🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.76

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.42 AU - 0.66 AU

Year: 256 Days

Day: 31.7 Hours

Environment

Temp: -118 °C

Axial Tilt: 39.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 76,006,845 km

• M1: 648,956 km (0.044 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.2

Radius: 8.3

Gravity: 10.92 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.6 AU - 0.76 AU

Year: 362 Days

Day: 14.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 76,006,845 km

• M1: 103,223 km (0.078 R)
• M2: 372,200 km (0.091 R)
• M3: 640,428 km (0.058 R)
• M4: 911,649 km (0.078 R)
• M5: 1,443,320 km (0.1 R)
• M6: 1,721,423 km (0.086 R)
• M7: 2,109,629 km (0.12 R)
• M8: 2,388,031 km (0.066 R)
• M9: 2,700,840 km (0.064 R)
• M10: 3,138,713 km (0.12 R)
• M11: 3,599,175 km (0.107 R)
• M12: 4,051,260 km (0.049 R)
• M13: 5,238,768 km (0.097 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 633

Radius: 11.3

Gravity: 4.96 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.79 AU - 0.85 AU

Year: 479 Days

Day: 13.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 76,006,845 km

• M1: 141,220 km (0.092 R)
• M2: 558,598 km (0.101 R)
• M3: 1,104,481 km (0.117 R)
• M4: 1,554,771 km (0.107 R)
• M5: 2,067,293 km (0.03 R)
• M6: 2,610,184 km (0.116 R)
• M7: 3,773,307 km (0.111 R)
• M8: 4,229,730 km (0.064 R)
• M9: 5,221,714 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.1

Radius: 8.1

Gravity: 4.39 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.78 AU - 1.26 AU

Year: 665 Days

Day: 8.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 76,006,845 km

• M1: 100,829 km (0.067 R)
• M2: 371,152 km (0.035 R)
• M3: 628,760 km (0.082 R)
• M4: 948,899 km (0.058 R)
• M5: 2,439,492 km (0.083 R)
• M6: 4,867,915 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 848.1

Radius: 12.6

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.23 AU - 1.47 AU

Year: 1013 Days

Day: 6.5 Hours

Environment

Temp: -179 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 76,006,845 km

• M1: 156,629 km (0.066 R)
• M2: 590,014 km (0.115 R)
• M3: 997,219 km (0.057 R)
• M4: 2,479,286 km (0.095 R)
• M5: 3,623,709 km (0.107 R)
• M6: 4,053,354 km (0.115 R)
• M7: 4,734,473 km (0.114 R)
• M8: 5,930,209 km (0.051 R)
• M9: 6,484,320 km (0.06 R)
• M10: 7,048,453 km (0.08 R)
• M11: 7,773,853 km (0.078 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.9

Radius: 11.3

Gravity: 5.9 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.72 AU - 1.79 AU

Year: 1495 Days

Day: 11.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 76,006,845 km

• M1: 140,622 km (0.045 R)
• M2: 605,273 km (0.108 R)
• M3: 1,023,249 km (0.082 R)
• M4: 1,500,616 km (0.077 R)
• M5: 1,906,176 km (0.07 R)
• M6: 2,360,954 km (0.061 R)
• M7: 3,045,813 km (0.048 R)
• M8: 3,705,390 km (0.097 R)
• M9: 4,160,018 km (0.083 R)
• M10: 4,631,999 km (0.118 R)
• M11: 5,684,121 km (0.075 R)
• M12: 6,171,062 km (0.116 R)
• M13: 6,812,238 km (0.103 R)
• M14: 7,689,480 km (0.106 R)
• M15: 8,315,098 km (0.101 R)
• M16: 8,670,543 km (0.044 R)
• M17: 9,507,393 km (0.108 R)
• M18: 10,194,945 km (0.105 R)
• M19: 11,056,330 km (0.037 R)
• M20: 13,849,920 km (0.042 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.5

Radius: 11.9

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.76 AU - 2.1 AU

Year: 1731 Days

Day: 10.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 76,006,845 km

• M1: 150,196 km (0.103 R)
• M2: 1,047,933 km (0.029 R)
• M3: 1,522,458 km (0.101 R)
• M4: 4,339,086 km (0.027 R)
• M5: 5,371,162 km (0.116 R)
• M6: 7,295,140 km (0.118 R)
• M7: 7,889,044 km (0.032 R)
• M8: 8,312,256 km (0.048 R)
• M9: 10,357,708 km (0.073 R)
• M10: 12,042,479 km (0.092 R)
• M11: 13,145,015 km (0.1 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 726

Radius: 14.6

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 2.27 AU - 2.51 AU

Year: 2386 Days

Day: 14.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 76,006,845 km

• M1: 181,612 km (0.075 R)
• M2: 645,066 km (0.113 R)
• M3: 1,570,778 km (0.088 R)
• M4: 2,494,694 km (0.108 R)
• M5: 3,048,356 km (0.069 R)
• M6: 4,243,194 km (0.069 R)
• M7: 4,858,939 km (0.09 R)
• M8: 5,413,199 km (0.076 R)
• M9: 6,539,821 km (0.112 R)
• M10: 7,573,691 km (0.091 R)
• M11: 8,483,695 km (0.087 R)
• M12: 10,371,471 km (0.103 R)
• M13: 11,695,562 km (0.108 R)
• M14: 12,568,166 km (0.051 R)
• M15: 13,753,280 km (0.073 R)
• M16: 15,108,039 km (0.085 R)
• M17: 15,942,495 km (0.108 R)
• M18: 16,755,859 km (0.066 R)
• M19: 18,631,517 km (0.09 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 179

Radius: 12.7

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 2.12 AU - 3.3 AU

Year: 2881 Days

Day: 7.5 Hours

Environment

Temp: -210 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 76,006,845 km

• M1: 161,566 km (0.066 R)
• M2: 594,801 km (0.096 R)
• M3: 1,088,325 km (0.036 R)
• M4: 1,627,774 km (0.082 R)
• M5: 3,200,347 km (0.033 R)
• M6: 6,571,535 km (0.082 R)
• M7: 10,242,966 km (0.105 R)
• M8: 11,198,448 km (0.102 R)
• M9: 12,287,221 km (0.053 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 724.5

Radius: 5.2

Gravity: 26.79 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 8.32 AU - 11.02 AU

Year: 19416 Days

Day: 15.4 Hours

Environment

Temp: -236 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 76,006,845 km

• M1: 64,626 km (0.087 R)
• M2: 681,418 km (0.026 R)
• M3: 1,154,297 km (0.072 R)
• M4: 2,177,247 km (0.105 R)
• M5: 3,210,370 km (0.077 R)
• M6: 3,911,386 km (0.068 R)
• M7: 4,639,180 km (0.118 R)
• M8: 5,731,394 km (0.103 R)
• M9: 6,187,218 km (0.099 R)
• M10: 11,824,664 km (0.112 R)
• M11: 12,837,891 km (0.098 R)
• M12: 13,472,934 km (0.117 R)
• M13: 24,367,249 km (0.095 R)
• M14: 26,336,705 km (0.113 R)
• M15: 27,475,594 km (0.047 R)
• M16: 34,734,830 km (0.105 R)
• M17: 35,551,635 km (0.051 R)
• M18: 45,884,509 km (0.093 R)
• M19: 47,198,278 km (0.1 R)
• M20: 48,536,880 km (0.106 R)
• M21: 60,169,311 km (0.102 R)
• M22: 60,756,034 km (0.094 R)
• M23: 65,381,450 km (0.1 R)
• M24: 65,794,340 km (0.097 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: 208 - 19,623 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit