🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.26

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.42 AU - 0.62 AU

Year: 242 Days

Day: 45 Hours

Environment

Temp: -114 °C

Axial Tilt: 0.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266.8

Radius: 9.3

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.8 AU - 1.16 AU

Year: 626 Days

Day: 13.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,566,489 km

• M1: 115,639 km (0.107 R)
• M2: 560,543 km (0.116 R)
• M3: 888,911 km (0.087 R)
• M4: 1,254,378 km (0.057 R)
• M5: 1,620,743 km (0.1 R)
• M6: 2,315,027 km (0.087 R)
• M7: 2,831,738 km (0.084 R)
• M8: 3,577,932 km (0.089 R)
• M9: 3,977,957 km (0.109 R)
• M10: 5,003,600 km (0.111 R)
• M11: 5,376,547 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.9

Radius: 11.1

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.71 AU - 2.29 AU

Year: 1826 Days

Day: 7.6 Hours

Environment

Temp: -185 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 74,566,489 km

• M1: 138,079 km (0.077 R)
• M2: 659,278 km (0.064 R)
• M3: 1,014,423 km (0.109 R)
• M4: 1,595,012 km (0.07 R)
• M5: 2,378,905 km (0.119 R)
• M6: 2,973,108 km (0.112 R)
• M7: 3,543,674 km (0.077 R)
• M8: 3,900,016 km (0.082 R)
• M9: 4,266,830 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.1

Radius: 10.4

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 3.57 AU - 4.31 AU

Year: 5050 Days

Day: 13.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 74,566,489 km

• M1: 129,402 km (0.027 R)
• M2: 743,651 km (0.117 R)
• M3: 1,562,849 km (0.06 R)
• M4: 2,061,907 km (0.043 R)
• M5: 3,765,977 km (0.059 R)
• M6: 4,431,089 km (0.03 R)
• M7: 6,498,382 km (0.086 R)
• M8: 7,224,081 km (0.114 R)
• M9: 8,724,847 km (0.057 R)
• M10: 14,256,079 km (0.11 R)
• M11: 15,046,703 km (0.104 R)
• M12: 15,370,882 km (0.075 R)
• M13: 16,888,403 km (0.099 R)
• M14: 23,963,784 km (0.098 R)
• M15: 25,156,677 km (0.033 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.9

Radius: 12.6

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 3.11 AU - 4.79 AU

Year: 5069 Days

Day: 11.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 74,566,489 km

• M1: 157,078 km (0.09 R)
• M2: 776,114 km (0.072 R)
• M3: 1,490,144 km (0.107 R)
• M4: 2,124,888 km (0.102 R)
• M5: 3,266,170 km (0.092 R)
• M6: 4,346,417 km (0.097 R)
• M7: 6,595,321 km (0.033 R)
• M8: 7,538,536 km (0.034 R)
• M9: 8,946,401 km (0.114 R)
• M10: 11,043,016 km (0.099 R)
• M11: 12,041,731 km (0.063 R)
• M12: 14,323,398 km (0.11 R)
• M13: 18,142,781 km (0.114 R)
• M14: 22,522,109 km (0.054 R)
• M15: 25,032,361 km (0.1 R)
• M16: 26,354,956 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 409.6

Radius: 9.6

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 4.04 AU - 4.58 AU

Year: 5777 Days

Day: 7.8 Hours

Environment

Temp: -205 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 74,566,489 km

• M1: 119,828 km (0.106 R)
• M2: 437,125 km (0.025 R)
• M3: 771,925 km (0.115 R)
• M4: 1,520,812 km (0.081 R)
• M5: 2,352,576 km (0.113 R)
• M6: 3,184,789 km (0.08 R)
• M7: 3,929,338 km (0.069 R)
• M8: 5,394,350 km (0.091 R)
• M9: 7,431,274 km (0.068 R)
• M10: 8,583,776 km (0.085 R)
• M11: 10,018,270 km (0.096 R)
• M12: 10,443,727 km (0.06 R)
• M13: 13,406,812 km (0.11 R)
• M14: 17,370,108 km (0.114 R)
• M15: 17,675,587 km (0.063 R)
• M16: 21,277,305 km (0.107 R)
• M17: 21,839,045 km (0.091 R)
• M18: 24,109,342 km (0.116 R)
• M19: 25,262,592 km (0.117 R)
• M20: 27,512,993 km (0.08 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 803.3

Radius: 3.3

Gravity: 73.76 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 4.64 AU - 7.58 AU

Year: 9752 Days

Day: 21.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 74,566,489 km

• M1: 40,990 km (0.103 R)
• M2: 152,739 km (0.116 R)
• M3: 577,149 km (0.063 R)
• M4: 817,104 km (0.09 R)
• M5: 944,561 km (0.119 R)
• M6: 1,154,896 km (0.115 R)
• M7: 1,368,671 km (0.076 R)
• M8: 1,958,835 km (0.074 R)
• M9: 2,098,260 km (0.119 R)
• M10: 3,032,648 km (0.113 R)
• M11: 3,172,223 km (0.092 R)
• M12: 3,291,752 km (0.12 R)
• M13: 3,853,641 km (0.09 R)
• M14: 5,263,601 km (0.107 R)
• M15: 5,848,379 km (0.086 R)
• M16: 6,590,534 km (0.028 R)
• M17: 6,904,241 km (0.083 R)
• M18: 7,519,088 km (0.083 R)
• M19: 8,169,689 km (0.1 R)
• M20: 8,440,162 km (0.107 R)
• M21: 9,631,410 km (0.079 R)
• M22: 9,984,162 km (0.05 R)
• M23: 11,148,632 km (0.105 R)
• M24: 11,820,476 km (0.108 R)
• M25: 13,617,595 km (0.109 R)
• M26: 15,112,826 km (0.112 R)
• M27: 16,074,441 km (0.099 R)
• M28: 16,642,015 km (0.104 R)
• M29: 23,159,546 km (0.114 R)
• M30: 25,184,802 km (0.105 R)
• M31: 27,225,167 km (0.055 R)
• M32: 27,726,619 km (0.095 R)
• M33: 28,851,745 km (0.033 R)
• M34: 30,974,538 km (0.119 R)
• M35: 31,741,377 km (0.111 R)
• M36: 31,962,782 km (0.076 R)
• M37: 35,171,806 km (0.056 R)
• M38: 42,622,977 km (0.111 R)
• M39: 43,434,994 km (0.114 R)
• M40: 44,533,491 km (0.086 R)
• M41: 47,939,984 km (0.107 R)
• M42: 48,231,401 km (0.08 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 710.2

Radius: 4.9

Gravity: 29.58 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 9.36 AU - 9.74 AU

Year: 19055 Days

Day: 20.2 Hours

Environment

Temp: -235 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 74,566,489 km

• M1: 69,713 km (0.053 R)
• M2: 224,696 km (0.045 R)
• M3: 1,340,397 km (0.114 R)
• M4: 1,954,347 km (0.062 R)
• M5: 2,666,133 km (0.118 R)
• M6: 3,624,756 km (0.058 R)
• M7: 4,652,643 km (0.115 R)
• M8: 5,580,898 km (0.113 R)
• M9: 6,986,969 km (0.115 R)
• M10: 9,770,835 km (0.113 R)
• M11: 11,534,145 km (0.089 R)
• M12: 12,592,550 km (0.088 R)
• M13: 15,053,735 km (0.102 R)
• M14: 15,207,671 km (0.088 R)
• M15: 16,315,593 km (0.112 R)
• M16: 19,047,998 km (0.104 R)
• M17: 22,771,788 km (0.1 R)
• M18: 23,384,690 km (0.06 R)
• M19: 25,180,762 km (0.085 R)
• M20: 25,507,035 km (0.098 R)
• M21: 26,614,808 km (0.057 R)
• M22: 30,744,606 km (0.062 R)
• M23: 31,242,169 km (0.055 R)
• M24: 33,942,859 km (0.051 R)
• M25: 35,281,910 km (0.118 R)
• M26: 45,494,508 km (0.101 R)
• M27: 47,616,105 km (0.086 R)
• M28: 48,617,214 km (0.097 R)
• M29: 52,939,994 km (0.098 R)
• M30: 67,640,378 km (0.074 R)
• M31: 67,850,114 km (0.044 R)
• M32: 68,481,567 km (0.043 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 528 - 19,545 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit