🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.18

Radius: 1.37

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.64 AU - 0.7 AU

Year: 360 Days

Day: 32 Hours

Environment

Temp: -133 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,329,206 km

• M1: 33,211 km (0.039 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129

Radius: 13.7

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.84 AU - 1 AU

Year: 579 Days

Day: 12.6 Hours

Environment

Temp: -148 °C

Axial Tilt: 43.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 55,329,206 km

• M1: 170,392 km (0.085 R)
• M2: 639,680 km (0.102 R)
• M3: 1,313,769 km (0.095 R)
• M4: 2,335,372 km (0.119 R)
• M5: 2,958,148 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 812.2

Radius: 8.6

Gravity: 10.98 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.45 AU - 2.15 AU

Year: 1584 Days

Day: 8.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 55,329,206 km

• M1: 106,962 km (0.116 R)
• M2: 420,370 km (0.109 R)
• M3: 723,156 km (0.1 R)
• M4: 1,287,589 km (0.079 R)
• M5: 1,778,868 km (0.031 R)
• M6: 2,204,474 km (0.025 R)
• M7: 3,724,538 km (0.113 R)
• M8: 4,269,972 km (0.104 R)
• M9: 4,764,243 km (0.091 R)
• M10: 6,034,329 km (0.099 R)
• M11: 9,356,449 km (0.063 R)
• M12: 9,717,728 km (0.096 R)
• M13: 10,857,365 km (0.034 R)
• M14: 11,702,742 km (0.082 R)
• M15: 12,238,452 km (0.09 R)
• M16: 12,670,790 km (0.081 R)
• M17: 13,565,984 km (0.102 R)
• M18: 14,200,129 km (0.109 R)
• M19: 14,502,616 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 167.8

Radius: 12.4

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 5.59 AU - 5.73 AU

Year: 8834 Days

Day: 14.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 55,329,206 km

• M1: 154,235 km (0.067 R)
• M2: 659,427 km (0.076 R)
• M3: 1,872,217 km (0.081 R)
• M4: 3,325,561 km (0.026 R)
• M5: 4,623,472 km (0.115 R)
• M6: 5,967,160 km (0.049 R)
• M7: 6,478,934 km (0.11 R)
• M8: 8,979,463 km (0.118 R)
• M9: 12,836,395 km (0.088 R)
• M10: 15,628,041 km (0.035 R)
• M11: 19,121,899 km (0.091 R)
• M12: 20,037,438 km (0.112 R)
• M13: 23,105,690 km (0.104 R)
• M14: 26,554,520 km (0.091 R)

Planet 5 - Ice Giant

Semi-Major Axis: 8.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 112

Radius: 3.3

Gravity: 10.28 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 6.24 AU - 10.24 AU

Year: 15517 Days

Day: 24.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 55,329,206 km

• M1: 41,289 km (0.111 R)
• M2: 190,288 km (0.116 R)
• M3: 576,251 km (0.114 R)
• M4: 950,994 km (0.068 R)
• M5: 1,336,657 km (0.115 R)
• M6: 1,705,565 km (0.093 R)
• M7: 1,891,366 km (0.088 R)
• M8: 2,696,801 km (0.104 R)
• M9: 3,238,495 km (0.093 R)
• M10: 3,970,327 km (0.096 R)
• M11: 5,206,006 km (0.093 R)
• M12: 5,566,238 km (0.1 R)
• M13: 5,847,182 km (0.114 R)
• M14: 6,137,402 km (0.094 R)
• M15: 7,772,806 km (0.118 R)
• M16: 7,966,386 km (0.102 R)
• M17: 8,484,892 km (0.095 R)
• M18: 11,269,956 km (0.115 R)
• M19: 13,192,438 km (0.085 R)
• M20: 13,467,997 km (0.115 R)
• M21: 14,785,057 km (0.102 R)
• M22: 15,202,285 km (0.113 R)
• M23: 18,345,486 km (0.069 R)
• M24: 21,742,405 km (0.103 R)
• M25: 21,895,593 km (0.066 R)
• M26: 26,482,862 km (0.113 R)
• M27: 29,371,597 km (0.118 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 930.6

Radius: 7.5

Gravity: 16.54 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 8.62 AU - 9.2 AU

Year: 17447 Days

Day: 20.9 Hours

Environment

Temp: -233 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 55,329,206 km

• M1: 94,695 km (0.096 R)
• M2: 512,223 km (0.114 R)
• M3: 755,320 km (0.117 R)
• M4: 1,491,192 km (0.117 R)
• M5: 1,928,915 km (0.075 R)
• M6: 3,473,513 km (0.084 R)
• M7: 3,830,005 km (0.072 R)
• M8: 8,173,878 km (0.045 R)
• M9: 8,485,939 km (0.111 R)
• M10: 9,301,098 km (0.083 R)
• M11: 10,960,737 km (0.095 R)
• M12: 16,117,525 km (0.101 R)
• M13: 17,794,218 km (0.1 R)
• M14: 18,142,931 km (0.096 R)
• M15: 18,674,751 km (0.115 R)
• M16: 19,399,702 km (0.111 R)
• M17: 23,308,994 km (0.051 R)
• M18: 33,959,614 km (0.079 R)
• M19: 35,038,963 km (0.103 R)
• M20: 42,618,189 km (0.117 R)
• M21: 55,554,815 km (0.105 R)
• M22: 67,234,369 km (0.082 R)
• M23: 68,293,373 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 798.3

Radius: 6.6

Gravity: 18.33 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 9.09 AU - 11.21 AU

Year: 21213 Days

Day: 21.1 Hours

Environment

Temp: -230 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 55,329,206 km

• M1: 87,066 km (0.096 R)
• M2: 469,588 km (0.046 R)
• M3: 1,203,664 km (0.108 R)
• M4: 1,578,407 km (0.069 R)
• M5: 2,196,246 km (0.042 R)
• M6: 2,808,251 km (0.105 R)
• M7: 3,154,122 km (0.036 R)
• M8: 3,996,058 km (0.07 R)
• M9: 4,792,966 km (0.112 R)
• M10: 5,170,551 km (0.062 R)
• M11: 6,696,749 km (0.091 R)
• M12: 7,120,859 km (0.116 R)
• M13: 9,111,408 km (0.1 R)
• M14: 11,118,114 km (0.103 R)
• M15: 14,304,698 km (0.106 R)
• M16: 18,780,816 km (0.091 R)
• M17: 24,658,815 km (0.115 R)
• M18: 25,555,206 km (0.074 R)
• M19: 27,294,132 km (0.119 R)
• M20: 27,651,072 km (0.085 R)
• M21: 28,863,563 km (0.098 R)
• M22: 33,795,057 km (0.111 R)
• M23: 38,958,577 km (0.104 R)
• M24: 43,482,117 km (0.081 R)
• M25: 48,170,215 km (0.057 R)
• M26: 65,077,318 km (0.108 R)
• M27: 65,289,298 km (0.092 R)
• M28: 69,183,330 km (0.083 R)
• M29: 69,625,392 km (0.119 R)
• M30: 70,515,051 km (0.093 R)
• M31: 71,412,339 km (0.083 R)
• M32: 71,863,676 km (0.103 R)
• M33: 72,317,107 km (0.078 R)
• M34: 74,612,536 km (0.07 R)
• M35: 79,348,207 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 228

Radius: 6.2

Gravity: 5.93 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 9.91 AU - 10.57 AU

Year: 21496 Days

Day: 15.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 55,329,206 km

• M1: 77,193 km (0.087 R)
• M2: 353,350 km (0.089 R)
• M3: 831,465 km (0.101 R)
• M4: 1,452,745 km (0.116 R)
• M5: 2,062,655 km (0.066 R)
• M6: 2,446,075 km (0.079 R)
• M7: 6,860,110 km (0.094 R)
• M8: 10,691,012 km (0.09 R)
• M9: 14,157,494 km (0.097 R)
• M10: 18,545,349 km (0.12 R)
• M11: 22,648,669 km (0.094 R)
• M12: 26,702,622 km (0.102 R)
• M13: 33,769,775 km (0.079 R)
• M14: 36,085,699 km (0.092 R)
• M15: 38,635,595 km (0.07 R)
• M16: 40,355,821 km (0.11 R)
• M17: 40,624,947 km (0.059 R)
• M18: 47,748,648 km (0.051 R)
• M19: 55,163,616 km (0.091 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 345 - 19,401 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit