🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.63

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.51 AU - 0.79 AU

Year: 338 Days

Day: 19.6 Hours

Environment

Temp: -131 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 18,411,512 km

• M1: 678,875 km (0.059 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 551.6

Radius: 8

Gravity: 8.62 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 1.03 AU - 1.13 AU

Year: 725 Days

Day: 7.3 Hours

Environment

Temp: -160 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 18,411,512 km

• M1: 99,483 km (0.097 R)
• M2: 422,016 km (0.086 R)
• M3: 716,424 km (0.103 R)
• M4: 1,073,365 km (0.115 R)
• M5: 1,372,560 km (0.099 R)
• M6: 1,687,015 km (0.101 R)
• M7: 1,967,661 km (0.065 R)
• M8: 2,463,279 km (0.104 R)
• M9: 3,606,505 km (0.117 R)
• M10: 3,857,830 km (0.101 R)
• M11: 4,120,973 km (0.076 R)
• M12: 4,782,195 km (0.039 R)
• M13: 5,349,620 km (0.107 R)
• M14: 5,733,638 km (0.087 R)
• M15: 6,234,491 km (0.045 R)
• M16: 6,722,330 km (0.113 R)
• M17: 7,083,160 km (0.119 R)
• M18: 7,614,532 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 688.4

Radius: 12.3

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.13 AU - 1.29 AU

Year: 859 Days

Day: 13.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 111.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 18,411,512 km

• M1: 153,188 km (0.101 R)
• M2: 571,464 km (0.094 R)
• M3: 1,275,172 km (0.03 R)
• M4: 1,856,210 km (0.097 R)
• M5: 2,597,917 km (0.099 R)
• M6: 3,187,482 km (0.088 R)
• M7: 4,126,807 km (0.108 R)
• M8: 4,584,876 km (0.057 R)
• M9: 5,279,758 km (0.087 R)
• M10: 5,702,072 km (0.067 R)
• M11: 6,293,134 km (0.064 R)
• M12: 8,520,945 km (0.068 R)
• M13: 9,158,232 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.8

Radius: 9.4

Gravity: 8.19 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.54 AU - 2.18 AU

Year: 1638 Days

Day: 12 Hours

Environment

Temp: -177 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 18,411,512 km

• M1: 116,836 km (0.096 R)
• M2: 749,186 km (0.065 R)
• M3: 1,130,810 km (0.109 R)
• M4: 1,546,543 km (0.105 R)
• M5: 1,864,737 km (0.04 R)
• M6: 2,555,431 km (0.113 R)
• M7: 3,155,468 km (0.059 R)
• M8: 3,605,757 km (0.073 R)
• M9: 4,209,684 km (0.047 R)
• M10: 4,675,532 km (0.106 R)
• M11: 5,047,283 km (0.109 R)
• M12: 5,438,631 km (0.101 R)
• M13: 5,780,163 km (0.078 R)
• M14: 6,331,730 km (0.063 R)
• M15: 6,787,405 km (0.112 R)
• M16: 8,346,963 km (0.12 R)
• M17: 8,648,702 km (0.101 R)
• M18: 9,146,863 km (0.105 R)
• M19: 10,615,764 km (0.12 R)
• M20: 10,970,311 km (0.048 R)
• M21: 11,443,190 km (0.084 R)
• M22: 11,929,682 km (0.057 R)
• M23: 12,313,251 km (0.067 R)
• M24: 13,308,077 km (0.088 R)
• M25: 13,679,080 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 537.4

Radius: 12.1

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.58 AU - 2.22 AU

Year: 1691 Days

Day: 11.8 Hours

Environment

Temp: -187 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 18,411,512 km

• M1: 150,495 km (0.073 R)
• M2: 556,504 km (0.112 R)
• M3: 1,006,046 km (0.039 R)
• M4: 1,409,661 km (0.091 R)
• M5: 1,791,584 km (0.101 R)
• M6: 2,745,271 km (0.07 R)
• M7: 3,169,829 km (0.081 R)
• M8: 3,720,948 km (0.072 R)
• M9: 4,189,189 km (0.059 R)
• M10: 4,794,911 km (0.066 R)
• M11: 5,350,966 km (0.114 R)
• M12: 6,111,971 km (0.064 R)
• M13: 7,046,509 km (0.041 R)
• M14: 9,291,524 km (0.077 R)
• M15: 9,863,436 km (0.114 R)
• M16: 11,007,711 km (0.087 R)
• M17: 12,126,254 km (0.109 R)
• M18: 13,478,619 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 861.5

Radius: 9.8

Gravity: 8.97 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 1.82 AU - 2.84 AU

Year: 2296 Days

Day: 9.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 18,411,512 km

• M1: 121,922 km (0.082 R)
• M2: 480,658 km (0.052 R)
• M3: 2,136,407 km (0.109 R)
• M4: 2,864,201 km (0.113 R)
• M5: 4,761,551 km (0.089 R)
• M6: 7,022,573 km (0.103 R)
• M7: 8,686,101 km (0.045 R)
• M8: 9,131,454 km (0.104 R)
• M9: 10,791,392 km (0.099 R)
• M10: 12,514,161 km (0.12 R)
• M11: 13,038,352 km (0.074 R)
• M12: 13,395,891 km (0.105 R)
• M13: 14,083,892 km (0.073 R)
• M14: 15,135,415 km (0.073 R)
• M15: 16,238,400 km (0.105 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136.1

Radius: 12.9

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 3.67 AU - 4.51 AU

Year: 5341 Days

Day: 11.9 Hours

Environment

Temp: -203 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 18,411,512 km

• M1: 160,519 km (0.111 R)
• M2: 610,210 km (0.097 R)
• M3: 1,026,241 km (0.096 R)
• M4: 1,611,468 km (0.094 R)
• M5: 2,741,531 km (0.099 R)
• M6: 3,434,767 km (0.118 R)
• M7: 4,024,332 km (0.087 R)
• M8: 4,967,248 km (0.117 R)
• M9: 5,625,179 km (0.108 R)
• M10: 8,888,357 km (0.074 R)
• M11: 9,716,830 km (0.101 R)
• M12: 10,223,518 km (0.076 R)
• M13: 14,187,712 km (0.115 R)
• M14: 17,338,244 km (0.073 R)
• M15: 18,411,459 km (0.116 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 254 - 11,004 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit