🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.41 AU - 0.67 AU

Year: 256 Days

Day: 33.5 Hours

Environment

Temp: -113 °C

Axial Tilt: 57.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.54 AU - 0.72 AU

Year: 323 Days

Day: 20 Hours

Environment

Temp: -132 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 54,060,338 km

• M1: 13,314 km (0.086 R)
• M2: 77,342 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 937.1

Radius: 13.8

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.73 AU - 1.19 AU

Year: 607 Days

Day: 13.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 54,060,338 km

• M1: 175,777 km (0.077 R)
• M2: 763,697 km (0.091 R)
• M3: 1,239,418 km (0.109 R)
• M4: 1,670,260 km (0.041 R)
• M5: 2,165,280 km (0.052 R)
• M6: 2,713,855 km (0.111 R)
• M7: 3,719,302 km (0.118 R)
• M8: 4,170,639 km (0.071 R)
• M9: 5,472,440 km (0.103 R)
• M10: 6,563,307 km (0.096 R)
• M11: 7,293,495 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.5

Radius: 11.5

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.9 AU - 1.18 AU

Year: 685 Days

Day: 6 Hours

Environment

Temp: -163 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 54,060,338 km

• M1: 143,315 km (0.104 R)
• M2: 526,136 km (0.096 R)
• M3: 936,782 km (0.087 R)
• M4: 1,747,154 km (0.068 R)
• M5: 2,118,755 km (0.091 R)
• M6: 2,839,218 km (0.055 R)
• M7: 3,998,153 km (0.106 R)
• M8: 4,432,136 km (0.039 R)
• M9: 4,931,045 km (0.109 R)
• M10: 5,449,102 km (0.047 R)
• M11: 6,157,299 km (0.104 R)
• M12: 7,160,053 km (0.103 R)
• M13: 7,577,132 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 755.2

Radius: 14.6

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 3.03 AU - 3.65 AU

Year: 3941 Days

Day: 7.9 Hours

Environment

Temp: -203 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 54,060,338 km

• M1: 181,612 km (0.081 R)
• M2: 646,263 km (0.06 R)
• M3: 1,175,540 km (0.099 R)
• M4: 2,606,743 km (0.083 R)
• M5: 3,123,604 km (0.076 R)
• M6: 3,963,446 km (0.058 R)
• M7: 4,676,579 km (0.084 R)
• M8: 5,528,689 km (0.082 R)
• M9: 6,123,340 km (0.114 R)
• M10: 7,508,916 km (0.119 R)
• M11: 8,276,053 km (0.059 R)
• M12: 9,210,591 km (0.083 R)
• M13: 10,131,516 km (0.117 R)
• M14: 11,970,822 km (0.101 R)
• M15: 14,864,792 km (0.048 R)
• M16: 16,647,251 km (0.07 R)
• M17: 17,650,305 km (0.093 R)
• M18: 19,261,923 km (0.077 R)
• M19: 20,235,206 km (0.083 R)
• M20: 24,012,403 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 361.7

Radius: 9.5

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 3.27 AU - 4.21 AU

Year: 4670 Days

Day: 14.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 168.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,060,338 km

• M1: 122,371 km (0.12 R)
• M2: 689,945 km (0.12 R)
• M3: 1,070,971 km (0.091 R)
• M4: 1,729,052 km (0.072 R)
• M5: 2,303,658 km (0.064 R)
• M6: 3,711,074 km (0.089 R)
• M7: 4,907,708 km (0.03 R)
• M8: 6,910,674 km (0.091 R)
• M9: 7,445,935 km (0.091 R)
• M10: 9,789,535 km (0.057 R)
• M11: 10,464,969 km (0.091 R)
• M12: 11,086,549 km (0.098 R)
• M13: 15,187,026 km (0.04 R)
• M14: 16,640,968 km (0.059 R)
• M15: 19,205,524 km (0.109 R)
• M16: 22,224,409 km (0.078 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383.6

Radius: 8.8

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 4.77 AU - 5.83 AU

Year: 7878 Days

Day: 10.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 54,060,338 km

• M1: 109,506 km (0.104 R)
• M2: 438,621 km (0.077 R)
• M3: 727,494 km (0.086 R)
• M4: 1,395,150 km (0.106 R)
• M5: 1,703,022 km (0.09 R)
• M6: 1,982,022 km (0.118 R)
• M7: 2,688,124 km (0.077 R)
• M8: 3,069,599 km (0.109 R)
• M9: 3,732,317 km (0.07 R)
• M10: 4,671,194 km (0.102 R)
• M11: 5,457,929 km (0.029 R)
• M12: 5,821,152 km (0.057 R)
• M13: 7,149,881 km (0.098 R)
• M14: 7,585,210 km (0.104 R)
• M15: 8,076,639 km (0.116 R)
• M16: 11,049,000 km (0.059 R)
• M17: 12,081,674 km (0.07 R)
• M18: 14,394,756 km (0.063 R)
• M19: 16,235,259 km (0.097 R)
• M20: 16,671,636 km (0.028 R)
• M21: 16,988,035 km (0.115 R)
• M22: 28,910,387 km (0.108 R)
• M23: 30,578,702 km (0.12 R)
• M24: 31,436,497 km (0.11 R)
• M25: 32,017,235 km (0.056 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 283.8

Radius: 3.8

Gravity: 19.65 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 7.6 AU - 11.2 AU

Year: 18608 Days

Day: 20.4 Hours

Environment

Temp: -226 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 54,060,338 km

• M1: 160,519 km (0.091 R)
• M2: 394,789 km (0.051 R)
• M3: 748,289 km (0.103 R)
• M4: 1,625,381 km (0.092 R)
• M5: 4,077,589 km (0.095 R)
• M6: 5,799,461 km (0.087 R)
• M7: 7,424,991 km (0.086 R)
• M8: 7,729,872 km (0.105 R)
• M9: 8,134,235 km (0.075 R)
• M10: 20,460,650 km (0.066 R)
• M11: 22,291,579 km (0.088 R)
• M12: 27,084,395 km (0.119 R)
• M13: 27,391,969 km (0.102 R)
• M14: 27,805,756 km (0.053 R)
• M15: 37,107,153 km (0.09 R)
• M16: 38,253,372 km (0.119 R)
• M17: 42,657,534 km (0.098 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 520 - 18,471 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit