🌌 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: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.43 AU - 0.67 AU

Year: 268 Days

Day: 21.8 Hours

Environment

Temp: -125 °C

Axial Tilt: 33.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 62,234,183 km

• M1: 32,463 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 469.4

Radius: 9.2

Gravity: 5.55 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.67 AU - 0.91 AU

Year: 461 Days

Day: 7.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,234,183 km

• M1: 114,442 km (0.078 R)
• M2: 464,950 km (0.086 R)
• M3: 770,878 km (0.108 R)
• M4: 1,135,597 km (0.062 R)
• M5: 1,424,770 km (0.087 R)
• M6: 1,771,239 km (0.045 R)
• M7: 2,357,064 km (0.096 R)
• M8: 2,755,294 km (0.113 R)
• M9: 3,175,963 km (0.069 R)
• M10: 3,749,371 km (0.097 R)
• M11: 4,199,960 km (0.061 R)
• M12: 4,832,161 km (0.118 R)
• M13: 5,287,986 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 982.1

Radius: 11.6

Gravity: 7.3 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.77 AU - 0.97 AU

Year: 532 Days

Day: 5.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,234,183 km

• M1: 144,212 km (0.099 R)
• M2: 521,349 km (0.049 R)
• M3: 1,059,901 km (0.118 R)
• M4: 1,434,045 km (0.082 R)
• M5: 1,985,164 km (0.045 R)
• M6: 2,556,328 km (0.053 R)
• M7: 3,247,321 km (0.074 R)
• M8: 3,691,776 km (0.068 R)
• M9: 4,358,085 km (0.114 R)
• M10: 4,785,486 km (0.089 R)
• M11: 5,206,155 km (0.057 R)
• M12: 5,706,560 km (0.118 R)
• M13: 6,357,311 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 802.4

Radius: 14.2

Gravity: 3.98 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.9 AU - 1 AU

Year: 607 Days

Day: 12.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 62,234,183 km

• M1: 176,825 km (0.036 R)
• M2: 629,209 km (0.103 R)
• M3: 1,509,592 km (0.108 R)
• M4: 2,513,095 km (0.1 R)
• M5: 3,797,991 km (0.105 R)
• M6: 5,556,364 km (0.103 R)
• M7: 6,216,390 km (0.089 R)
• M8: 7,581,171 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 523

Radius: 14.3

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.9 AU - 1.06 AU

Year: 636 Days

Day: 6.2 Hours

Environment

Temp: -148 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 62,234,183 km

• M1: 177,872 km (0.108 R)
• M2: 633,248 km (0.119 R)
• M3: 1,096,702 km (0.088 R)
• M4: 1,699,881 km (0.08 R)
• M5: 2,686,329 km (0.105 R)
• M6: 3,188,978 km (0.11 R)
• M7: 3,834,941 km (0.083 R)
• M8: 4,737,017 km (0.077 R)
• M9: 5,391,358 km (0.045 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819

Radius: 8.3

Gravity: 11.89 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.79 AU - 1.25 AU

Year: 676 Days

Day: 10 Hours

Environment

Temp: -162 °C

Axial Tilt: 166.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 62,234,183 km

• M1: 103,223 km (0.059 R)
• M2: 381,624 km (0.093 R)
• M3: 1,036,863 km (0.108 R)
• M4: 1,599,052 km (0.12 R)
• M5: 2,042,609 km (0.082 R)
• M6: 2,414,061 km (0.032 R)
• M7: 2,865,996 km (0.103 R)
• M8: 3,267,217 km (0.094 R)
• M9: 3,734,262 km (0.107 R)
• M10: 4,167,198 km (0.051 R)
• M11: 4,599,985 km (0.107 R)
• M12: 5,205,408 km (0.043 R)
• M13: 6,020,566 km (0.112 R)
• M14: 6,553,135 km (0.118 R)
• M15: 6,961,986 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.7

Radius: 14.5

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.07 AU - 1.31 AU

Year: 852 Days

Day: 14.8 Hours

Environment

Temp: -158 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 62,234,183 km

• M1: 181,013 km (0.075 R)
• M2: 772,374 km (0.102 R)
• M3: 1,483,113 km (0.109 R)
• M4: 2,232,299 km (0.055 R)
• M5: 3,086,204 km (0.066 R)
• M6: 4,508,281 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 388.3

Radius: 8.5

Gravity: 5.37 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.29 AU - 1.37 AU

Year: 1006 Days

Day: 8 Hours

Environment

Temp: -169 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 62,234,183 km

• M1: 105,766 km (0.105 R)
• M2: 415,882 km (0.103 R)
• M3: 738,116 km (0.083 R)
• M4: 1,037,312 km (0.088 R)
• M5: 1,374,804 km (0.08 R)
• M6: 1,725,462 km (0.096 R)
• M7: 2,077,316 km (0.104 R)
• M8: 2,598,365 km (0.104 R)
• M9: 2,951,117 km (0.067 R)
• M10: 3,512,708 km (0.032 R)
• M11: 5,515,823 km (0.101 R)
• M12: 5,981,072 km (0.118 R)
• M13: 6,326,195 km (0.058 R)
• M14: 6,684,482 km (0.038 R)
• M15: 7,145,841 km (0.03 R)
• M16: 7,675,418 km (0.076 R)
• M17: 8,132,439 km (0.102 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 98.8

Radius: 5.9

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 4.66 AU - 7.66 AU

Year: 10030 Days

Day: 20.7 Hours

Environment

Temp: -225 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 62,234,183 km

• M1: 73,453 km (0.096 R)
• M2: 590,014 km (0.074 R)
• M3: 935,435 km (0.081 R)
• M4: 1,495,380 km (0.084 R)
• M5: 3,503,732 km (0.085 R)
• M6: 3,962,249 km (0.06 R)
• M7: 4,161,214 km (0.085 R)
• M8: 5,204,959 km (0.085 R)
• M9: 5,497,871 km (0.119 R)
• M10: 6,204,572 km (0.115 R)
• M11: 8,986,045 km (0.03 R)
• M12: 10,710,609 km (0.045 R)
• M13: 12,408,395 km (0.104 R)
• M14: 13,272,024 km (0.115 R)
• M15: 18,749,849 km (0.067 R)
• M16: 24,737,653 km (0.105 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 272

Radius: 7.4

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 8.72 AU - 13 AU

Year: 23478 Days

Day: 15.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 62,234,183 km

• M1: 113,395 km (0.031 R)
• M2: 366,066 km (0.077 R)
• M3: 1,028,485 km (0.082 R)
• M4: 1,639,144 km (0.033 R)
• M5: 2,090,331 km (0.112 R)
• M6: 3,369,094 km (0.083 R)
• M7: 5,385,523 km (0.087 R)
• M8: 6,140,693 km (0.083 R)
• M9: 7,674,820 km (0.113 R)
• M10: 9,607,923 km (0.116 R)
• M11: 9,986,256 km (0.12 R)
• M12: 10,487,409 km (0.09 R)
• M13: 20,684,299 km (0.099 R)
• M14: 30,498,368 km (0.061 R)
• M15: 33,116,929 km (0.081 R)
• M16: 34,985,856 km (0.1 R)
• M17: 40,311,390 km (0.112 R)
• M18: 51,871,266 km (0.056 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: 480 - 13,877 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit