🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.81

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.56 AU - 0.6 AU

Year: 285 Days

Day: 18.1 Hours

Environment

Temp: -129 °C

Axial Tilt: 31.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 446.2

Radius: 13.2

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.53 AU - 0.85 AU

Year: 370 Days

Day: 7.7 Hours

Environment

Temp: -128 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 63,681,331 km

• M1: 164,109 km (0.097 R)
• M2: 586,124 km (0.113 R)
• M3: 1,144,723 km (0.103 R)
• M4: 1,638,845 km (0.057 R)
• M5: 3,074,386 km (0.108 R)
• M6: 3,573,295 km (0.079 R)
• M7: 4,250,823 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 556.2

Radius: 9.2

Gravity: 6.57 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.99 AU - 0.99 AU

Year: 636 Days

Day: 13.7 Hours

Environment

Temp: -163 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 63,681,331 km

• M1: 114,442 km (0.1 R)
• M2: 590,612 km (0.031 R)
• M3: 939,175 km (0.096 R)
• M4: 1,325,886 km (0.092 R)
• M5: 1,834,219 km (0.056 R)
• M6: 2,677,054 km (0.103 R)
• M7: 3,083,960 km (0.091 R)
• M8: 3,518,692 km (0.103 R)
• M9: 4,480,905 km (0.104 R)
• M10: 4,892,000 km (0.068 R)
• M11: 5,225,154 km (0.12 R)
• M12: 5,555,766 km (0.11 R)
• M13: 6,572,433 km (0.095 R)
• M14: 6,999,684 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389.5

Radius: 12.2

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.22 AU - 1.36 AU

Year: 946 Days

Day: 10.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 63,681,331 km

• M1: 151,692 km (0.115 R)
• M2: 631,752 km (0.093 R)
• M3: 1,046,736 km (0.092 R)
• M4: 1,588,281 km (0.104 R)
• M5: 2,137,006 km (0.113 R)
• M6: 2,845,202 km (0.092 R)
• M7: 3,261,383 km (0.081 R)
• M8: 3,904,355 km (0.1 R)
• M9: 4,880,182 km (0.077 R)
• M10: 5,629,368 km (0.085 R)
• M11: 6,331,131 km (0.104 R)
• M12: 7,334,185 km (0.093 R)
• M13: 7,933,175 km (0.095 R)

Asteroid Belt

Center: 2.46 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.4

Radius: 11.3

Gravity: 6.76 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 3.02 AU - 4.24 AU

Year: 4466 Days

Day: 6.2 Hours

Environment

Temp: -201 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 63,681,331 km

• M1: 143,464 km (0.111 R)
• M2: 610,958 km (0.101 R)
• M3: 1,011,730 km (0.106 R)
• M4: 1,858,754 km (0.072 R)
• M5: 2,501,127 km (0.09 R)
• M6: 3,052,245 km (0.108 R)
• M7: 3,639,716 km (0.115 R)
• M8: 5,095,453 km (0.1 R)
• M9: 5,513,729 km (0.114 R)
• M10: 5,984,962 km (0.106 R)
• M11: 6,482,973 km (0.088 R)
• M12: 7,144,196 km (0.039 R)
• M13: 9,691,698 km (0.093 R)
• M14: 10,204,819 km (0.047 R)
• M15: 10,646,132 km (0.098 R)
• M16: 11,008,309 km (0.119 R)
• M17: 11,378,863 km (0.113 R)
• M18: 11,853,537 km (0.107 R)
• M19: 14,047,689 km (0.081 R)
• M20: 15,672,471 km (0.099 R)
• M21: 18,696,742 km (0.103 R)
• M22: 19,763,225 km (0.119 R)
• M23: 20,173,422 km (0.103 R)
• M24: 21,295,257 km (0.034 R)
• M25: 22,384,180 km (0.071 R)
• M26: 23,970,665 km (0.094 R)
• M27: 26,037,210 km (0.073 R)
• M28: 27,282,014 km (0.109 R)
• M29: 29,890,103 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 465.2

Radius: 12.9

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 4.09 AU - 5.42 AU

Year: 6684 Days

Day: 6.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 63,681,331 km

• M1: 160,967 km (0.083 R)
• M2: 826,977 km (0.049 R)
• M3: 1,594,265 km (0.06 R)
• M4: 2,135,659 km (0.052 R)
• M5: 2,586,098 km (0.027 R)
• M6: 3,022,924 km (0.103 R)
• M7: 4,142,664 km (0.038 R)
• M8: 8,760,451 km (0.116 R)
• M9: 9,756,624 km (0.11 R)
• M10: 11,295,238 km (0.088 R)
• M11: 12,222,744 km (0.111 R)
• M12: 13,681,174 km (0.088 R)
• M13: 14,508,749 km (0.059 R)
• M14: 15,078,867 km (0.098 R)
• M15: 15,842,265 km (0.066 R)
• M16: 17,574,010 km (0.075 R)
• M17: 18,091,170 km (0.115 R)
• M18: 19,981,937 km (0.12 R)
• M19: 21,047,373 km (0.079 R)
• M20: 23,368,983 km (0.096 R)
• M21: 23,915,912 km (0.075 R)
• M22: 29,410,941 km (0.062 R)
• M23: 30,695,837 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 202.8

Radius: 4.6

Gravity: 9.58 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 6.37 AU - 9.57 AU

Year: 14528 Days

Day: 19.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 63,681,331 km

• M1: 58,044 km (0.106 R)
• M2: 280,346 km (0.057 R)
• M3: 487,091 km (0.07 R)
• M4: 1,288,187 km (0.094 R)
• M5: 1,488,050 km (0.062 R)
• M6: 2,163,784 km (0.074 R)
• M7: 3,024,570 km (0.095 R)
• M8: 6,754,793 km (0.077 R)
• M9: 7,556,188 km (0.057 R)
• M10: 8,720,658 km (0.057 R)
• M11: 9,164,216 km (0.104 R)
• M12: 10,144,082 km (0.036 R)
• M13: 11,295,387 km (0.112 R)
• M14: 14,703,526 km (0.076 R)
• M15: 22,047,285 km (0.079 R)
• M16: 27,565,652 km (0.117 R)
• M17: 32,026,511 km (0.115 R)
• M18: 34,481,860 km (0.077 R)
• M19: 38,102,727 km (0.048 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 669

Radius: 5.6

Gravity: 21.33 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 8.21 AU - 8.43 AU

Year: 15495 Days

Day: 16.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 63,681,331 km

• M1: 69,713 km (0.111 R)
• M2: 288,724 km (0.098 R)
• M3: 472,430 km (0.103 R)
• M4: 813,663 km (0.107 R)
• M5: 1,051,673 km (0.103 R)
• M6: 1,226,852 km (0.092 R)
• M7: 1,856,809 km (0.103 R)
• M8: 3,930,834 km (0.12 R)
• M9: 4,295,404 km (0.078 R)
• M10: 5,488,297 km (0.093 R)
• M11: 6,022,212 km (0.086 R)
• M12: 6,758,682 km (0.059 R)
• M13: 8,165,052 km (0.106 R)
• M14: 8,911,096 km (0.056 R)
• M15: 9,756,025 km (0.113 R)
• M16: 9,975,336 km (0.089 R)
• M17: 11,788,163 km (0.119 R)
• M18: 13,878,643 km (0.065 R)
• M19: 15,599,767 km (0.113 R)
• M20: 17,458,520 km (0.103 R)
• M21: 19,459,841 km (0.12 R)
• M22: 20,785,427 km (0.116 R)
• M23: 23,419,098 km (0.113 R)
• M24: 25,638,233 km (0.107 R)
• M25: 27,555,030 km (0.105 R)
• M26: 29,223,794 km (0.114 R)
• M27: 36,705,483 km (0.117 R)
• M28: 40,671,472 km (0.074 R)
• M29: 43,271,633 km (0.062 R)
• M30: 44,311,936 km (0.114 R)
• M31: 50,578,741 km (0.085 R)
• M32: 52,400,245 km (0.112 R)
• M33: 53,073,285 km (0.093 R)
• M34: 56,525,256 km (0.068 R)
• M35: 57,411,025 km (0.09 R)
• M36: 60,491,993 km (0.048 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: 425 - 12,554 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit