

Year: 313 Days

Day: 36.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 25.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,880,605 km

• M1: 171,589 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 862.1

Radius: 12.2

Gravity: 5.79 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.75 AU - 1.21 AU

Year: 636 Days

Day: 9.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 41,880,605 km

• M1: 151,692 km (0.037 R)
• M2: 585,676 km (0.115 R)
• M3: 1,030,580 km (0.086 R)
• M4: 1,426,864 km (0.092 R)
• M5: 1,944,922 km (0.056 R)
• M6: 2,576,375 km (0.096 R)
• M7: 3,720,499 km (0.113 R)
• M8: 4,220,455 km (0.088 R)
• M9: 4,934,187 km (0.075 R)
• M10: 5,802,752 km (0.096 R)
• M11: 6,519,176 km (0.11 R)
• M12: 6,963,781 km (0.099 R)
• M13: 7,565,164 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 90.5

Radius: 12.1

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.17 AU - 1.89 AU

Year: 1241 Days

Day: 12 Hours

Environment

Temp: -183 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 41,880,605 km

• M1: 150,944 km (0.116 R)
• M2: 860,487 km (0.1 R)
• M3: 1,398,590 km (0.119 R)
• M4: 2,071,631 km (0.074 R)
• M5: 2,962,187 km (0.058 R)
• M6: 3,429,382 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 741

Radius: 11.7

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 1.28 AU - 2.02 AU

Year: 1390 Days

Day: 14.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,880,605 km

• M1: 145,559 km (0.106 R)
• M2: 602,131 km (0.102 R)
• M3: 1,273,227 km (0.116 R)
• M4: 1,837,511 km (0.049 R)
• M5: 2,271,344 km (0.112 R)
• M6: 2,787,158 km (0.095 R)
• M7: 3,569,256 km (0.035 R)
• M8: 3,934,574 km (0.081 R)
• M9: 4,343,275 km (0.106 R)
• M10: 4,721,907 km (0.032 R)
• M11: 5,395,098 km (0.104 R)
• M12: 7,372,931 km (0.119 R)
• M13: 7,803,773 km (0.041 R)
• M14: 8,251,370 km (0.068 R)
• M15: 9,015,516 km (0.108 R)
• M16: 10,249,249 km (0.06 R)
• M17: 12,250,570 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.8

Radius: 8.6

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.95 AU - 3.01 AU

Year: 2562 Days

Day: 6.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 41,880,605 km

• M1: 107,112 km (0.029 R)
• M2: 391,797 km (0.114 R)
• M3: 762,949 km (0.07 R)
• M4: 1,804,898 km (0.073 R)
• M5: 2,189,365 km (0.115 R)
• M6: 2,660,299 km (0.091 R)
• M7: 3,234,904 km (0.052 R)
• M8: 4,332,803 km (0.052 R)
• M9: 5,008,986 km (0.076 R)
• M10: 6,389,175 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 63.5

Radius: 9.2

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 5.05 AU - 6.31 AU

Year: 8880 Days

Day: 7 Hours

Environment

Temp: -219 °C

Axial Tilt: 143.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 41,880,605 km

• M1: 119,828 km (0.075 R)
• M2: 954,285 km (0.076 R)
• M3: 1,399,338 km (0.05 R)
• M4: 1,882,390 km (0.07 R)
• M5: 2,304,555 km (0.099 R)
• M6: 2,635,466 km (0.107 R)
• M7: 4,269,972 km (0.075 R)
• M8: 4,637,684 km (0.051 R)
• M9: 5,387,468 km (0.106 R)
• M10: 6,027,897 km (0.116 R)
• M11: 7,994,809 km (0.099 R)
• M12: 9,791,181 km (0.081 R)
• M13: 10,902,244 km (0.12 R)
• M14: 13,834,063 km (0.074 R)
• M15: 15,531,101 km (0.08 R)
• M16: 17,635,495 km (0.052 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 432.8

Radius: 7.7

Gravity: 7.3 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 5.48 AU - 7.04 AU

Year: 10275 Days

Day: 15.9 Hours

Environment

Temp: -219 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 41,880,605 km

• M1: 96,939 km (0.073 R)
• M2: 420,071 km (0.047 R)
• M3: 695,331 km (0.119 R)
• M4: 1,723,667 km (0.068 R)
• M5: 2,161,240 km (0.109 R)
• M6: 3,060,772 km (0.069 R)
• M7: 3,441,200 km (0.118 R)
• M8: 4,545,681 km (0.114 R)
• M9: 4,804,036 km (0.112 R)
• M10: 5,194,487 km (0.047 R)
• M11: 5,541,255 km (0.105 R)
• M12: 6,142,189 km (0.086 R)
• M13: 10,494,291 km (0.048 R)
• M14: 10,845,247 km (0.051 R)
• M15: 14,862,249 km (0.089 R)
• M16: 15,305,209 km (0.1 R)
• M17: 16,217,606 km (0.118 R)
• M18: 18,293,875 km (0.113 R)
• M19: 18,949,861 km (0.071 R)
• M20: 20,231,466 km (0.069 R)
• M21: 22,137,792 km (0.109 R)
• M22: 24,950,382 km (0.082 R)
• M23: 29,354,693 km (0.109 R)
• M24: 32,845,708 km (0.112 R)
• M25: 33,166,446 km (0.09 R)
• M26: 33,489,279 km (0.119 R)
• M27: 35,920,992 km (0.055 R)
• M28: 38,586,527 km (0.102 R)
• M29: 40,272,046 km (0.069 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: 183 - 19,521 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit