🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.94

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.49 AU - 0.71 AU

Year: 300 Days

Day: 39.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 27.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39

Radius: 11.4

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.71 AU - 1.15 AU

Year: 579 Days

Day: 11.3 Hours

Environment

Temp: -153 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 65,912,613 km

• M1: 141,819 km (0.102 R)
• M2: 750,832 km (0.091 R)
• M3: 1,341,743 km (0.095 R)
• M4: 1,812,977 km (0.063 R)
• M5: 2,337,317 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.1

Radius: 8.7

Gravity: 12.45 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.98 AU - 1.38 AU

Year: 828 Days

Day: 5.4 Hours

Environment

Temp: -172 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,912,613 km

• M1: 108,309 km (0.12 R)
• M2: 418,276 km (0.088 R)
• M3: 702,362 km (0.047 R)
• M4: 1,265,000 km (0.11 R)
• M5: 1,711,699 km (0.109 R)
• M6: 2,133,864 km (0.037 R)
• M7: 2,437,847 km (0.035 R)
• M8: 2,709,068 km (0.1 R)
• M9: 3,106,998 km (0.079 R)
• M10: 3,632,535 km (0.038 R)
• M11: 3,940,558 km (0.096 R)
• M12: 4,770,078 km (0.11 R)
• M13: 5,630,265 km (0.027 R)
• M14: 6,065,446 km (0.098 R)
• M15: 7,144,794 km (0.104 R)
• M16: 8,086,363 km (0.115 R)
• M17: 8,506,584 km (0.106 R)
• M18: 9,108,266 km (0.108 R)
• M19: 9,534,471 km (0.11 R)
• M20: 9,914,599 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.5

Radius: 14

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.65 AU - 1.73 AU

Year: 1419 Days

Day: 7.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 65,912,613 km

• M1: 174,431 km (0.067 R)
• M2: 682,765 km (0.055 R)
• M3: 1,247,646 km (0.109 R)
• M4: 1,927,868 km (0.078 R)
• M5: 2,411,069 km (0.073 R)
• M6: 3,432,673 km (0.088 R)
• M7: 3,901,512 km (0.076 R)
• M8: 4,528,627 km (0.101 R)
• M9: 5,265,546 km (0.118 R)
• M10: 7,110,985 km (0.109 R)
• M11: 7,766,074 km (0.065 R)
• M12: 10,518,974 km (0.117 R)
• M13: 12,115,333 km (0.062 R)
• M14: 12,734,220 km (0.095 R)
• M15: 13,171,943 km (0.066 R)
• M16: 14,077,459 km (0.041 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 874.7

Radius: 12.7

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.41 AU - 1.99 AU

Year: 1431 Days

Day: 5.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 65,912,613 km

• M1: 157,975 km (0.054 R)
• M2: 720,763 km (0.09 R)
• M3: 1,149,061 km (0.113 R)
• M4: 1,823,448 km (0.097 R)
• M5: 2,423,037 km (0.087 R)
• M6: 3,062,418 km (0.069 R)
• M7: 3,560,130 km (0.085 R)
• M8: 4,351,952 km (0.087 R)
• M9: 4,901,724 km (0.101 R)
• M10: 6,117,655 km (0.095 R)
• M11: 7,174,415 km (0.083 R)
• M12: 8,707,643 km (0.081 R)
• M13: 9,583,838 km (0.091 R)
• M14: 10,312,828 km (0.11 R)
• M15: 11,548,656 km (0.119 R)
• M16: 12,183,400 km (0.114 R)
• M17: 12,880,676 km (0.096 R)
• M18: 13,604,430 km (0.12 R)
• M19: 14,059,956 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 135.1

Radius: 9

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 1.59 AU - 2.49 AU

Year: 1881 Days

Day: 11.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 65,912,613 km

• M1: 111,899 km (0.084 R)
• M2: 1,684,023 km (0.105 R)
• M3: 2,417,950 km (0.101 R)
• M4: 3,242,384 km (0.088 R)
• M5: 4,131,295 km (0.071 R)
• M6: 5,436,985 km (0.09 R)
• M7: 8,092,646 km (0.054 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83.3

Radius: 11.2

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 4.23 AU - 5.61 AU

Year: 7046 Days

Day: 12.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 65,912,613 km

• M1: 139,276 km (0.113 R)
• M2: 557,850 km (0.115 R)
• M3: 1,061,846 km (0.1 R)
• M4: 2,242,472 km (0.076 R)
• M5: 3,914,527 km (0.08 R)
• M6: 4,355,093 km (0.112 R)
• M7: 6,297,622 km (0.03 R)
• M8: 8,727,091 km (0.044 R)
• M9: 14,020,163 km (0.082 R)
• M10: 16,447,388 km (0.054 R)
• M11: 17,706,703 km (0.053 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 799.9

Radius: 13.4

Gravity: 4.45 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 4.69 AU - 5.39 AU

Year: 7306 Days

Day: 10 Hours

Environment

Temp: -224 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 65,912,613 km

• M1: 166,652 km (0.053 R)
• M2: 583,282 km (0.092 R)
• M3: 1,256,622 km (0.04 R)
• M4: 1,945,072 km (0.08 R)
• M5: 2,936,157 km (0.088 R)
• M6: 3,363,708 km (0.109 R)
• M7: 4,109,902 km (0.117 R)
• M8: 5,052,668 km (0.064 R)
• M9: 5,639,690 km (0.08 R)
• M10: 6,306,448 km (0.104 R)
• M11: 7,137,614 km (0.087 R)
• M12: 8,843,029 km (0.082 R)
• M13: 13,679,229 km (0.116 R)
• M14: 14,761,271 km (0.081 R)
• M15: 16,357,929 km (0.117 R)
• M16: 16,959,911 km (0.085 R)
• M17: 17,438,474 km (0.086 R)
• M18: 18,279,663 km (0.1 R)
• M19: 18,710,355 km (0.067 R)
• M20: 23,230,605 km (0.115 R)
• M21: 24,595,386 km (0.028 R)
• M22: 26,193,839 km (0.057 R)
• M23: 27,860,509 km (0.095 R)
• M24: 32,754,903 km (0.063 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 806.9

Radius: 6.9

Gravity: 16.95 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 6.75 AU - 9.43 AU

Year: 14857 Days

Day: 18.4 Hours

Environment

Temp: -222 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 65,912,613 km

• M1: 93,050 km (0.064 R)
• M2: 381,475 km (0.071 R)
• M3: 1,216,231 km (0.106 R)
• M4: 1,691,204 km (0.119 R)
• M5: 2,836,226 km (0.082 R)
• M6: 5,174,740 km (0.078 R)
• M7: 6,044,352 km (0.114 R)
• M8: 7,973,417 km (0.068 R)
• M9: 13,674,143 km (0.085 R)
• M10: 16,311,553 km (0.066 R)
• M11: 16,940,612 km (0.073 R)
• M12: 17,504,148 km (0.082 R)
• M13: 17,749,488 km (0.119 R)
• M14: 19,010,748 km (0.103 R)
• M15: 20,061,972 km (0.067 R)
• M16: 24,655,524 km (0.107 R)
• M17: 25,798,901 km (0.087 R)
• M18: 26,977,283 km (0.097 R)
• M19: 29,440,861 km (0.065 R)
• M20: 31,928,674 km (0.059 R)
• M21: 35,852,027 km (0.113 R)
• M22: 37,997,410 km (0.088 R)
• M23: 38,823,639 km (0.07 R)
• M24: 40,654,568 km (0.073 R)
• M25: 42,101,628 km (0.057 R)
• M26: 42,394,989 km (0.035 R)
• M27: 43,432,899 km (0.048 R)
• M28: 59,239,859 km (0.045 R)
• M29: 63,186,401 km (0.113 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 532 - 16,498 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit