🌌 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: 2.2

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.51 AU - 0.69 AU

Year: 300 Days

Day: 22.7 Hours

Environment

Temp: -138 °C

Axial Tilt: 25.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 170.1

Radius: 12.1

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.86 AU - 0.96 AU

Year: 561 Days

Day: 11.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 40,171,692 km

• M1: 150,495 km (0.099 R)
• M2: 557,252 km (0.063 R)
• M3: 1,098,946 km (0.111 R)
• M4: 1,701,825 km (0.073 R)
• M5: 3,025,318 km (0.118 R)
• M6: 3,437,011 km (0.07 R)
• M7: 4,412,539 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 246.7

Radius: 13.6

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 1.35 AU - 2.03 AU

Year: 1419 Days

Day: 8.3 Hours

Environment

Temp: -182 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,171,692 km

• M1: 169,195 km (0.073 R)
• M2: 641,775 km (0.108 R)
• M3: 1,114,654 km (0.05 R)
• M4: 1,627,176 km (0.106 R)
• M5: 2,511,898 km (0.044 R)
• M6: 3,173,868 km (0.095 R)
• M7: 3,755,655 km (0.103 R)
• M8: 4,375,439 km (0.11 R)
• M9: 5,509,091 km (0.108 R)
• M10: 6,042,707 km (0.114 R)
• M11: 8,150,990 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 74.5

Radius: 11.2

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 2.38 AU - 3.66 AU

Year: 3389 Days

Day: 5.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,171,692 km

• M1: 139,575 km (0.058 R)
• M2: 1,463,217 km (0.083 R)
• M3: 1,936,544 km (0.109 R)
• M4: 2,571,139 km (0.105 R)
• M5: 3,141,256 km (0.115 R)
• M6: 3,762,536 km (0.105 R)
• M7: 5,512,682 km (0.045 R)
• M8: 7,222,136 km (0.11 R)
• M9: 10,506,707 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 247.4

Radius: 8.7

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 3.06 AU - 4.8 AU

Year: 5030 Days

Day: 13.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,171,692 km

• M1: 108,159 km (0.085 R)
• M2: 447,896 km (0.052 R)
• M3: 825,481 km (0.091 R)
• M4: 1,343,688 km (0.054 R)
• M5: 1,888,673 km (0.089 R)
• M6: 4,192,331 km (0.094 R)
• M7: 4,702,160 km (0.091 R)
• M8: 5,327,928 km (0.116 R)
• M9: 8,227,284 km (0.092 R)
• M10: 8,673,086 km (0.091 R)
• M11: 10,263,760 km (0.03 R)
• M12: 12,083,618 km (0.059 R)
• M13: 15,201,836 km (0.082 R)
• M14: 19,055,478 km (0.119 R)
• M15: 21,334,152 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 838.3

Radius: 8.9

Gravity: 10.58 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 4.38 AU - 6.02 AU

Year: 7656 Days

Day: 5 Hours

Environment

Temp: -214 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 40,171,692 km

• M1: 111,600 km (0.094 R)
• M2: 617,989 km (0.116 R)
• M3: 971,937 km (0.105 R)
• M4: 1,313,021 km (0.049 R)
• M5: 1,676,843 km (0.105 R)
• M6: 2,296,178 km (0.118 R)
• M7: 3,682,352 km (0.112 R)
• M8: 5,524,949 km (0.081 R)
• M9: 6,163,283 km (0.074 R)
• M10: 7,000,732 km (0.074 R)
• M11: 7,427,235 km (0.082 R)
• M12: 7,912,231 km (0.097 R)
• M13: 8,289,667 km (0.084 R)
• M14: 9,541,203 km (0.094 R)
• M15: 11,382,752 km (0.078 R)
• M16: 12,925,256 km (0.112 R)
• M17: 14,478,232 km (0.11 R)
• M18: 20,342,767 km (0.061 R)
• M19: 20,893,138 km (0.072 R)
• M20: 21,534,165 km (0.109 R)
• M21: 22,855,563 km (0.106 R)
• M22: 25,027,275 km (0.086 R)
• M23: 28,880,767 km (0.105 R)
• M24: 32,468,871 km (0.116 R)
• M25: 34,870,216 km (0.065 R)
• M26: 36,804,966 km (0.037 R)
• M27: 41,638,024 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 438.1

Radius: 5.1

Gravity: 16.84 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 6.57 AU - 7.49 AU

Year: 12035 Days

Day: 18.4 Hours

Environment

Temp: -229 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 40,171,692 km

• M1: 63,878 km (0.12 R)
• M2: 240,553 km (0.093 R)
• M3: 414,835 km (0.095 R)
• M4: 602,131 km (0.057 R)
• M5: 828,024 km (0.109 R)
• M6: 1,189,752 km (0.086 R)
• M7: 1,564,046 km (0.119 R)
• M8: 2,064,151 km (0.09 R)
• M9: 2,563,808 km (0.104 R)
• M10: 2,747,066 km (0.114 R)
• M11: 3,049,852 km (0.095 R)
• M12: 3,520,636 km (0.101 R)
• M13: 4,038,395 km (0.084 R)
• M14: 4,231,077 km (0.113 R)
• M15: 4,401,169 km (0.039 R)
• M16: 5,419,931 km (0.036 R)
• M17: 6,326,344 km (0.071 R)
• M18: 7,129,087 km (0.085 R)
• M19: 7,826,961 km (0.093 R)
• M20: 10,759,528 km (0.094 R)
• M21: 11,510,509 km (0.119 R)
• M22: 11,842,766 km (0.087 R)
• M23: 12,643,114 km (0.112 R)
• M24: 18,365,682 km (0.084 R)
• M25: 20,954,174 km (0.109 R)
• M26: 21,532,968 km (0.09 R)
• M27: 21,868,366 km (0.092 R)
• M28: 22,122,234 km (0.102 R)
• M29: 23,598,167 km (0.114 R)
• M30: 26,841,149 km (0.118 R)
• M31: 28,922,953 km (0.081 R)
• M32: 29,536,903 km (0.094 R)
• M33: 31,003,411 km (0.085 R)
• M34: 35,111,219 km (0.11 R)
• M35: 36,517,738 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 129.2

Radius: 4.7

Gravity: 5.85 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 8.61 AU - 9.55 AU

Year: 17666 Days

Day: 19.8 Hours

Environment

Temp: -234 °C

Axial Tilt: 105 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 40,171,692 km

• M1: 58,942 km (0.043 R)
• M2: 229,034 km (0.101 R)
• M3: 394,041 km (0.09 R)
• M4: 883,675 km (0.105 R)
• M5: 1,109,268 km (0.092 R)
• M6: 1,397,693 km (0.096 R)
• M7: 1,677,142 km (0.107 R)
• M8: 2,106,787 km (0.079 R)
• M9: 2,823,061 km (0.057 R)
• M10: 3,406,044 km (0.117 R)
• M11: 5,348,273 km (0.066 R)
• M12: 5,601,692 km (0.114 R)
• M13: 5,962,971 km (0.036 R)
• M14: 8,853,501 km (0.083 R)
• M15: 9,298,405 km (0.089 R)
• M16: 13,064,831 km (0.067 R)
• M17: 13,641,082 km (0.034 R)
• M18: 15,727,374 km (0.033 R)
• M19: 16,313,349 km (0.093 R)
• M20: 17,597,796 km (0.094 R)
• M21: 20,289,959 km (0.116 R)
• M22: 22,014,224 km (0.096 R)
• M23: 24,089,446 km (0.059 R)
• M24: 27,675,008 km (0.107 R)
• M25: 30,586,631 km (0.079 R)
• M26: 34,450,594 km (0.088 R)
• M27: 38,393,546 km (0.053 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: 277 - 13,907 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit