🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.68

Radius: 0.86

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.42 AU - 0.64 AU

Year: 245 Days

Day: 42 Hours

Environment

Temp: -113 °C

Axial Tilt: 43.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.3

Radius: 9.9

Gravity: 6.4 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.81 AU - 1.09 AU

Year: 589 Days

Day: 14.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 91,609,170 km

• M1: 124,017 km (0.117 R)
• M2: 440,715 km (0.114 R)
• M3: 819,048 km (0.083 R)
• M4: 1,332,169 km (0.059 R)
• M5: 1,764,656 km (0.077 R)
• M6: 2,456,696 km (0.117 R)
• M7: 2,985,076 km (0.089 R)
• M8: 3,509,716 km (0.118 R)
• M9: 4,665,060 km (0.071 R)
• M10: 5,726,307 km (0.118 R)
• M11: 6,498,681 km (0.066 R)
• M12: 6,920,547 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.1

Radius: 10.8

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.35 AU - 1.41 AU

Year: 1031 Days

Day: 8.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 91,609,170 km

• M1: 134,339 km (0.054 R)
• M2: 745,596 km (0.091 R)
• M3: 1,628,373 km (0.088 R)
• M4: 2,672,566 km (0.095 R)
• M5: 3,058,379 km (0.112 R)
• M6: 5,108,767 km (0.1 R)
• M7: 6,490,304 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 872.5

Radius: 13.5

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.7 AU - 2.04 AU

Year: 1626 Days

Day: 14.1 Hours

Environment

Temp: -187 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 91,609,170 km

• M1: 167,849 km (0.083 R)
• M2: 660,175 km (0.113 R)
• M3: 1,278,015 km (0.094 R)
• M4: 1,850,526 km (0.064 R)
• M5: 2,447,272 km (0.112 R)
• M6: 2,958,747 km (0.093 R)
• M7: 3,409,186 km (0.037 R)
• M8: 3,834,493 km (0.08 R)
• M9: 4,411,492 km (0.09 R)
• M10: 5,241,311 km (0.066 R)
• M11: 5,787,792 km (0.116 R)
• M12: 7,130,433 km (0.089 R)
• M13: 7,659,261 km (0.077 R)
• M14: 8,244,339 km (0.07 R)
• M15: 9,537,163 km (0.116 R)
• M16: 10,852,428 km (0.04 R)
• M17: 11,478,645 km (0.081 R)
• M18: 13,503,003 km (0.062 R)
• M19: 14,402,086 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 751.3

Radius: 8.8

Gravity: 9.7 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.22 AU - 2.8 AU

Year: 2528 Days

Day: 5.4 Hours

Environment

Temp: -204 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 91,609,170 km

• M1: 109,805 km (0.091 R)
• M2: 420,220 km (0.03 R)
• M3: 735,573 km (0.108 R)
• M4: 1,376,899 km (0.111 R)
• M5: 1,749,846 km (0.028 R)
• M6: 2,324,302 km (0.037 R)
• M7: 2,701,438 km (0.084 R)
• M8: 3,239,093 km (0.042 R)
• M9: 3,692,375 km (0.035 R)
• M10: 5,837,907 km (0.101 R)
• M11: 6,510,649 km (0.069 R)
• M12: 6,996,842 km (0.072 R)
• M13: 7,755,902 km (0.107 R)
• M14: 8,806,228 km (0.076 R)
• M15: 9,437,232 km (0.091 R)
• M16: 10,632,968 km (0.088 R)
• M17: 11,801,178 km (0.068 R)
• M18: 16,176,167 km (0.11 R)
• M19: 17,229,336 km (0.107 R)
• M20: 18,048,834 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.2

Radius: 10.2

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 3.06 AU - 3.9 AU

Year: 4128 Days

Day: 8.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 91,609,170 km

• M1: 132,693 km (0.109 R)
• M2: 631,453 km (0.118 R)
• M3: 1,174,642 km (0.072 R)
• M4: 1,653,056 km (0.069 R)
• M5: 2,170,815 km (0.088 R)
• M6: 2,527,157 km (0.073 R)
• M7: 2,851,934 km (0.045 R)
• M8: 4,491,377 km (0.039 R)
• M9: 5,092,611 km (0.101 R)
• M10: 7,222,136 km (0.074 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 392.2

Radius: 7.1

Gravity: 7.78 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 9.29 AU - 10.19 AU

Year: 19327 Days

Day: 17.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 91,609,170 km

• M1: 88,412 km (0.078 R)
• M2: 345,721 km (0.095 R)
• M3: 581,637 km (0.071 R)
• M4: 878,439 km (0.103 R)
• M5: 1,500,915 km (0.057 R)
• M6: 2,224,820 km (0.086 R)
• M7: 2,642,796 km (0.118 R)
• M8: 3,392,730 km (0.094 R)
• M9: 4,464,150 km (0.048 R)
• M10: 6,051,832 km (0.048 R)
• M11: 7,936,466 km (0.105 R)
• M12: 8,759,404 km (0.063 R)
• M13: 9,321,443 km (0.028 R)
• M14: 13,948,655 km (0.063 R)
• M15: 15,289,202 km (0.087 R)
• M16: 17,417,979 km (0.092 R)
• M17: 21,513,819 km (0.115 R)
• M18: 22,724,515 km (0.1 R)
• M19: 23,298,372 km (0.118 R)
• M20: 23,686,280 km (0.102 R)
• M21: 23,980,090 km (0.099 R)
• M22: 26,734,187 km (0.097 R)
• M23: 29,128,800 km (0.078 R)
• M24: 34,968,801 km (0.098 R)
• M25: 38,094,499 km (0.025 R)
• M26: 38,497,815 km (0.083 R)
• M27: 42,401,123 km (0.078 R)
• M28: 43,416,444 km (0.099 R)
• M29: 44,448,071 km (0.084 R)
• M30: 46,867,218 km (0.096 R)
• M31: 48,580,413 km (0.108 R)
• M32: 49,054,787 km (0.061 R)
• M33: 51,309,377 km (0.107 R)
• M34: 51,636,996 km (0.113 R)
• M35: 61,020,074 km (0.098 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 913.4

Radius: 6.3

Gravity: 23.01 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 10.58 AU - 11.22 AU

Year: 22881 Days

Day: 18.4 Hours

Environment

Temp: -230 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 91,609,170 km

• M1: 78,539 km (0.053 R)
• M2: 329,564 km (0.106 R)
• M3: 1,281,455 km (0.116 R)
• M4: 1,614,011 km (0.1 R)
• M5: 1,879,996 km (0.047 R)
• M6: 2,428,123 km (0.102 R)
• M7: 3,191,521 km (0.073 R)
• M8: 3,427,886 km (0.092 R)
• M9: 3,969,131 km (0.092 R)
• M10: 4,866,718 km (0.087 R)
• M11: 5,301,749 km (0.087 R)
• M12: 6,158,795 km (0.083 R)
• M13: 7,509,065 km (0.032 R)
• M14: 10,585,246 km (0.087 R)
• M15: 13,247,639 km (0.115 R)
• M16: 13,705,110 km (0.119 R)
• M17: 14,252,339 km (0.028 R)
• M18: 14,895,161 km (0.061 R)
• M19: 15,725,878 km (0.111 R)
• M20: 17,029,174 km (0.117 R)
• M21: 18,686,270 km (0.092 R)
• M22: 19,068,642 km (0.08 R)
• M23: 20,247,025 km (0.092 R)
• M24: 24,072,541 km (0.074 R)
• M25: 26,273,724 km (0.044 R)
• M26: 30,805,493 km (0.094 R)
• M27: 34,242,055 km (0.037 R)
• M28: 44,694,458 km (0.102 R)
• M29: 48,541,667 km (0.059 R)
• M30: 50,545,530 km (0.081 R)
• M31: 55,303,640 km (0.073 R)
• M32: 61,607,395 km (0.066 R)
• M33: 62,666,997 km (0.092 R)
• M34: 75,376,832 km (0.076 R)
• M35: 76,588,724 km (0.087 R)
• M36: 81,820,461 km (0.114 R)
• M37: 84,653,845 km (0.118 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: 193 - 18,198 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit