🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 570.6

Radius: 13.5

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.57 AU - 0.81 AU

Year: 403 Days

Day: 7.9 Hours

Environment

Temp: -150 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 49,676,830 km

• M1: 169,794 km (0.108 R)
• M2: 1,012,478 km (0.107 R)
• M3: 1,482,066 km (0.039 R)
• M4: 2,189,215 km (0.094 R)
• M5: 2,835,328 km (0.109 R)
• M6: 4,216,865 km (0.062 R)
• M7: 4,680,469 km (0.103 R)
• M8: 5,254,326 km (0.034 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.6

Radius: 13.4

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.75 AU - 1.11 AU

Year: 630 Days

Day: 7.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,676,830 km

• M1: 166,802 km (0.12 R)
• M2: 587,471 km (0.086 R)
• M3: 1,072,467 km (0.106 R)
• M4: 1,533,677 km (0.062 R)
• M5: 2,094,221 km (0.115 R)
• M6: 2,956,054 km (0.118 R)
• M7: 3,597,530 km (0.114 R)
• M8: 4,601,182 km (0.108 R)
• M9: 5,397,342 km (0.105 R)
• M10: 6,002,465 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 740.3

Radius: 12.4

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.11 AU - 1.55 AU

Year: 1078 Days

Day: 13.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 49,676,830 km

• M1: 154,235 km (0.114 R)
• M2: 571,015 km (0.076 R)
• M3: 1,003,802 km (0.095 R)
• M4: 1,594,713 km (0.113 R)
• M5: 2,073,726 km (0.097 R)
• M6: 2,492,301 km (0.077 R)
• M7: 2,954,558 km (0.075 R)
• M8: 3,955,667 km (0.052 R)
• M9: 5,249,539 km (0.109 R)
• M10: 7,217,050 km (0.061 R)
• M11: 8,218,458 km (0.093 R)
• M12: 9,725,208 km (0.078 R)
• M13: 10,307,892 km (0.032 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 134.2

Radius: 12.8

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 1.81 AU - 2.41 AU

Year: 2154 Days

Day: 12.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 49,676,830 km

• M1: 159,172 km (0.087 R)
• M2: 743,202 km (0.116 R)
• M3: 1,397,244 km (0.076 R)
• M4: 3,393,628 km (0.057 R)
• M5: 4,584,277 km (0.113 R)
• M6: 5,627,573 km (0.045 R)
• M7: 6,120,647 km (0.095 R)
• M8: 9,625,725 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 879.7

Radius: 8.9

Gravity: 11.11 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 2.51 AU - 2.99 AU

Year: 3206 Days

Day: 8 Hours

Environment

Temp: -212 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 49,676,830 km

• M1: 111,899 km (0.096 R)
• M2: 467,942 km (0.064 R)
• M3: 1,170,155 km (0.109 R)
• M4: 1,529,638 km (0.096 R)
• M5: 2,398,951 km (0.092 R)
• M6: 3,057,032 km (0.108 R)
• M7: 3,390,337 km (0.118 R)
• M8: 3,978,555 km (0.101 R)
• M9: 4,376,935 km (0.082 R)
• M10: 5,384,177 km (0.095 R)
• M11: 5,844,490 km (0.069 R)
• M12: 6,330,832 km (0.077 R)
• M13: 6,629,280 km (0.102 R)
• M14: 7,884,705 km (0.089 R)
• M15: 8,586,768 km (0.08 R)
• M16: 8,990,383 km (0.102 R)
• M17: 10,318,364 km (0.114 R)
• M18: 10,943,982 km (0.062 R)
• M19: 11,244,374 km (0.108 R)
• M20: 11,683,295 km (0.117 R)
• M21: 14,253,536 km (0.115 R)
• M22: 15,724,531 km (0.099 R)
• M23: 16,440,806 km (0.116 R)
• M24: 18,176,740 km (0.073 R)
• M25: 20,676,819 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.2

Radius: 13.7

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 3.55 AU - 3.89 AU

Year: 5043 Days

Day: 14.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 49,676,830 km

• M1: 170,392 km (0.077 R)
• M2: 829,819 km (0.062 R)
• M3: 1,988,455 km (0.038 R)
• M4: 2,817,975 km (0.11 R)
• M5: 3,645,551 km (0.094 R)
• M6: 4,434,978 km (0.093 R)
• M7: 4,912,196 km (0.044 R)
• M8: 5,489,943 km (0.04 R)
• M9: 5,923,627 km (0.119 R)
• M10: 7,751,563 km (0.06 R)
• M11: 8,328,562 km (0.106 R)
• M12: 8,996,367 km (0.118 R)
• M13: 10,132,114 km (0.112 R)
• M14: 13,125,418 km (0.096 R)
• M15: 13,696,882 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.1

Radius: 14.8

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 5.18 AU - 5.48 AU

Year: 8650 Days

Day: 14.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 49,676,830 km

• M1: 184,005 km (0.088 R)
• M2: 774,917 km (0.102 R)
• M3: 1,263,952 km (0.101 R)
• M4: 2,386,684 km (0.118 R)
• M5: 2,866,445 km (0.102 R)
• M6: 3,662,305 km (0.088 R)
• M7: 4,547,027 km (0.051 R)
• M8: 5,633,407 km (0.042 R)
• M9: 7,715,510 km (0.092 R)
• M10: 10,509,849 km (0.04 R)
• M11: 12,785,532 km (0.11 R)
• M12: 18,013,229 km (0.118 R)
• M13: 20,712,573 km (0.064 R)
• M14: 22,682,628 km (0.116 R)
• M15: 25,383,168 km (0.077 R)
• M16: 26,992,991 km (0.047 R)
• M17: 27,822,960 km (0.093 R)
• M18: 30,021,600 km (0.118 R)
• M19: 32,851,842 km (0.086 R)
• M20: 38,225,547 km (0.047 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 79.7

Radius: 11

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 4.37 AU - 6.33 AU

Year: 8698 Days

Day: 11.4 Hours

Environment

Temp: -231 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 49,676,830 km

• M1: 137,032 km (0.044 R)
• M2: 831,016 km (0.083 R)
• M3: 3,817,738 km (0.08 R)
• M4: 6,827,796 km (0.099 R)
• M5: 7,783,876 km (0.116 R)
• M6: 8,378,528 km (0.115 R)
• M7: 10,190,757 km (0.117 R)
• M8: 18,531,735 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 316.6

Radius: 7.5

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 6.32 AU - 9.42 AU

Year: 15519 Days

Day: 23.9 Hours

Environment

Temp: -228 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,676,830 km

• M1: 94,097 km (0.047 R)
• M2: 328,367 km (0.071 R)
• M3: 1,205,160 km (0.097 R)
• M4: 1,628,373 km (0.12 R)
• M5: 2,584,453 km (0.113 R)
• M6: 2,879,011 km (0.111 R)
• M7: 3,290,405 km (0.113 R)
• M8: 3,586,160 km (0.075 R)
• M9: 10,173,553 km (0.102 R)
• M10: 11,292,545 km (0.095 R)
• M11: 15,821,920 km (0.104 R)
• M12: 17,990,191 km (0.113 R)
• M13: 27,332,129 km (0.12 R)
• M14: 30,115,847 km (0.115 R)
• M15: 30,867,277 km (0.089 R)
• M16: 34,345,876 km (0.103 R)
• M17: 38,955,734 km (0.066 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 388 - 14,071 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit