🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.48 AU - 0.64 AU

Year: 271 Days

Day: 21.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 206.2

Radius: 14.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.62 AU - 0.94 AU

Year: 445 Days

Day: 13.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 50,403,480 km

• M1: 175,329 km (0.119 R)
• M2: 681,119 km (0.119 R)
• M3: 1,181,823 km (0.025 R)
• M4: 1,707,061 km (0.097 R)
• M5: 2,217,788 km (0.096 R)
• M6: 2,950,070 km (0.044 R)
• M7: 3,761,638 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.3

Radius: 9.5

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.91 AU - 0.95 AU

Year: 579 Days

Day: 12.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 50,403,480 km

• M1: 118,182 km (0.092 R)
• M2: 526,585 km (0.119 R)
• M3: 837,898 km (0.09 R)
• M4: 1,215,782 km (0.056 R)
• M5: 1,918,892 km (0.047 R)
• M6: 2,524,314 km (0.119 R)
• M7: 3,153,822 km (0.065 R)
• M8: 3,617,576 km (0.071 R)
• M9: 4,036,151 km (0.075 R)
• M10: 4,868,214 km (0.044 R)

Asteroid Belt

Center: 1.2 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 393.6

Radius: 8.6

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.31 AU - 1.63 AU

Year: 1151 Days

Day: 10 Hours

Environment

Temp: -182 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 50,403,480 km

• M1: 106,962 km (0.079 R)
• M2: 457,321 km (0.065 R)
• M3: 895,493 km (0.093 R)
• M4: 1,237,474 km (0.094 R)
• M5: 1,805,945 km (0.113 R)
• M6: 2,285,706 km (0.1 R)
• M7: 3,142,453 km (0.099 R)
• M8: 3,514,054 km (0.084 R)
• M9: 3,914,677 km (0.037 R)
• M10: 4,755,118 km (0.113 R)
• M11: 5,871,716 km (0.112 R)
• M12: 6,394,112 km (0.118 R)
• M13: 7,412,574 km (0.119 R)
• M14: 8,225,340 km (0.107 R)
• M15: 8,933,536 km (0.082 R)
• M16: 9,372,157 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377

Radius: 10.6

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.18 AU - 1.94 AU

Year: 1258 Days

Day: 7.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,403,480 km

• M1: 131,945 km (0.034 R)
• M2: 501,003 km (0.117 R)
• M3: 1,012,628 km (0.111 R)
• M4: 2,916,710 km (0.116 R)
• M5: 3,570,602 km (0.06 R)
• M6: 5,207,951 km (0.056 R)
• M7: 5,756,227 km (0.11 R)
• M8: 7,488,720 km (0.05 R)
• M9: 8,085,615 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 25.5

Radius: 13.3

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.24 AU - 1.9 AU

Year: 1270 Days

Day: 7.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 50,403,480 km

• M1: 165,455 km (0.09 R)
• M2: 658,979 km (0.069 R)
• M3: 1,250,339 km (0.109 R)
• M4: 1,861,297 km (0.068 R)
• M5: 3,175,963 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 398.6

Radius: 13.8

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.68 AU - 1.86 AU

Year: 1520 Days

Day: 9.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 50,403,480 km

• M1: 171,589 km (0.102 R)
• M2: 636,689 km (0.113 R)
• M3: 1,083,089 km (0.118 R)
• M4: 1,517,072 km (0.111 R)
• M5: 2,101,551 km (0.088 R)
• M6: 2,560,667 km (0.063 R)
• M7: 3,355,929 km (0.115 R)
• M8: 4,327,717 km (0.08 R)
• M9: 4,889,606 km (0.103 R)
• M10: 5,644,776 km (0.117 R)
• M11: 6,385,136 km (0.118 R)
• M12: 7,954,568 km (0.101 R)
• M13: 8,801,292 km (0.117 R)
• M14: 9,290,776 km (0.075 R)
• M15: 9,889,915 km (0.093 R)
• M16: 11,198,897 km (0.047 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119.5

Radius: 12.1

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.1 AU - 2.2 AU

Year: 2036 Days

Day: 13 Hours

Environment

Temp: -198 °C

Axial Tilt: 177.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 50,403,480 km

• M1: 150,495 km (0.089 R)
• M2: 608,564 km (0.106 R)
• M3: 1,177,784 km (0.049 R)
• M4: 1,794,875 km (0.106 R)
• M5: 2,209,710 km (0.116 R)
• M6: 2,642,796 km (0.101 R)
• M7: 3,106,699 km (0.118 R)
• M8: 3,567,610 km (0.111 R)
• M9: 4,611,654 km (0.117 R)
• M10: 6,051,383 km (0.095 R)
• M11: 6,841,410 km (0.093 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 44.8

Radius: 10.6

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 2.35 AU - 2.61 AU

Year: 2522 Days

Day: 11.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,403,480 km

• M1: 133,292 km (0.116 R)
• M2: 537,804 km (0.094 R)
• M3: 964,457 km (0.104 R)
• M4: 1,378,694 km (0.11 R)
• M5: 2,174,405 km (0.039 R)
• M6: 2,556,328 km (0.1 R)
• M7: 3,910,040 km (0.078 R)
• M8: 5,383,429 km (0.047 R)
• M9: 6,031,487 km (0.065 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 196.3

Radius: 5.6

Gravity: 6.26 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 9.54 AU - 10.28 AU

Year: 20143 Days

Day: 23 Hours

Environment

Temp: -234 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 50,403,480 km

• M1: 78,090 km (0.111 R)
• M2: 308,321 km (0.071 R)
• M3: 620,382 km (0.101 R)
• M4: 809,923 km (0.112 R)
• M5: 1,247,197 km (0.077 R)
• M6: 1,703,621 km (0.088 R)
• M7: 1,945,072 km (0.069 R)
• M8: 2,745,271 km (0.11 R)
• M9: 2,964,431 km (0.044 R)
• M10: 3,538,738 km (0.12 R)
• M11: 3,960,903 km (0.119 R)
• M12: 4,505,140 km (0.051 R)
• M13: 5,705,962 km (0.118 R)
• M14: 8,039,539 km (0.1 R)
• M15: 8,909,002 km (0.027 R)
• M16: 11,550,751 km (0.098 R)
• M17: 12,240,547 km (0.115 R)
• M18: 14,084,789 km (0.11 R)
• M19: 18,700,482 km (0.07 R)
• M20: 22,515,676 km (0.101 R)
• M21: 23,499,282 km (0.065 R)
• M22: 26,034,368 km (0.098 R)
• M23: 29,373,093 km (0.116 R)
• M24: 33,558,692 km (0.105 R)
• M25: 39,136,299 km (0.116 R)
• M26: 41,212,568 km (0.089 R)
• M27: 49,502,833 km (0.055 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 452 - 13,907 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit