🌌 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: 0.34

Radius: 0.65

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.52 AU - 0.52 AU

Year: 246 Days

Day: 17 Hours

Environment

Temp: -126 °C

Axial Tilt: 20.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 25,164,970 km

• M1: 21,243 km (0.099 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 379.2

Radius: 9.8

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.66 AU - 0.76 AU

Year: 392 Days

Day: 14.9 Hours

Environment

Temp: -137 °C

Axial Tilt: 46.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 25,164,970 km

• M1: 121,922 km (0.089 R)
• M2: 451,935 km (0.105 R)
• M3: 890,407 km (0.102 R)
• M4: 1,292,376 km (0.071 R)
• M5: 1,639,144 km (0.032 R)
• M6: 2,133,415 km (0.112 R)
• M7: 2,819,321 km (0.12 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182

Radius: 9.9

Gravity: 1.86 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.71 AU - 1.11 AU

Year: 569 Days

Day: 13.9 Hours

Environment

Temp: -144 °C

Axial Tilt: 51.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 25,164,970 km

• M1: 123,119 km (0.108 R)
• M2: 506,389 km (0.083 R)
• M3: 894,146 km (0.11 R)
• M4: 1,330,673 km (0.104 R)
• M5: 1,793,379 km (0.032 R)
• M6: 2,570,091 km (0.111 R)
• M7: 3,209,772 km (0.058 R)
• M8: 4,249,178 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.2

Radius: 13.4

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.45 AU - 1.59 AU

Year: 1229 Days

Day: 5.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 25,164,970 km

• M1: 166,652 km (0.105 R)
• M2: 678,426 km (0.115 R)
• M3: 2,112,322 km (0.118 R)
• M4: 2,640,253 km (0.112 R)
• M5: 3,285,768 km (0.048 R)
• M6: 3,849,602 km (0.032 R)
• M7: 4,350,456 km (0.07 R)
• M8: 4,993,128 km (0.041 R)
• M9: 5,633,557 km (0.077 R)
• M10: 6,781,870 km (0.071 R)
• M11: 7,463,887 km (0.094 R)
• M12: 7,916,570 km (0.073 R)
• M13: 8,558,195 km (0.106 R)
• M14: 9,024,791 km (0.103 R)
• M15: 9,447,106 km (0.108 R)
• M16: 10,429,216 km (0.089 R)
• M17: 11,689,428 km (0.056 R)
• M18: 12,191,927 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 230.8

Radius: 13.7

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 2.36 AU - 2.48 AU

Year: 2470 Days

Day: 13.8 Hours

Environment

Temp: -193 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 25,164,970 km

• M1: 195,076 km (0.108 R)
• M2: 790,176 km (0.118 R)
• M3: 1,603,540 km (0.104 R)
• M4: 2,045,601 km (0.1 R)
• M5: 2,545,109 km (0.099 R)
• M6: 4,769,330 km (0.037 R)
• M7: 5,994,835 km (0.105 R)
• M8: 10,000,318 km (0.119 R)
• M9: 12,292,607 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 707.8

Radius: 12.2

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 3.02 AU - 3.96 AU

Year: 4277 Days

Day: 8.1 Hours

Environment

Temp: -197 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 25,164,970 km

• M1: 151,842 km (0.086 R)
• M2: 1,294,770 km (0.118 R)
• M3: 1,737,430 km (0.108 R)
• M4: 4,247,682 km (0.107 R)
• M5: 4,703,207 km (0.085 R)
• M6: 5,517,020 km (0.077 R)
• M7: 6,149,968 km (0.104 R)
• M8: 6,830,639 km (0.112 R)
• M9: 7,323,265 km (0.095 R)
• M10: 9,138,784 km (0.103 R)
• M11: 10,620,102 km (0.113 R)
• M12: 11,785,619 km (0.045 R)
• M13: 13,284,441 km (0.113 R)
• M14: 14,636,656 km (0.099 R)
• M15: 16,078,480 km (0.082 R)
• M16: 17,980,766 km (0.08 R)
• M17: 18,986,064 km (0.09 R)
• M18: 20,228,325 km (0.064 R)
• M19: 21,523,842 km (0.071 R)
• M20: 23,755,394 km (0.103 R)
• M21: 24,888,897 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.4

Radius: 12

Gravity: 6.12 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 3.24 AU - 4.1 AU

Year: 4612 Days

Day: 5.9 Hours

Environment

Temp: -212 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 25,164,970 km

• M1: 149,448 km (0.083 R)
• M2: 821,891 km (0.096 R)
• M3: 2,237,386 km (0.099 R)
• M4: 3,223,385 km (0.068 R)
• M5: 3,748,773 km (0.098 R)
• M6: 4,233,620 km (0.099 R)
• M7: 6,575,275 km (0.097 R)
• M8: 7,110,536 km (0.105 R)
• M9: 7,638,617 km (0.089 R)
• M10: 8,655,134 km (0.041 R)
• M11: 9,423,020 km (0.116 R)
• M12: 9,845,185 km (0.064 R)
• M13: 12,497,705 km (0.111 R)
• M14: 13,268,134 km (0.091 R)
• M15: 14,070,129 km (0.108 R)
• M16: 15,017,681 km (0.111 R)
• M17: 16,007,271 km (0.097 R)
• M18: 17,667,658 km (0.092 R)
• M19: 18,836,616 km (0.106 R)
• M20: 20,756,555 km (0.094 R)
• M21: 22,428,610 km (0.086 R)
• M22: 26,039,155 km (0.106 R)
• M23: 28,068,899 km (0.041 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.1

Radius: 8

Gravity: 6.61 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 3.07 AU - 4.51 AU

Year: 4840 Days

Day: 12.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 25,164,970 km

• M1: 99,483 km (0.097 R)
• M2: 348,563 km (0.102 R)
• M3: 673,639 km (0.069 R)
• M4: 1,268,889 km (0.088 R)
• M5: 2,368,433 km (0.101 R)
• M6: 3,289,358 km (0.092 R)
• M7: 4,112,595 km (0.041 R)
• M8: 4,741,505 km (0.045 R)
• M9: 5,406,018 km (0.105 R)
• M10: 5,733,039 km (0.106 R)
• M11: 8,050,609 km (0.058 R)
• M12: 9,971,147 km (0.047 R)
• M13: 11,903,054 km (0.096 R)
• M14: 12,270,915 km (0.055 R)
• M15: 13,224,003 km (0.112 R)
• M16: 14,797,324 km (0.116 R)
• M17: 17,532,721 km (0.12 R)
• M18: 17,829,523 km (0.111 R)
• M19: 18,988,159 km (0.054 R)
• M20: 19,809,301 km (0.106 R)
• M21: 23,403,240 km (0.083 R)
• M22: 24,053,842 km (0.093 R)
• M23: 24,716,560 km (0.115 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: 352 - 15,943 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit