🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.96

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.46 AU - 0.72 AU

Year: 288 Days

Day: 14.4 Hours

Environment

Temp: -133 °C

Axial Tilt: 26.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 327.9

Radius: 11

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.66 AU - 0.84 AU

Year: 413 Days

Day: 11.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 32,128,182 km

• M1: 136,882 km (0.033 R)
• M2: 511,774 km (0.047 R)
• M3: 899,532 km (0.083 R)
• M4: 1,324,091 km (0.062 R)
• M5: 1,737,729 km (0.079 R)
• M6: 2,081,206 km (0.094 R)
• M7: 2,487,962 km (0.08 R)
• M8: 2,928,229 km (0.1 R)
• M9: 3,292,350 km (0.111 R)
• M10: 4,453,828 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.5

Radius: 12.6

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.31 AU - 1.47 AU

Year: 1042 Days

Day: 13.1 Hours

Environment

Temp: -169 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 32,128,182 km

• M1: 156,928 km (0.079 R)
• M2: 603,478 km (0.073 R)
• M3: 1,056,759 km (0.078 R)
• M4: 1,521,111 km (0.088 R)
• M5: 1,980,526 km (0.097 R)
• M6: 2,509,654 km (0.112 R)
• M7: 3,314,042 km (0.046 R)
• M8: 4,065,921 km (0.072 R)
• M9: 5,255,224 km (0.059 R)
• M10: 5,845,986 km (0.1 R)
• M11: 6,279,071 km (0.107 R)
• M12: 7,481,390 km (0.076 R)
• M13: 8,150,840 km (0.107 R)
• M14: 9,579,948 km (0.109 R)
• M15: 10,091,573 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.2

Radius: 14.7

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 2.07 AU - 2.13 AU

Year: 1935 Days

Day: 14.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 32,128,182 km

• M1: 182,809 km (0.063 R)
• M2: 706,252 km (0.038 R)
• M3: 1,221,167 km (0.103 R)
• M4: 2,006,855 km (0.083 R)
• M5: 2,691,266 km (0.099 R)
• M6: 3,374,928 km (0.11 R)
• M7: 3,906,000 km (0.085 R)
• M8: 4,596,245 km (0.102 R)
• M9: 5,160,977 km (0.106 R)
• M10: 5,994,387 km (0.104 R)
• M11: 7,990,920 km (0.108 R)
• M12: 8,489,081 km (0.094 R)
• M13: 9,861,641 km (0.108 R)
• M14: 10,435,798 km (0.043 R)
• M15: 11,533,397 km (0.075 R)
• M16: 12,130,742 km (0.062 R)
• M17: 13,086,672 km (0.093 R)
• M18: 14,683,031 km (0.083 R)
• M19: 17,111,304 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 892.8

Radius: 13.9

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 2.88 AU - 3.44 AU

Year: 3572 Days

Day: 8.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 32,128,182 km

• M1: 179,368 km (0.098 R)
• M2: 711,487 km (0.106 R)
• M3: 1,344,286 km (0.088 R)
• M4: 2,044,405 km (0.07 R)
• M5: 2,655,661 km (0.091 R)
• M6: 3,983,492 km (0.094 R)
• M7: 5,577,906 km (0.093 R)
• M8: 6,814,183 km (0.097 R)
• M9: 7,632,483 km (0.1 R)
• M10: 8,225,789 km (0.119 R)
• M11: 12,126,852 km (0.117 R)
• M12: 14,929,269 km (0.106 R)
• M13: 16,027,317 km (0.075 R)
• M14: 16,827,516 km (0.097 R)
• M15: 17,355,896 km (0.107 R)
• M16: 18,445,866 km (0.057 R)
• M17: 19,904,595 km (0.105 R)
• M18: 23,266,658 km (0.119 R)
• M19: 24,292,899 km (0.114 R)
• M20: 25,044,329 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 460

Radius: 9.5

Gravity: 5.1 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.25 AU - 3.39 AU

Year: 3846 Days

Day: 13.5 Hours

Environment

Temp: -205 °C

Axial Tilt: 111.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 32,128,182 km

• M1: 118,482 km (0.116 R)
• M2: 423,362 km (0.117 R)
• M3: 1,001,408 km (0.118 R)
• M4: 2,796,433 km (0.037 R)
• M5: 5,406,317 km (0.118 R)
• M6: 6,495,390 km (0.084 R)
• M7: 7,061,319 km (0.051 R)
• M8: 8,223,545 km (0.054 R)
• M9: 8,567,919 km (0.118 R)
• M10: 9,659,235 km (0.027 R)
• M11: 10,718,388 km (0.031 R)
• M12: 11,171,520 km (0.082 R)
• M13: 12,607,809 km (0.114 R)
• M14: 15,269,006 km (0.056 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 108.7

Radius: 8.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 3.42 AU - 5.3 AU

Year: 5788 Days

Day: 8 Hours

Environment

Temp: -205 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 32,128,182 km

• M1: 110,702 km (0.107 R)
• M2: 575,204 km (0.108 R)
• M3: 1,032,824 km (0.11 R)
• M4: 1,753,885 km (0.081 R)
• M5: 2,054,876 km (0.099 R)
• M6: 2,629,482 km (0.1 R)
• M7: 4,526,233 km (0.086 R)
• M8: 5,402,428 km (0.12 R)
• M9: 6,072,477 km (0.083 R)
• M10: 7,399,111 km (0.091 R)
• M11: 8,513,914 km (0.105 R)
• M12: 10,804,108 km (0.113 R)
• M13: 12,152,433 km (0.056 R)
• M14: 12,739,156 km (0.109 R)
• M15: 13,654,246 km (0.057 R)
• M16: 14,059,657 km (0.091 R)
• M17: 15,036,830 km (0.058 R)
• M18: 17,544,838 km (0.097 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 531.1

Radius: 9.7

Gravity: 5.64 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.9 AU - 6.08 AU

Year: 8179 Days

Day: 5.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 32,128,182 km

• M1: 143,315 km (0.116 R)
• M2: 678,277 km (0.03 R)
• M3: 1,009,337 km (0.097 R)
• M4: 1,320,500 km (0.075 R)
• M5: 1,926,821 km (0.108 R)
• M6: 2,559,320 km (0.119 R)
• M7: 3,503,732 km (0.034 R)
• M8: 4,235,116 km (0.041 R)
• M9: 4,776,959 km (0.108 R)
• M10: 5,213,187 km (0.082 R)
• M11: 7,343,161 km (0.105 R)
• M12: 7,845,960 km (0.12 R)
• M13: 8,664,260 km (0.108 R)
• M14: 9,765,899 km (0.091 R)
• M15: 10,470,205 km (0.097 R)
• M16: 16,906,803 km (0.078 R)
• M17: 19,703,087 km (0.104 R)
• M18: 20,750,571 km (0.038 R)
• M19: 21,056,648 km (0.082 R)
• M20: 21,599,389 km (0.081 R)
• M21: 26,016,266 km (0.106 R)
• M22: 29,820,540 km (0.1 R)
• M23: 30,308,529 km (0.069 R)
• M24: 31,501,272 km (0.119 R)
• M25: 32,828,505 km (0.076 R)
• M26: 33,768,877 km (0.089 R)
• M27: 37,710,930 km (0.12 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 149.4

Radius: 7.6

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 5.87 AU - 8.11 AU

Year: 11750 Days

Day: 21.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 32,128,182 km

• M1: 97,388 km (0.083 R)
• M2: 1,342,491 km (0.107 R)
• M3: 1,770,341 km (0.057 R)
• M4: 2,786,260 km (0.069 R)
• M5: 4,546,878 km (0.108 R)
• M6: 6,248,254 km (0.115 R)
• M7: 7,545,866 km (0.044 R)
• M8: 14,890,523 km (0.119 R)
• M9: 16,250,966 km (0.111 R)
• M10: 22,449,704 km (0.106 R)
• M11: 25,283,536 km (0.101 R)
• M12: 29,511,920 km (0.118 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 539 - 14,529 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit