🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.79

Radius: 1.26

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.44 AU - 0.66 AU

Year: 263 Days

Day: 14.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 33.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 943.8

Radius: 10.9

Gravity: 7.94 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.59 AU - 0.93 AU

Year: 428 Days

Day: 9 Hours

Environment

Temp: -150 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 63,954,750 km

• M1: 135,536 km (0.072 R)
• M2: 529,277 km (0.117 R)
• M3: 868,864 km (0.098 R)
• M4: 1,369,120 km (0.111 R)
• M5: 1,914,404 km (0.12 R)
• M6: 2,630,978 km (0.064 R)
• M7: 3,109,392 km (0.05 R)
• M8: 3,468,127 km (0.114 R)
• M9: 3,962,848 km (0.097 R)
• M10: 4,823,933 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 88.3

Radius: 10

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.94 AU - 1.96 AU

Year: 1758 Days

Day: 9.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 63,954,750 km

• M1: 130,599 km (0.102 R)
• M2: 710,440 km (0.091 R)
• M3: 1,047,484 km (0.069 R)
• M4: 1,598,004 km (0.114 R)
• M5: 1,949,260 km (0.077 R)
• M6: 2,464,326 km (0.052 R)
• M7: 3,781,834 km (0.11 R)
• M8: 4,398,327 km (0.096 R)
• M9: 4,796,407 km (0.1 R)
• M10: 5,646,572 km (0.04 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.1

Radius: 13.9

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 3.34 AU - 4.44 AU

Year: 4954 Days

Day: 12.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 63,954,750 km

• M1: 182,061 km (0.061 R)
• M2: 732,730 km (0.088 R)
• M3: 1,377,198 km (0.105 R)
• M4: 1,934,899 km (0.096 R)
• M5: 3,681,304 km (0.111 R)
• M6: 4,158,073 km (0.12 R)
• M7: 6,343,698 km (0.109 R)
• M8: 7,363,207 km (0.115 R)
• M9: 7,912,531 km (0.119 R)
• M10: 11,170,473 km (0.085 R)
• M11: 15,565,808 km (0.112 R)
• M12: 16,243,187 km (0.08 R)
• M13: 17,176,828 km (0.034 R)
• M14: 18,833,175 km (0.096 R)
• M15: 24,895,030 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.2

Radius: 13.7

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 4.32 AU - 4.42 AU

Year: 5898 Days

Day: 7.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 63,954,750 km

• M1: 170,392 km (0.082 R)
• M2: 726,447 km (0.096 R)
• M3: 1,187,657 km (0.095 R)
• M4: 1,671,008 km (0.103 R)
• M5: 2,195,050 km (0.075 R)
• M6: 2,774,293 km (0.109 R)
• M7: 5,815,767 km (0.079 R)
• M8: 6,279,071 km (0.058 R)
• M9: 7,315,635 km (0.101 R)
• M10: 8,698,817 km (0.119 R)
• M11: 10,161,435 km (0.083 R)
• M12: 10,653,463 km (0.084 R)
• M13: 11,302,568 km (0.073 R)
• M14: 12,937,822 km (0.084 R)
• M15: 20,012,605 km (0.085 R)
• M16: 23,002,468 km (0.09 R)
• M17: 23,852,782 km (0.095 R)
• M18: 25,207,989 km (0.112 R)
• M19: 27,207,963 km (0.107 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 106.5

Radius: 6.2

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 5.88 AU - 8.14 AU

Year: 11984 Days

Day: 21.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 63,954,750 km

• M1: 77,342 km (0.056 R)
• M2: 312,660 km (0.079 R)
• M3: 1,352,814 km (0.089 R)
• M4: 3,834,493 km (0.084 R)
• M5: 4,875,993 km (0.101 R)
• M6: 5,973,144 km (0.083 R)
• M7: 8,878,185 km (0.067 R)
• M8: 14,376,206 km (0.1 R)
• M9: 16,540,438 km (0.116 R)
• M10: 17,205,401 km (0.086 R)
• M11: 19,639,657 km (0.114 R)
• M12: 22,440,429 km (0.068 R)
• M13: 25,178,967 km (0.045 R)
• M14: 27,793,489 km (0.056 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 868.8

Radius: 5.5

Gravity: 28.72 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 7.27 AU - 7.79 AU

Year: 13342 Days

Day: 24.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 63,954,750 km

• M1: 68,516 km (0.09 R)
• M2: 701,464 km (0.077 R)
• M3: 1,172,399 km (0.073 R)
• M4: 1,553,275 km (0.088 R)
• M5: 2,408,825 km (0.113 R)
• M6: 2,878,562 km (0.082 R)
• M7: 3,198,702 km (0.106 R)
• M8: 3,708,980 km (0.041 R)
• M9: 4,461,158 km (0.04 R)
• M10: 4,655,785 km (0.069 R)
• M11: 6,102,845 km (0.043 R)
• M12: 6,424,630 km (0.101 R)
• M13: 7,594,785 km (0.077 R)
• M14: 10,124,784 km (0.074 R)
• M15: 11,277,435 km (0.112 R)
• M16: 13,433,290 km (0.032 R)
• M17: 15,403,345 km (0.107 R)
• M18: 16,611,497 km (0.084 R)
• M19: 18,044,645 km (0.05 R)
• M20: 18,707,214 km (0.097 R)
• M21: 19,905,792 km (0.052 R)
• M22: 20,613,091 km (0.091 R)
• M23: 24,303,072 km (0.1 R)
• M24: 25,110,751 km (0.117 R)
• M25: 26,567,235 km (0.105 R)
• M26: 28,189,176 km (0.113 R)
• M27: 44,199,738 km (0.09 R)
• M28: 44,798,130 km (0.104 R)
• M29: 56,688,916 km (0.063 R)
• M30: 58,107,254 km (0.118 R)
• M31: 58,286,322 km (0.06 R)
• M32: 60,278,966 km (0.078 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 264.5

Radius: 3.3

Gravity: 24.29 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 8.01 AU - 8.23 AU

Year: 14940 Days

Day: 17.1 Hours

Environment

Temp: -227 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 63,954,750 km

• M1: 40,990 km (0.084 R)
• M2: 289,472 km (0.117 R)
• M3: 469,139 km (0.09 R)
• M4: 602,879 km (0.036 R)
• M5: 879,635 km (0.035 R)
• M6: 1,009,636 km (0.071 R)
• M7: 1,451,997 km (0.05 R)
• M8: 2,185,176 km (0.105 R)
• M9: 2,483,025 km (0.091 R)
• M10: 3,046,112 km (0.113 R)
• M11: 3,870,546 km (0.074 R)
• M12: 4,084,171 km (0.056 R)
• M13: 6,086,539 km (0.041 R)
• M14: 6,787,704 km (0.094 R)
• M15: 7,019,880 km (0.041 R)
• M16: 10,487,708 km (0.087 R)
• M17: 13,995,030 km (0.11 R)
• M18: 15,539,479 km (0.099 R)
• M19: 15,673,070 km (0.051 R)
• M20: 17,480,362 km (0.067 R)
• M21: 19,190,864 km (0.025 R)
• M22: 19,576,976 km (0.076 R)
• M23: 21,009,824 km (0.114 R)
• M24: 22,002,855 km (0.087 R)
• M25: 23,904,094 km (0.068 R)
• M26: 26,669,112 km (0.026 R)
• M27: 27,832,235 km (0.075 R)
• M28: 28,827,061 km (0.095 R)
• M29: 30,572,270 km (0.043 R)
• M30: 31,524,161 km (0.119 R)
• M31: 42,542,493 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 472.3

Radius: 3.9

Gravity: 31.05 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 7.87 AU - 8.99 AU

Year: 15804 Days

Day: 18.4 Hours

Environment

Temp: -236 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 63,954,750 km

• M1: 50,564 km (0.076 R)
• M2: 1,092,812 km (0.083 R)
• M3: 1,295,218 km (0.079 R)
• M4: 1,477,728 km (0.101 R)
• M5: 1,645,427 km (0.072 R)
• M6: 2,364,993 km (0.096 R)
• M7: 2,817,078 km (0.091 R)
• M8: 3,051,497 km (0.028 R)
• M9: 3,833,745 km (0.08 R)
• M10: 4,004,885 km (0.1 R)
• M11: 4,181,111 km (0.111 R)
• M12: 5,491,588 km (0.058 R)
• M13: 5,672,602 km (0.067 R)
• M14: 12,018,992 km (0.073 R)
• M15: 13,929,207 km (0.1 R)
• M16: 14,266,102 km (0.039 R)
• M17: 15,096,819 km (0.099 R)
• M18: 15,238,338 km (0.084 R)
• M19: 16,032,553 km (0.091 R)
• M20: 16,702,602 km (0.092 R)
• M21: 21,296,603 km (0.111 R)
• M22: 21,564,084 km (0.083 R)
• M23: 25,447,196 km (0.084 R)
• M24: 25,647,807 km (0.08 R)
• M25: 32,165,038 km (0.117 R)
• M26: 33,348,507 km (0.106 R)
• M27: 40,244,819 km (0.096 R)
• M28: 40,516,938 km (0.104 R)
• M29: 43,164,521 km (0.061 R)
• M30: 45,334,438 km (0.099 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 302.2

Radius: 5.1

Gravity: 11.62 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 10.06 AU - 11.72 AU

Year: 23204 Days

Day: 15.2 Hours

Environment

Temp: -240 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 63,954,750 km

• M1: 63,429 km (0.047 R)
• M2: 270,473 km (0.08 R)
• M3: 621,878 km (0.043 R)
• M4: 800,947 km (0.109 R)
• M5: 1,737,280 km (0.11 R)
• M6: 1,948,512 km (0.051 R)
• M7: 2,236,488 km (0.085 R)
• M8: 2,921,796 km (0.102 R)
• M9: 3,853,342 km (0.114 R)
• M10: 6,997,590 km (0.108 R)
• M11: 7,719,101 km (0.118 R)
• M12: 9,098,991 km (0.111 R)
• M13: 10,124,036 km (0.025 R)
• M14: 11,465,031 km (0.095 R)
• M15: 12,336,888 km (0.082 R)
• M16: 13,657,986 km (0.119 R)
• M17: 14,141,786 km (0.056 R)
• M18: 16,733,719 km (0.064 R)
• M19: 17,528,682 km (0.101 R)
• M20: 20,152,928 km (0.081 R)
• M21: 20,689,386 km (0.103 R)
• M22: 22,356,055 km (0.116 R)
• M23: 28,555,391 km (0.073 R)
• M24: 30,852,018 km (0.119 R)
• M25: 31,804,208 km (0.044 R)
• M26: 35,809,093 km (0.115 R)
• M27: 37,932,036 km (0.074 R)
• M28: 45,256,797 km (0.101 R)
• M29: 51,124,025 km (0.045 R)
• M30: 61,682,194 km (0.061 R)
• M31: 62,245,131 km (0.106 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 147 - 15,873 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit