🌌 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: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.53 AU - 0.63 AU

Year: 281 Days

Day: 28.5 Hours

Environment

Temp: -120 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 71,318,621 km

• M1: 92,451 km (0.072 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.7

Radius: 14.8

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.72 AU - 1 AU

Year: 507 Days

Day: 6.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 71,318,621 km

• M1: 185,053 km (0.034 R)
• M2: 1,019,210 km (0.051 R)
• M3: 2,694,557 km (0.034 R)
• M4: 3,507,920 km (0.116 R)
• M5: 4,438,868 km (0.103 R)
• M6: 5,030,677 km (0.12 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 949.9

Radius: 9.5

Gravity: 10.53 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.87 AU - 0.93 AU

Year: 543 Days

Day: 10.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,318,621 km

• M1: 118,482 km (0.099 R)
• M2: 414,685 km (0.114 R)
• M3: 734,974 km (0.077 R)
• M4: 1,124,976 km (0.079 R)
• M5: 2,031,988 km (0.108 R)
• M6: 2,876,169 km (0.114 R)
• M7: 3,644,055 km (0.07 R)
• M8: 4,113,193 km (0.097 R)
• M9: 4,574,404 km (0.045 R)
• M10: 5,365,926 km (0.102 R)
• M11: 6,012,787 km (0.099 R)
• M12: 7,461,643 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 545.5

Radius: 10.9

Gravity: 4.59 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.21 AU - 1.55 AU

Year: 1031 Days

Day: 10 Hours

Environment

Temp: -172 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 71,318,621 km

• M1: 135,536 km (0.113 R)
• M2: 562,787 km (0.069 R)
• M3: 939,325 km (0.103 R)
• M4: 1,610,421 km (0.099 R)
• M5: 2,123,691 km (0.117 R)
• M6: 2,756,341 km (0.043 R)
• M7: 3,805,919 km (0.095 R)
• M8: 4,902,322 km (0.07 R)
• M9: 5,465,558 km (0.09 R)
• M10: 6,971,410 km (0.108 R)
• M11: 7,465,682 km (0.111 R)
• M12: 8,419,518 km (0.032 R)
• M13: 9,424,666 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.8

Radius: 10.8

Gravity: 6.15 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 1.64 AU - 1.94 AU

Year: 1523 Days

Day: 8 Hours

Environment

Temp: -194 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 71,318,621 km

• M1: 134,339 km (0.058 R)
• M2: 498,011 km (0.112 R)
• M3: 841,787 km (0.117 R)
• M4: 1,281,156 km (0.084 R)
• M5: 1,654,104 km (0.103 R)
• M6: 2,215,096 km (0.078 R)
• M7: 2,639,355 km (0.083 R)
• M8: 3,014,397 km (0.117 R)
• M9: 3,586,908 km (0.089 R)
• M10: 4,493,471 km (0.084 R)
• M11: 4,847,869 km (0.095 R)
• M12: 5,524,350 km (0.092 R)
• M13: 5,978,230 km (0.06 R)
• M14: 7,039,178 km (0.096 R)
• M15: 8,997,564 km (0.115 R)
• M16: 9,372,007 km (0.054 R)
• M17: 10,627,134 km (0.047 R)
• M18: 11,152,222 km (0.096 R)
• M19: 11,621,361 km (0.113 R)
• M20: 12,330,455 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 362.8

Radius: 10.4

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.6 AU - 2.06 AU

Year: 1574 Days

Day: 13.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 71,318,621 km

• M1: 129,402 km (0.097 R)
• M2: 520,152 km (0.097 R)
• M3: 987,346 km (0.101 R)
• M4: 1,357,601 km (0.117 R)
• M5: 2,060,711 km (0.09 R)
• M6: 2,424,682 km (0.085 R)
• M7: 3,100,565 km (0.039 R)
• M8: 3,566,563 km (0.11 R)
• M9: 3,930,086 km (0.053 R)
• M10: 4,639,928 km (0.069 R)
• M11: 5,271,530 km (0.091 R)
• M12: 5,745,007 km (0.064 R)
• M13: 6,405,033 km (0.12 R)
• M14: 7,312,793 km (0.06 R)
• M15: 7,902,657 km (0.095 R)
• M16: 8,579,288 km (0.046 R)
• M17: 9,119,187 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 530.2

Radius: 13.6

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 2.41 AU - 2.97 AU

Year: 2805 Days

Day: 9.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 71,318,621 km

• M1: 170,242 km (0.109 R)
• M2: 601,832 km (0.05 R)
• M3: 1,115,851 km (0.085 R)
• M4: 1,553,873 km (0.111 R)
• M5: 2,072,678 km (0.108 R)
• M6: 2,662,992 km (0.061 R)
• M7: 3,144,996 km (0.115 R)
• M8: 4,732,080 km (0.101 R)
• M9: 5,690,404 km (0.112 R)
• M10: 6,124,088 km (0.117 R)
• M11: 7,203,437 km (0.091 R)
• M12: 8,117,330 km (0.119 R)
• M13: 9,991,941 km (0.051 R)
• M14: 11,405,790 km (0.062 R)
• M15: 12,476,612 km (0.097 R)
• M16: 13,212,334 km (0.112 R)
• M17: 14,628,129 km (0.043 R)
• M18: 15,544,715 km (0.113 R)
• M19: 16,193,521 km (0.115 R)
• M20: 17,016,907 km (0.044 R)
• M21: 18,139,789 km (0.071 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.1

Radius: 8.3

Gravity: 10.39 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 3.04 AU - 4 AU

Year: 4199 Days

Day: 12.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 71,318,621 km

• M1: 103,522 km (0.089 R)
• M2: 650,152 km (0.113 R)
• M3: 1,161,927 km (0.111 R)
• M4: 2,294,233 km (0.118 R)
• M5: 2,870,933 km (0.119 R)
• M6: 4,454,127 km (0.089 R)
• M7: 4,850,113 km (0.113 R)
• M8: 8,058,987 km (0.072 R)
• M9: 8,876,240 km (0.117 R)
• M10: 9,706,957 km (0.114 R)
• M11: 10,588,388 km (0.088 R)
• M12: 13,349,815 km (0.049 R)
• M13: 13,655,144 km (0.107 R)
• M14: 16,383,510 km (0.081 R)
• M15: 18,433,898 km (0.1 R)
• M16: 19,196,698 km (0.049 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 758

Radius: 3.9

Gravity: 49.84 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 8.07 AU - 9.99 AU

Year: 17253 Days

Day: 24.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 71,318,621 km

• M1: 48,470 km (0.066 R)
• M2: 324,328 km (0.075 R)
• M3: 1,244,205 km (0.078 R)
• M4: 1,451,249 km (0.094 R)
• M5: 1,596,359 km (0.112 R)
• M6: 1,841,251 km (0.117 R)
• M7: 3,837,036 km (0.118 R)
• M8: 4,747,937 km (0.052 R)
• M9: 6,717,692 km (0.096 R)
• M10: 6,850,834 km (0.116 R)
• M11: 7,400,906 km (0.109 R)
• M12: 10,361,448 km (0.1 R)
• M13: 10,779,574 km (0.103 R)
• M14: 13,316,754 km (0.078 R)
• M15: 13,527,088 km (0.064 R)
• M16: 17,700,270 km (0.069 R)
• M17: 21,676,432 km (0.096 R)
• M18: 23,056,622 km (0.067 R)
• M19: 23,461,434 km (0.042 R)
• M20: 30,477,873 km (0.117 R)
• M21: 33,481,200 km (0.117 R)
• M22: 41,540,786 km (0.098 R)
• M23: 42,744,749 km (0.108 R)
• M24: 43,355,408 km (0.059 R)
• M25: 50,122,617 km (0.086 R)
• M26: 58,491,870 km (0.106 R)
• M27: 62,514,407 km (0.119 R)
• M28: 62,906,952 km (0.072 R)
• M29: 67,538,951 km (0.114 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 150 - 13,179 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit