🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.39 AU - 0.63 AU

Year: 239 Days

Day: 14.8 Hours

Environment

Temp: -114 °C

Axial Tilt: 17.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 367.8

Radius: 10.9

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.62 AU - 0.89 AU

Year: 426 Days

Day: 14.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 29,105,481 km

• M1: 135,685 km (0.098 R)
• M2: 500,106 km (0.105 R)
• M3: 846,574 km (0.09 R)
• M4: 1,188,705 km (0.085 R)
• M5: 1,600,248 km (0.11 R)
• M6: 2,276,431 km (0.06 R)
• M7: 3,134,225 km (0.116 R)
• M8: 3,479,048 km (0.055 R)
• M9: 4,602,079 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590

Radius: 13.3

Gravity: 3.34 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.15 AU - 1.29 AU

Year: 884 Days

Day: 5.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 29,105,481 km

• M1: 165,754 km (0.074 R)
• M2: 633,996 km (0.086 R)
• M3: 1,197,980 km (0.117 R)
• M4: 1,725,761 km (0.102 R)
• M5: 2,293,186 km (0.118 R)
• M6: 3,096,826 km (0.1 R)
• M7: 4,004,286 km (0.079 R)
• M8: 4,479,708 km (0.065 R)
• M9: 4,904,566 km (0.047 R)
• M10: 5,506,997 km (0.113 R)
• M11: 6,158,346 km (0.06 R)
• M12: 6,750,903 km (0.088 R)
• M13: 7,197,154 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336

Radius: 8.8

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.29 AU - 1.65 AU

Year: 1169 Days

Day: 8.4 Hours

Environment

Temp: -184 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,105,481 km

• M1: 109,506 km (0.05 R)
• M2: 388,506 km (0.08 R)
• M3: 1,048,382 km (0.056 R)
• M4: 1,401,582 km (0.109 R)
• M5: 1,961,976 km (0.102 R)
• M6: 2,374,268 km (0.112 R)
• M7: 3,400,808 km (0.088 R)
• M8: 4,029,119 km (0.072 R)
• M9: 4,907,708 km (0.059 R)
• M10: 5,233,532 km (0.113 R)
• M11: 5,928,713 km (0.082 R)
• M12: 6,425,528 km (0.114 R)
• M13: 6,793,987 km (0.114 R)
• M14: 7,620,964 km (0.12 R)
• M15: 8,852,454 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 300.6

Radius: 8

Gravity: 4.7 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 1.24 AU - 1.72 AU

Year: 1181 Days

Day: 11.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,105,481 km

• M1: 99,483 km (0.109 R)
• M2: 360,232 km (0.08 R)
• M3: 617,690 km (0.097 R)
• M4: 943,364 km (0.118 R)
• M5: 1,368,372 km (0.077 R)
• M6: 2,086,591 km (0.084 R)
• M7: 2,393,416 km (0.101 R)
• M8: 2,671,968 km (0.06 R)
• M9: 3,111,486 km (0.112 R)
• M10: 3,499,693 km (0.119 R)
• M11: 3,995,909 km (0.094 R)
• M12: 4,293,160 km (0.08 R)
• M13: 4,689,594 km (0.096 R)
• M14: 5,671,554 km (0.087 R)
• M15: 6,007,252 km (0.119 R)
• M16: 6,784,263 km (0.09 R)
• M17: 7,208,523 km (0.114 R)
• M18: 8,134,683 km (0.112 R)
• M19: 8,639,277 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 927.4

Radius: 10.8

Gravity: 7.95 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 2.22 AU - 2.8 AU

Year: 2609 Days

Day: 13.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 29,105,481 km

• M1: 187,297 km (0.11 R)
• M2: 715,227 km (0.108 R)
• M3: 1,460,225 km (0.114 R)
• M4: 2,174,255 km (0.033 R)
• M5: 2,543,463 km (0.12 R)
• M6: 3,073,039 km (0.072 R)
• M7: 3,522,132 km (0.108 R)
• M8: 4,946,005 km (0.088 R)
• M9: 5,412,152 km (0.11 R)
• M10: 6,576,173 km (0.052 R)
• M11: 7,294,691 km (0.084 R)
• M12: 8,642,269 km (0.107 R)
• M13: 12,931,838 km (0.051 R)
• M14: 14,996,887 km (0.094 R)
• M15: 16,833,052 km (0.103 R)
• M16: 17,720,466 km (0.103 R)
• M17: 19,953,065 km (0.037 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.9

Radius: 12.7

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 3.17 AU - 3.37 AU

Year: 3879 Days

Day: 7.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,105,481 km

• M1: 157,975 km (0.084 R)
• M2: 582,235 km (0.085 R)
• M3: 1,058,405 km (0.045 R)
• M4: 1,502,112 km (0.07 R)
• M5: 2,071,781 km (0.072 R)
• M6: 3,224,881 km (0.11 R)
• M7: 3,652,133 km (0.041 R)
• M8: 4,273,712 km (0.09 R)
• M9: 4,816,154 km (0.036 R)
• M10: 5,757,424 km (0.081 R)
• M11: 6,974,702 km (0.085 R)
• M12: 9,714,437 km (0.066 R)
• M13: 10,321,655 km (0.058 R)
• M14: 11,083,557 km (0.078 R)
• M15: 12,019,591 km (0.102 R)
• M16: 14,985,069 km (0.086 R)
• M17: 16,466,686 km (0.055 R)
• M18: 19,465,077 km (0.068 R)
• M19: 24,396,720 km (0.098 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 659.8

Radius: 9.9

Gravity: 6.73 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 3.23 AU - 5.38 AU

Year: 5849 Days

Day: 8.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 29,105,481 km

• M1: 125,213 km (0.074 R)
• M2: 567,874 km (0.108 R)
• M3: 1,442,572 km (0.03 R)
• M4: 1,834,967 km (0.099 R)
• M5: 2,379,953 km (0.093 R)
• M6: 2,971,463 km (0.081 R)
• M7: 3,354,882 km (0.082 R)
• M8: 3,886,253 km (0.086 R)
• M9: 5,317,307 km (0.095 R)
• M10: 5,731,842 km (0.026 R)
• M11: 6,104,192 km (0.051 R)
• M12: 6,592,479 km (0.111 R)
• M13: 7,573,542 km (0.097 R)
• M14: 8,410,542 km (0.095 R)
• M15: 9,563,493 km (0.074 R)
• M16: 10,495,039 km (0.12 R)
• M17: 10,912,267 km (0.119 R)
• M18: 11,730,717 km (0.105 R)
• M19: 13,983,511 km (0.095 R)
• M20: 18,310,630 km (0.073 R)
• M21: 20,238,049 km (0.075 R)
• M22: 21,398,180 km (0.108 R)
• M23: 22,449,255 km (0.095 R)
• M24: 26,145,519 km (0.116 R)
• M25: 27,960,291 km (0.11 R)
• M26: 30,885,079 km (0.084 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260.9

Radius: 12.4

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 4.17 AU - 6.13 AU

Year: 7667 Days

Day: 9.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,105,481 km

• M1: 166,353 km (0.088 R)
• M2: 736,770 km (0.07 R)
• M3: 1,406,220 km (0.119 R)
• M4: 3,773,157 km (0.075 R)
• M5: 5,375,949 km (0.108 R)
• M6: 6,191,407 km (0.042 R)
• M7: 6,954,506 km (0.104 R)
• M8: 7,850,896 km (0.116 R)
• M9: 9,418,981 km (0.048 R)
• M10: 12,663,460 km (0.117 R)
• M11: 16,000,539 km (0.112 R)
• M12: 17,191,488 km (0.109 R)
• M13: 17,808,729 km (0.114 R)
• M14: 18,956,893 km (0.098 R)
• M15: 20,840,330 km (0.118 R)
• M16: 23,667,430 km (0.113 R)
• M17: 25,054,801 km (0.109 R)
• M18: 26,332,816 km (0.083 R)
• M19: 28,330,845 km (0.084 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 245 - 18,062 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit