🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.23

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.61 AU - 0.65 AU

Year: 318 Days

Day: 38.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 24.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 94.3

Radius: 14.7

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.6 AU - 0.82 AU

Year: 380 Days

Day: 7.4 Hours

Environment

Temp: -148 °C

Axial Tilt: 45.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 87,686,669 km

• M1: 182,809 km (0.104 R)
• M2: 745,147 km (0.106 R)
• M3: 1,238,820 km (0.09 R)
• M4: 2,541,369 km (0.068 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.9

Radius: 11.8

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.81 AU - 0.99 AU

Year: 543 Days

Day: 11.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 87,686,669 km

• M1: 146,756 km (0.056 R)
• M2: 544,686 km (0.107 R)
• M3: 944,711 km (0.088 R)
• M4: 1,650,065 km (0.047 R)
• M5: 2,556,029 km (0.064 R)
• M6: 3,116,124 km (0.038 R)
• M7: 3,713,917 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 361.5

Radius: 9.2

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 3.24 AU - 4.94 AU

Year: 5259 Days

Day: 9.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 87,686,669 km

• M1: 114,442 km (0.116 R)
• M2: 457,321 km (0.12 R)
• M3: 870,061 km (0.078 R)
• M4: 1,336,059 km (0.091 R)
• M5: 1,962,425 km (0.029 R)
• M6: 2,328,341 km (0.081 R)
• M7: 2,624,246 km (0.079 R)
• M8: 4,526,532 km (0.094 R)
• M9: 4,865,671 km (0.093 R)
• M10: 5,541,105 km (0.102 R)
• M11: 6,015,480 km (0.09 R)
• M12: 6,336,816 km (0.119 R)
• M13: 11,362,108 km (0.12 R)
• M14: 12,082,721 km (0.116 R)
• M15: 12,595,542 km (0.083 R)
• M16: 15,983,037 km (0.1 R)
• M17: 17,235,320 km (0.095 R)
• M18: 18,613,117 km (0.046 R)
• M19: 23,905,441 km (0.095 R)
• M20: 24,270,609 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 661.1

Radius: 13.1

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 3.91 AU - 5.13 AU

Year: 6110 Days

Day: 7.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 87,686,669 km

• M1: 169,943 km (0.104 R)
• M2: 773,421 km (0.075 R)
• M3: 2,485,419 km (0.049 R)
• M4: 2,937,803 km (0.112 R)
• M5: 4,380,674 km (0.098 R)
• M6: 4,799,399 km (0.056 R)
• M7: 6,060,509 km (0.062 R)
• M8: 7,134,472 km (0.107 R)
• M9: 8,174,925 km (0.115 R)
• M10: 8,895,538 km (0.071 R)
• M11: 9,528,038 km (0.078 R)
• M12: 11,265,617 km (0.114 R)
• M13: 13,586,329 km (0.044 R)
• M14: 15,359,961 km (0.1 R)
• M15: 15,780,930 km (0.102 R)
• M16: 19,016,283 km (0.092 R)
• M17: 22,592,869 km (0.098 R)
• M18: 24,093,036 km (0.109 R)
• M19: 26,423,322 km (0.086 R)
• M20: 28,537,290 km (0.067 R)
• M21: 29,542,887 km (0.045 R)
• M22: 30,856,805 km (0.078 R)
• M23: 31,916,257 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 930.4

Radius: 11.8

Gravity: 6.68 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 4.1 AU - 5.42 AU

Year: 6603 Days

Day: 6.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 87,686,669 km

• M1: 146,756 km (0.101 R)
• M2: 550,969 km (0.084 R)
• M3: 971,788 km (0.093 R)
• M4: 1,448,706 km (0.092 R)
• M5: 2,489,309 km (0.089 R)
• M6: 3,013,200 km (0.105 R)
• M7: 3,657,070 km (0.073 R)
• M8: 4,417,775 km (0.044 R)
• M9: 5,159,930 km (0.104 R)
• M10: 7,810,954 km (0.101 R)
• M11: 10,175,049 km (0.047 R)
• M12: 10,610,977 km (0.105 R)
• M13: 12,646,256 km (0.09 R)
• M14: 18,101,791 km (0.072 R)
• M15: 18,599,204 km (0.103 R)
• M16: 19,995,401 km (0.054 R)
• M17: 20,374,183 km (0.035 R)
• M18: 20,990,227 km (0.091 R)
• M19: 22,340,647 km (0.112 R)
• M20: 22,913,158 km (0.113 R)
• M21: 27,384,339 km (0.102 R)
• M22: 28,899,017 km (0.037 R)
• M23: 30,668,910 km (0.103 R)
• M24: 32,405,741 km (0.101 R)
• M25: 33,564,077 km (0.099 R)
• M26: 36,976,704 km (0.074 R)
• M27: 37,433,277 km (0.07 R)
• M28: 38,241,404 km (0.045 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 769.6

Radius: 3.7

Gravity: 56.22 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 6.98 AU - 10.32 AU

Year: 16175 Days

Day: 15.1 Hours

Environment

Temp: -237 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 87,686,669 km

• M1: 85,271 km (0.109 R)
• M2: 466,596 km (0.116 R)
• M3: 817,253 km (0.069 R)
• M4: 1,197,232 km (0.096 R)
• M5: 1,396,646 km (0.075 R)
• M6: 1,702,274 km (0.095 R)
• M7: 1,880,296 km (0.082 R)
• M8: 3,064,363 km (0.097 R)
• M9: 3,247,471 km (0.055 R)
• M10: 3,521,683 km (0.09 R)
• M11: 4,706,349 km (0.054 R)
• M12: 6,011,590 km (0.078 R)
• M13: 6,133,513 km (0.111 R)
• M14: 17,865,726 km (0.103 R)
• M15: 20,134,377 km (0.11 R)
• M16: 21,621,679 km (0.066 R)
• M17: 22,489,796 km (0.063 R)
• M18: 23,784,416 km (0.117 R)
• M19: 24,295,143 km (0.079 R)
• M20: 28,419,107 km (0.034 R)
• M21: 29,577,145 km (0.11 R)
• M22: 38,998,071 km (0.077 R)
• M23: 39,139,291 km (0.09 R)
• M24: 39,565,196 km (0.041 R)
• M25: 40,426,431 km (0.074 R)
• M26: 41,594,042 km (0.04 R)
• M27: 42,335,001 km (0.117 R)
• M28: 47,287,139 km (0.081 R)
• M29: 55,417,783 km (0.072 R)
• M30: 65,822,315 km (0.04 R)
• M31: 68,048,481 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 896.1

Radius: 4.7

Gravity: 40.57 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 8.22 AU - 12.78 AU

Year: 21633 Days

Day: 18.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 87,686,669 km

• M1: 58,493 km (0.086 R)
• M2: 242,199 km (0.052 R)
• M3: 391,049 km (0.081 R)
• M4: 893,398 km (0.081 R)
• M5: 1,110,764 km (0.101 R)
• M6: 1,689,110 km (0.119 R)
• M7: 1,880,894 km (0.095 R)
• M8: 2,308,146 km (0.119 R)
• M9: 2,544,660 km (0.062 R)
• M10: 4,146,853 km (0.047 R)
• M11: 4,497,062 km (0.093 R)
• M12: 5,098,146 km (0.03 R)
• M13: 5,256,420 km (0.105 R)
• M14: 5,836,561 km (0.101 R)
• M15: 6,832,883 km (0.101 R)
• M16: 12,594,196 km (0.11 R)
• M17: 18,703,623 km (0.085 R)
• M18: 26,769,342 km (0.081 R)
• M19: 28,347,301 km (0.101 R)
• M20: 30,633,156 km (0.114 R)
• M21: 31,687,372 km (0.095 R)
• M22: 33,728,785 km (0.106 R)
• M23: 35,137,398 km (0.068 R)
• M24: 35,423,729 km (0.062 R)
• M25: 41,006,123 km (0.075 R)
• M26: 43,426,915 km (0.081 R)
• M27: 48,728,215 km (0.119 R)
• M28: 49,801,730 km (0.097 R)
• M29: 54,636,434 km (0.057 R)
• M30: 59,368,364 km (0.107 R)
• M31: 60,798,370 km (0.031 R)
• M32: 67,186,947 km (0.1 R)
• M33: 71,456,171 km (0.065 R)
• M34: 74,715,161 km (0.104 R)
• M35: 81,277,421 km (0.106 R)
• M36: 81,778,274 km (0.113 R)
• M37: 86,378,858 km (0.074 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 402 - 12,943 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit