🌌 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 - Gas Giant

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 803.5

Radius: 11.9

Gravity: 5.67 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.57 AU - 0.73 AU

Year: 362 Days

Day: 14.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 143.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 54,766,404 km

• M1: 147,952 km (0.068 R)
• M2: 792,719 km (0.068 R)
• M3: 1,321,996 km (0.09 R)
• M4: 1,737,579 km (0.104 R)
• M5: 2,164,831 km (0.097 R)
• M6: 2,576,075 km (0.109 R)
• M7: 3,082,464 km (0.077 R)
• M8: 3,594,538 km (0.105 R)
• M9: 3,992,917 km (0.111 R)
• M10: 4,462,355 km (0.109 R)
• M11: 4,893,945 km (0.09 R)
• M12: 5,448,803 km (0.098 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400

Radius: 11.2

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.61 AU - 0.81 AU

Year: 413 Days

Day: 5.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,766,404 km

• M1: 139,276 km (0.116 R)
• M2: 557,102 km (0.068 R)
• M3: 1,027,438 km (0.081 R)
• M4: 1,397,992 km (0.115 R)
• M5: 1,969,456 km (0.033 R)
• M6: 2,413,163 km (0.105 R)
• M7: 2,883,948 km (0.102 R)
• M8: 3,349,646 km (0.057 R)
• M9: 3,889,395 km (0.068 R)
• M10: 4,250,823 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 809

Radius: 11.7

Gravity: 5.91 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.83 AU - 1.03 AU

Year: 619 Days

Day: 10.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 54,766,404 km

• M1: 145,559 km (0.103 R)
• M2: 559,197 km (0.118 R)
• M3: 933,192 km (0.111 R)
• M4: 1,602,193 km (0.106 R)
• M5: 2,224,371 km (0.095 R)
• M6: 2,647,284 km (0.063 R)
• M7: 3,038,482 km (0.111 R)
• M8: 3,429,082 km (0.101 R)
• M9: 3,824,918 km (0.119 R)
• M10: 4,236,163 km (0.109 R)
• M11: 4,742,253 km (0.114 R)
• M12: 5,288,584 km (0.119 R)
• M13: 5,991,544 km (0.1 R)
• M14: 6,651,570 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 459.3

Radius: 13.8

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.58 AU - 1.82 AU

Year: 1530 Days

Day: 10.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,766,404 km

• M1: 171,738 km (0.042 R)
• M2: 604,525 km (0.112 R)
• M3: 1,158,785 km (0.041 R)
• M4: 1,632,711 km (0.105 R)
• M5: 2,373,969 km (0.072 R)
• M6: 2,990,910 km (0.109 R)
• M7: 3,603,663 km (0.105 R)
• M8: 4,108,706 km (0.041 R)
• M9: 4,792,517 km (0.099 R)
• M10: 5,344,085 km (0.09 R)
• M11: 5,850,474 km (0.036 R)
• M12: 6,551,938 km (0.099 R)
• M13: 7,827,858 km (0.082 R)
• M14: 8,483,097 km (0.112 R)
• M15: 9,293,319 km (0.093 R)
• M16: 11,859,820 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 69.8

Radius: 11.3

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 1.81 AU - 2.11 AU

Year: 1894 Days

Day: 5.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 54,766,404 km

• M1: 140,772 km (0.099 R)
• M2: 878,289 km (0.106 R)
• M3: 2,075,222 km (0.083 R)
• M4: 2,700,242 km (0.071 R)
• M5: 3,358,023 km (0.114 R)
• M6: 5,315,960 km (0.103 R)
• M7: 6,854,126 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 812.6

Radius: 13.2

Gravity: 4.66 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.98 AU - 2.46 AU

Year: 2283 Days

Day: 10 Hours

Environment

Temp: -202 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 54,766,404 km

• M1: 164,558 km (0.083 R)
• M2: 723,904 km (0.113 R)
• M3: 1,375,852 km (0.1 R)
• M4: 2,102,598 km (0.11 R)
• M5: 2,977,596 km (0.06 R)
• M6: 3,553,249 km (0.082 R)
• M7: 5,206,455 km (0.113 R)
• M8: 5,690,105 km (0.106 R)
• M9: 6,554,332 km (0.053 R)
• M10: 7,996,754 km (0.096 R)
• M11: 8,609,806 km (0.118 R)
• M12: 10,486,960 km (0.087 R)
• M13: 12,325,817 km (0.091 R)
• M14: 14,138,495 km (0.047 R)
• M15: 14,939,891 km (0.102 R)
• M16: 16,893,190 km (0.09 R)
• M17: 18,231,642 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 581.9

Radius: 14

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 3.86 AU - 4.22 AU

Year: 5605 Days

Day: 14.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 54,766,404 km

• M1: 174,132 km (0.099 R)
• M2: 946,057 km (0.079 R)
• M3: 1,871,320 km (0.108 R)
• M4: 2,480,333 km (0.098 R)
• M5: 3,319,577 km (0.06 R)
• M6: 4,341,330 km (0.096 R)
• M7: 5,196,581 km (0.103 R)
• M8: 5,947,263 km (0.065 R)
• M9: 7,139,409 km (0.078 R)
• M10: 8,256,157 km (0.082 R)
• M11: 9,198,474 km (0.085 R)
• M12: 10,790,195 km (0.102 R)
• M13: 11,916,667 km (0.045 R)
• M14: 12,710,284 km (0.1 R)
• M15: 13,538,757 km (0.075 R)
• M16: 17,593,906 km (0.113 R)
• M17: 18,754,786 km (0.11 R)
• M18: 20,242,387 km (0.118 R)
• M19: 22,395,998 km (0.041 R)
• M20: 24,382,508 km (0.12 R)
• M21: 25,337,990 km (0.08 R)
• M22: 26,318,305 km (0.095 R)
• M23: 28,094,630 km (0.094 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 364.4

Radius: 5

Gravity: 14.58 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 7.89 AU - 8.87 AU

Year: 16745 Days

Day: 25 Hours

Environment

Temp: -240 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 54,766,404 km

• M1: 282,142 km (0.079 R)
• M2: 506,389 km (0.107 R)
• M3: 1,237,474 km (0.1 R)
• M4: 1,452,296 km (0.111 R)
• M5: 3,537,092 km (0.065 R)
• M6: 4,086,266 km (0.085 R)
• M7: 4,818,099 km (0.052 R)
• M8: 5,013,922 km (0.081 R)
• M9: 5,705,513 km (0.043 R)
• M10: 8,820,440 km (0.079 R)
• M11: 11,760,487 km (0.057 R)
• M12: 14,135,353 km (0.092 R)
• M13: 19,724,330 km (0.097 R)
• M14: 22,956,392 km (0.095 R)
• M15: 24,361,564 km (0.107 R)
• M16: 26,524,600 km (0.11 R)
• M17: 28,705,737 km (0.084 R)
• M18: 46,081,081 km (0.104 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 397 - 19,512 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit