🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.53 AU - 0.55 AU

Year: 256 Days

Day: 33.5 Hours

Environment

Temp: -123 °C

Axial Tilt: 10.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.57

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.49 AU - 0.69 AU

Year: 293 Days

Day: 21.9 Hours

Environment

Temp: -119 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 52,186,805 km

• M1: 232,924 km (0.105 R)
• M2: 483,500 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 208.5

Radius: 9

Gravity: 2.57 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.02 AU - 1.08 AU

Year: 695 Days

Day: 13.8 Hours

Environment

Temp: -170 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,186,805 km

• M1: 144,063 km (0.082 R)
• M2: 594,951 km (0.119 R)
• M3: 888,611 km (0.069 R)
• M4: 1,989,951 km (0.03 R)
• M5: 3,366,401 km (0.099 R)
• M6: 4,054,701 km (0.091 R)
• M7: 5,337,502 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.3

Radius: 14.6

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.01 AU - 1.21 AU

Year: 755 Days

Day: 7.4 Hours

Environment

Temp: -172 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,186,805 km

• M1: 181,612 km (0.085 R)
• M2: 804,986 km (0.12 R)
• M3: 1,366,277 km (0.082 R)
• M4: 1,971,102 km (0.115 R)
• M5: 2,625,592 km (0.093 R)
• M6: 3,107,597 km (0.04 R)
• M7: 3,759,993 km (0.061 R)
• M8: 4,226,888 km (0.104 R)
• M9: 4,909,952 km (0.027 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 685.2

Radius: 13.8

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.03 AU - 1.43 AU

Year: 881 Days

Day: 11.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,186,805 km

• M1: 172,038 km (0.093 R)
• M2: 813,812 km (0.099 R)
• M3: 1,343,389 km (0.079 R)
• M4: 1,843,345 km (0.107 R)
• M5: 2,435,603 km (0.069 R)
• M6: 3,422,799 km (0.074 R)
• M7: 3,886,702 km (0.082 R)
• M8: 4,525,934 km (0.082 R)
• M9: 5,032,622 km (0.037 R)
• M10: 5,480,368 km (0.114 R)
• M11: 6,016,228 km (0.118 R)
• M12: 6,896,911 km (0.108 R)
• M13: 8,185,995 km (0.069 R)
• M14: 8,755,215 km (0.1 R)
• M15: 9,461,916 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 806.7

Radius: 14.7

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.26 AU - 1.42 AU

Year: 1002 Days

Day: 9 Hours

Environment

Temp: -164 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,186,805 km

• M1: 182,809 km (0.111 R)
• M2: 671,246 km (0.115 R)
• M3: 1,213,987 km (0.111 R)
• M4: 2,037,673 km (0.09 R)
• M5: 2,631,127 km (0.094 R)
• M6: 3,454,664 km (0.104 R)
• M7: 3,992,169 km (0.115 R)
• M8: 4,969,492 km (0.091 R)
• M9: 6,659,050 km (0.098 R)
• M10: 7,251,009 km (0.093 R)
• M11: 8,984,848 km (0.06 R)
• M12: 10,070,480 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 920.5

Radius: 8

Gravity: 14.38 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 2 AU - 2.02 AU

Year: 1840 Days

Day: 13.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 52,186,805 km

• M1: 102,475 km (0.076 R)
• M2: 480,957 km (0.053 R)
• M3: 933,491 km (0.104 R)
• M4: 1,368,821 km (0.12 R)
• M5: 1,733,839 km (0.112 R)
• M6: 2,004,462 km (0.113 R)
• M7: 2,303,508 km (0.072 R)
• M8: 3,367,448 km (0.101 R)
• M9: 3,719,153 km (0.096 R)
• M10: 4,252,768 km (0.049 R)
• M11: 4,558,995 km (0.099 R)
• M12: 4,858,191 km (0.068 R)
• M13: 5,959,530 km (0.12 R)
• M14: 6,555,528 km (0.117 R)
• M15: 9,410,753 km (0.107 R)
• M16: 10,218,582 km (0.103 R)
• M17: 13,960,473 km (0.095 R)
• M18: 14,364,986 km (0.119 R)
• M19: 15,482,183 km (0.091 R)
• M20: 16,706,342 km (0.1 R)
• M21: 17,060,291 km (0.054 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120

Radius: 10.5

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 1.63 AU - 2.39 AU

Year: 1840 Days

Day: 13.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,186,805 km

• M1: 130,749 km (0.117 R)
• M2: 745,745 km (0.041 R)
• M3: 1,948,961 km (0.072 R)
• M4: 3,496,252 km (0.093 R)
• M5: 3,896,725 km (0.099 R)
• M6: 5,250,137 km (0.1 R)
• M7: 6,134,859 km (0.063 R)
• M8: 6,506,909 km (0.114 R)
• M9: 7,786,270 km (0.081 R)
• M10: 8,523,488 km (0.061 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.3

Radius: 10.4

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 5.15 AU - 5.47 AU

Year: 7901 Days

Day: 7.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 52,186,805 km

• M1: 129,552 km (0.045 R)
• M2: 546,780 km (0.08 R)
• M3: 896,839 km (0.12 R)
• M4: 1,682,976 km (0.089 R)
• M5: 2,016,729 km (0.11 R)
• M6: 3,073,039 km (0.05 R)
• M7: 3,403,651 km (0.091 R)
• M8: 4,211,330 km (0.107 R)
• M9: 5,057,006 km (0.073 R)
• M10: 5,762,809 km (0.073 R)
• M11: 6,804,459 km (0.114 R)
• M12: 8,881,326 km (0.117 R)
• M13: 9,385,322 km (0.085 R)
• M14: 9,952,746 km (0.091 R)
• M15: 10,682,335 km (0.11 R)
• M16: 11,693,617 km (0.055 R)
• M17: 15,110,731 km (0.072 R)
• M18: 16,634,236 km (0.109 R)
• M19: 22,120,140 km (0.077 R)
• M20: 22,580,452 km (0.106 R)
• M21: 23,204,126 km (0.072 R)
• M22: 25,393,790 km (0.089 R)
• M23: 30,841,845 km (0.119 R)
• M24: 31,998,237 km (0.113 R)

Planet 10 - Ice Giant

Semi-Major Axis: 11.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 153.8

Radius: 4.8

Gravity: 6.68 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 9.12 AU - 13.14 AU

Year: 23975 Days

Day: 23.2 Hours

Environment

Temp: -237 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 52,186,805 km

• M1: 61,634 km (0.091 R)
• M2: 411,544 km (0.065 R)
• M3: 577,747 km (0.067 R)
• M4: 1,108,670 km (0.1 R)
• M5: 1,357,451 km (0.071 R)
• M6: 2,072,529 km (0.09 R)
• M7: 2,942,590 km (0.094 R)
• M8: 3,346,056 km (0.114 R)
• M9: 6,693,607 km (0.11 R)
• M10: 8,405,456 km (0.033 R)
• M11: 12,363,217 km (0.096 R)
• M12: 12,847,166 km (0.029 R)
• M13: 13,218,468 km (0.108 R)
• M14: 19,033,636 km (0.054 R)
• M15: 23,396,808 km (0.084 R)
• M16: 24,701,750 km (0.081 R)
• M17: 25,468,738 km (0.104 R)
• M18: 29,757,709 km (0.098 R)
• M19: 37,180,606 km (0.087 R)
• M20: 45,747,478 km (0.099 R)
• M21: 47,194,687 km (0.067 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 393 - 14,141 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit