🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.7

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.48 AU - 0.68 AU

Year: 285 Days

Day: 42.9 Hours

Environment

Temp: -129 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 50,105,988 km

• M1: 43,383 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.9

Radius: 10.4

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.65 AU - 0.85 AU

Year: 419 Days

Day: 10.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,105,988 km

• M1: 129,552 km (0.097 R)
• M2: 470,635 km (0.085 R)
• M3: 806,482 km (0.095 R)
• M4: 1,230,742 km (0.109 R)
• M5: 1,661,135 km (0.076 R)
• M6: 2,510,103 km (0.075 R)
• M7: 3,118,517 km (0.117 R)
• M8: 3,580,775 km (0.077 R)
• M9: 4,314,552 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.3

Radius: 10.1

Gravity: 8.27 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.66 AU - 0.84 AU

Year: 419 Days

Day: 7.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,105,988 km

• M1: 125,662 km (0.053 R)
• M2: 448,494 km (0.086 R)
• M3: 1,141,881 km (0.076 R)
• M4: 1,511,387 km (0.12 R)
• M5: 2,719,540 km (0.115 R)
• M6: 3,499,992 km (0.087 R)
• M7: 4,336,842 km (0.067 R)
• M8: 5,400,633 km (0.099 R)
• M9: 5,756,676 km (0.034 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.7

Radius: 11.6

Gravity: 5.17 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.74 AU - 1.14 AU

Year: 588 Days

Day: 12.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 50,105,988 km

• M1: 144,362 km (0.093 R)
• M2: 558,449 km (0.12 R)
• M3: 934,388 km (0.066 R)
• M4: 1,589,477 km (0.039 R)
• M5: 2,226,615 km (0.11 R)
• M6: 2,712,359 km (0.086 R)
• M7: 3,368,196 km (0.091 R)
• M8: 4,641,424 km (0.094 R)
• M9: 5,046,684 km (0.099 R)
• M10: 6,097,759 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.5

Radius: 10.5

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.79 AU - 1.23 AU

Year: 655 Days

Day: 14.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,105,988 km

• M1: 130,599 km (0.086 R)
• M2: 531,521 km (0.063 R)
• M3: 1,020,108 km (0.061 R)
• M4: 1,427,164 km (0.085 R)
• M5: 1,760,617 km (0.057 R)
• M6: 2,441,736 km (0.1 R)
• M7: 2,936,157 km (0.102 R)
• M8: 3,266,619 km (0.097 R)
• M9: 3,895,379 km (0.116 R)
• M10: 4,455,174 km (0.064 R)
• M11: 4,988,191 km (0.084 R)
• M12: 5,377,894 km (0.079 R)
• M13: 5,946,964 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.7

Radius: 8

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.05 AU - 1.63 AU

Year: 1002 Days

Day: 14.1 Hours

Environment

Temp: -170 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 50,105,988 km

• M1: 99,483 km (0.069 R)
• M2: 436,527 km (0.119 R)
• M3: 733,179 km (0.079 R)
• M4: 1,117,795 km (0.11 R)
• M5: 1,393,055 km (0.117 R)
• M6: 1,730,249 km (0.074 R)
• M7: 2,018,524 km (0.096 R)
• M8: 2,268,053 km (0.041 R)
• M9: 2,549,297 km (0.106 R)
• M10: 2,877,216 km (0.119 R)
• M11: 3,402,304 km (0.085 R)
• M12: 3,687,887 km (0.085 R)
• M13: 5,848,678 km (0.114 R)
• M14: 6,669,821 km (0.082 R)
• M15: 7,680,055 km (0.038 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590.7

Radius: 11.1

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 2.48 AU - 3.16 AU

Year: 3058 Days

Day: 9.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 50,105,988 km

• M1: 139,126 km (0.075 R)
• M2: 561,142 km (0.041 R)
• M3: 960,867 km (0.112 R)
• M4: 1,494,333 km (0.068 R)
• M5: 2,088,386 km (0.111 R)
• M6: 3,235,054 km (0.108 R)
• M7: 3,789,164 km (0.106 R)
• M8: 4,670,446 km (0.081 R)
• M9: 5,580,749 km (0.065 R)
• M10: 6,720,385 km (0.077 R)
• M11: 7,253,851 km (0.115 R)
• M12: 7,847,456 km (0.041 R)
• M13: 8,238,804 km (0.074 R)
• M14: 8,955,228 km (0.067 R)
• M15: 9,346,725 km (0.106 R)
• M16: 10,012,137 km (0.026 R)
• M17: 10,669,320 km (0.083 R)
• M18: 11,562,270 km (0.119 R)
• M19: 12,112,940 km (0.085 R)
• M20: 13,870,415 km (0.103 R)
• M21: 14,299,163 km (0.106 R)
• M22: 15,587,201 km (0.04 R)
• M23: 16,154,924 km (0.114 R)
• M24: 16,897,229 km (0.036 R)
• M25: 18,053,321 km (0.038 R)
• M26: 18,910,816 km (0.103 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867.5

Radius: 9.4

Gravity: 9.82 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 3.19 AU - 4.61 AU

Year: 4973 Days

Day: 14.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 50,105,988 km

• M1: 117,135 km (0.106 R)
• M2: 452,982 km (0.033 R)
• M3: 791,373 km (0.068 R)
• M4: 1,271,881 km (0.039 R)
• M5: 1,896,602 km (0.094 R)
• M6: 2,917,607 km (0.057 R)
• M7: 3,956,116 km (0.075 R)
• M8: 4,598,938 km (0.113 R)
• M9: 5,167,559 km (0.084 R)
• M10: 6,478,037 km (0.073 R)
• M11: 8,188,389 km (0.079 R)
• M12: 8,539,944 km (0.109 R)
• M13: 10,225,613 km (0.102 R)
• M14: 10,679,493 km (0.116 R)
• M15: 11,433,765 km (0.109 R)
• M16: 12,425,898 km (0.107 R)
• M17: 15,331,837 km (0.119 R)
• M18: 16,352,394 km (0.099 R)
• M19: 19,895,320 km (0.044 R)
• M20: 20,603,367 km (0.086 R)
• M21: 21,108,858 km (0.092 R)
• M22: 22,598,853 km (0.041 R)
• M23: 23,604,300 km (0.088 R)
• M24: 23,919,503 km (0.098 R)
• M25: 25,290,866 km (0.075 R)
• M26: 26,799,262 km (0.034 R)
• M27: 29,445,050 km (0.082 R)
• M28: 30,831,074 km (0.09 R)
• M29: 31,302,756 km (0.096 R)
• M30: 31,683,333 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 243.4

Radius: 7.1

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 8.62 AU - 9.72 AU

Year: 17930 Days

Day: 23.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 48.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 50,105,988 km

• M1: 88,263 km (0.083 R)
• M2: 851,212 km (0.085 R)
• M3: 1,372,411 km (0.078 R)
• M4: 1,696,739 km (0.074 R)
• M5: 2,663,141 km (0.073 R)
• M6: 4,177,072 km (0.079 R)
• M7: 5,052,668 km (0.106 R)
• M8: 5,482,762 km (0.084 R)
• M9: 5,972,845 km (0.063 R)
• M10: 9,449,050 km (0.085 R)
• M11: 10,518,376 km (0.118 R)
• M12: 14,015,525 km (0.105 R)
• M13: 15,064,506 km (0.111 R)
• M14: 17,614,700 km (0.047 R)
• M15: 19,070,138 km (0.067 R)
• M16: 20,356,680 km (0.089 R)
• M17: 20,853,644 km (0.1 R)
• M18: 23,460,985 km (0.092 R)
• M19: 26,571,424 km (0.056 R)
• M20: 37,532,161 km (0.118 R)
• M21: 38,530,727 km (0.077 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: 277 - 16,249 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit