🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.44 AU - 0.6 AU

Year: 242 Days

Day: 43.1 Hours

Environment

Temp: -110 °C

Axial Tilt: 47.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.24

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.53 AU - 0.73 AU

Year: 323 Days

Day: 30.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,012,324 km

• M1: 194,178 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.7

Radius: 14.6

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.58 AU - 0.88 AU

Year: 403 Days

Day: 10.3 Hours

Environment

Temp: -139 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,012,324 km

• M1: 181,612 km (0.041 R)
• M2: 687,701 km (0.109 R)
• M3: 1,313,469 km (0.107 R)
• M4: 1,853,667 km (0.102 R)
• M5: 2,323,704 km (0.118 R)
• M6: 3,005,122 km (0.055 R)
• M7: 3,989,476 km (0.083 R)
• M8: 4,772,770 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 852.7

Radius: 13.9

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.67 AU - 0.97 AU

Year: 479 Days

Day: 12.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,012,324 km

• M1: 173,234 km (0.067 R)
• M2: 1,605,335 km (0.118 R)
• M3: 2,114,416 km (0.091 R)
• M4: 2,981,934 km (0.053 R)
• M5: 3,492,661 km (0.108 R)
• M6: 4,145,955 km (0.104 R)
• M7: 5,320,448 km (0.106 R)
• M8: 5,841,198 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 848.9

Radius: 8.5

Gravity: 11.75 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 3.16 AU - 3.76 AU

Year: 4156 Days

Day: 11.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 56,012,324 km

• M1: 105,766 km (0.106 R)
• M2: 389,553 km (0.119 R)
• M3: 661,671 km (0.05 R)
• M4: 1,122,882 km (0.108 R)
• M5: 1,449,603 km (0.105 R)
• M6: 1,813,276 km (0.076 R)
• M7: 2,118,007 km (0.115 R)
• M8: 2,440,839 km (0.117 R)
• M9: 2,743,625 km (0.11 R)
• M10: 3,014,995 km (0.07 R)
• M11: 4,262,791 km (0.058 R)
• M12: 5,395,846 km (0.098 R)
• M13: 6,368,830 km (0.081 R)
• M14: 6,815,230 km (0.073 R)
• M15: 9,778,166 km (0.082 R)
• M16: 11,081,612 km (0.07 R)
• M17: 11,447,977 km (0.037 R)
• M18: 13,505,546 km (0.064 R)
• M19: 13,923,822 km (0.118 R)
• M20: 14,350,475 km (0.045 R)
• M21: 14,896,208 km (0.039 R)
• M22: 15,512,402 km (0.114 R)
• M23: 17,834,759 km (0.111 R)
• M24: 18,148,316 km (0.089 R)
• M25: 18,722,024 km (0.113 R)
• M26: 19,176,652 km (0.056 R)
• M27: 20,107,899 km (0.032 R)
• M28: 24,519,540 km (0.038 R)
• M29: 26,991,046 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663.2

Radius: 9.6

Gravity: 7.2 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.59 AU - 3.67 AU

Year: 4466 Days

Day: 6.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 56,012,324 km

• M1: 119,828 km (0.086 R)
• M2: 425,307 km (0.115 R)
• M3: 751,281 km (0.12 R)
• M4: 1,147,116 km (0.084 R)
• M5: 1,597,406 km (0.072 R)
• M6: 2,105,141 km (0.091 R)
• M7: 2,666,582 km (0.111 R)
• M8: 3,113,132 km (0.063 R)
• M9: 3,692,973 km (0.114 R)
• M10: 4,133,688 km (0.118 R)
• M11: 6,757,336 km (0.071 R)
• M12: 7,215,704 km (0.112 R)
• M13: 7,694,716 km (0.055 R)
• M14: 8,304,776 km (0.061 R)
• M15: 8,946,701 km (0.077 R)
• M16: 10,117,753 km (0.096 R)
• M17: 10,718,388 km (0.114 R)
• M18: 11,571,246 km (0.085 R)
• M19: 12,276,001 km (0.097 R)
• M20: 14,189,508 km (0.104 R)
• M21: 15,217,395 km (0.09 R)
• M22: 16,005,925 km (0.08 R)
• M23: 17,787,187 km (0.088 R)
• M24: 19,304,259 km (0.081 R)
• M25: 19,630,981 km (0.107 R)
• M26: 20,906,003 km (0.116 R)
• M27: 23,994,152 km (0.077 R)
• M28: 25,372,547 km (0.072 R)
• M29: 25,764,792 km (0.084 R)
• M30: 26,320,549 km (0.076 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.1

Radius: 13

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 4.15 AU - 5.21 AU

Year: 6537 Days

Day: 13.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 56,012,324 km

• M1: 161,715 km (0.049 R)
• M2: 599,289 km (0.089 R)
• M3: 1,569,282 km (0.057 R)
• M4: 2,078,962 km (0.106 R)
• M5: 2,944,984 km (0.109 R)
• M6: 4,389,501 km (0.1 R)
• M7: 6,875,369 km (0.063 R)
• M8: 10,934,557 km (0.08 R)
• M9: 11,373,178 km (0.078 R)
• M10: 12,182,054 km (0.11 R)
• M11: 12,921,067 km (0.113 R)
• M12: 16,242,439 km (0.094 R)
• M13: 17,137,932 km (0.062 R)
• M14: 17,931,549 km (0.11 R)
• M15: 20,828,811 km (0.086 R)
• M16: 23,538,178 km (0.113 R)
• M17: 33,471,327 km (0.085 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 647.8

Radius: 13.6

Gravity: 3.5 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 5.05 AU - 5.65 AU

Year: 7990 Days

Day: 9.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 56,012,324 km

• M1: 169,345 km (0.057 R)
• M2: 972,087 km (0.095 R)
• M3: 1,466,508 km (0.038 R)
• M4: 2,909,080 km (0.1 R)
• M5: 3,582,271 km (0.119 R)
• M6: 4,465,496 km (0.118 R)
• M7: 5,003,151 km (0.072 R)
• M8: 7,254,001 km (0.105 R)
• M9: 8,122,117 km (0.091 R)
• M10: 8,667,102 km (0.044 R)
• M11: 11,095,524 km (0.057 R)
• M12: 12,086,610 km (0.048 R)
• M13: 13,947,458 km (0.112 R)
• M14: 15,226,969 km (0.12 R)
• M15: 16,649,794 km (0.092 R)
• M16: 20,211,121 km (0.082 R)
• M17: 22,494,284 km (0.109 R)
• M18: 23,236,439 km (0.11 R)
• M19: 23,995,050 km (0.089 R)
• M20: 29,091,400 km (0.108 R)
• M21: 29,873,947 km (0.119 R)
• M22: 33,570,211 km (0.104 R)
• M23: 35,417,445 km (0.102 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 971.2

Radius: 3.6

Gravity: 74.94 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 4.72 AU - 7.44 AU

Year: 9680 Days

Day: 16.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 56,012,324 km

• M1: 44,730 km (0.082 R)
• M2: 346,768 km (0.118 R)
• M3: 459,714 km (0.049 R)
• M4: 928,105 km (0.069 R)
• M5: 1,466,209 km (0.096 R)
• M6: 1,988,904 km (0.064 R)
• M7: 2,440,240 km (0.12 R)
• M8: 2,754,994 km (0.108 R)
• M9: 3,620,568 km (0.099 R)
• M10: 5,867,228 km (0.095 R)
• M11: 6,625,839 km (0.102 R)
• M12: 6,865,645 km (0.113 R)
• M13: 7,490,365 km (0.044 R)
• M14: 9,093,905 km (0.102 R)
• M15: 11,190,818 km (0.109 R)
• M16: 11,819,429 km (0.086 R)
• M17: 15,597,523 km (0.049 R)
• M18: 15,808,605 km (0.057 R)
• M19: 18,967,963 km (0.12 R)
• M20: 20,191,075 km (0.118 R)
• M21: 26,598,352 km (0.051 R)
• M22: 27,920,647 km (0.096 R)
• M23: 32,377,318 km (0.056 R)
• M24: 37,915,880 km (0.108 R)
• M25: 46,334,051 km (0.106 R)
• M26: 47,209,198 km (0.098 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 619

Radius: 4.5

Gravity: 30.57 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 6.68 AU - 8.34 AU

Year: 13288 Days

Day: 16.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 56,012,324 km

• M1: 56,249 km (0.03 R)
• M2: 209,437 km (0.08 R)
• M3: 410,197 km (0.036 R)
• M4: 619,934 km (0.103 R)
• M5: 1,016,966 km (0.115 R)
• M6: 1,463,516 km (0.03 R)
• M7: 2,140,895 km (0.111 R)
• M8: 3,324,364 km (0.101 R)
• M9: 4,055,299 km (0.054 R)
• M10: 5,020,205 km (0.114 R)
• M11: 6,400,246 km (0.076 R)
• M12: 6,801,766 km (0.105 R)
• M13: 7,478,697 km (0.05 R)
• M14: 7,743,635 km (0.089 R)
• M15: 7,923,900 km (0.099 R)
• M16: 8,433,879 km (0.114 R)
• M17: 15,211,111 km (0.035 R)
• M18: 16,289,862 km (0.059 R)
• M19: 17,884,276 km (0.115 R)
• M20: 18,438,087 km (0.085 R)
• M21: 18,921,887 km (0.117 R)
• M22: 19,663,144 km (0.099 R)
• M23: 21,291,667 km (0.098 R)
• M24: 24,042,323 km (0.092 R)
• M25: 24,619,471 km (0.081 R)
• M26: 27,124,039 km (0.115 R)
• M27: 38,318,747 km (0.084 R)
• M28: 38,842,339 km (0.069 R)
• M29: 39,903,736 km (0.069 R)
• M30: 42,223,101 km (0.061 R)
• M31: 43,344,936 km (0.077 R)
• M32: 43,628,573 km (0.104 R)
• M33: 44,630,730 km (0.055 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 455 - 15,076 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit