🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.43 AU - 0.61 AU

Year: 246 Days

Day: 23.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 39.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 326.9

Radius: 14.7

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.63 AU - 0.79 AU

Year: 392 Days

Day: 10.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 17,430,155 km

• M1: 182,809 km (0.091 R)
• M2: 785,688 km (0.093 R)
• M3: 1,428,959 km (0.058 R)
• M4: 2,171,712 km (0.059 R)
• M5: 2,882,901 km (0.099 R)
• M6: 3,558,485 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 325.5

Radius: 13.2

Gravity: 1.87 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.73 AU - 1.01 AU

Year: 532 Days

Day: 15 Hours

Environment

Temp: -157 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 17,430,155 km

• M1: 164,109 km (0.031 R)
• M2: 589,266 km (0.118 R)
• M3: 1,222,963 km (0.086 R)
• M4: 1,720,675 km (0.078 R)
• M5: 2,469,412 km (0.118 R)
• M6: 2,940,645 km (0.071 R)
• M7: 3,541,580 km (0.102 R)
• M8: 4,370,053 km (0.09 R)
• M9: 4,787,581 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731.8

Radius: 8.9

Gravity: 9.24 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.79 AU - 1.05 AU

Year: 579 Days

Day: 10.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 17,430,155 km

• M1: 110,702 km (0.101 R)
• M2: 439,219 km (0.031 R)
• M3: 742,753 km (0.101 R)
• M4: 1,029,832 km (0.05 R)
• M5: 1,392,607 km (0.059 R)
• M6: 2,012,839 km (0.085 R)
• M7: 2,321,909 km (0.089 R)
• M8: 2,840,116 km (0.045 R)
• M9: 3,739,498 km (0.039 R)
• M10: 4,736,418 km (0.118 R)
• M11: 5,305,638 km (0.095 R)
• M12: 6,640,949 km (0.093 R)
• M13: 7,118,166 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 683.5

Radius: 14.2

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.95 AU - 1.45 AU

Year: 862 Days

Day: 5.9 Hours

Environment

Temp: -173 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 17,430,155 km

• M1: 176,525 km (0.117 R)
• M2: 716,574 km (0.074 R)
• M3: 1,302,698 km (0.075 R)
• M4: 2,147,926 km (0.065 R)
• M5: 2,742,428 km (0.059 R)
• M6: 3,848,555 km (0.11 R)
• M7: 4,630,652 km (0.102 R)
• M8: 5,105,626 km (0.107 R)
• M9: 5,574,465 km (0.078 R)
• M10: 6,133,812 km (0.113 R)
• M11: 6,930,421 km (0.111 R)
• M12: 7,746,627 km (0.107 R)
• M13: 8,862,627 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 556.7

Radius: 12

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 1.21 AU - 1.37 AU

Year: 961 Days

Day: 6.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 17,430,155 km

• M1: 149,299 km (0.094 R)
• M2: 990,936 km (0.1 R)
• M3: 1,432,998 km (0.108 R)
• M4: 2,547,951 km (0.097 R)
• M5: 2,977,297 km (0.107 R)
• M6: 4,092,848 km (0.093 R)
• M7: 5,942,626 km (0.073 R)
• M8: 6,379,601 km (0.111 R)
• M9: 7,271,504 km (0.115 R)
• M10: 8,219,505 km (0.087 R)
• M11: 8,657,678 km (0.087 R)
• M12: 9,111,558 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.3

Radius: 14.8

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.11 AU - 1.63 AU

Year: 1052 Days

Day: 9 Hours

Environment

Temp: -173 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 17,430,155 km

• M1: 184,454 km (0.057 R)
• M2: 668,553 km (0.106 R)
• M3: 1,306,438 km (0.025 R)
• M4: 2,123,542 km (0.09 R)
• M5: 2,753,199 km (0.096 R)
• M6: 3,491,614 km (0.042 R)
• M7: 4,258,154 km (0.081 R)
• M8: 4,946,603 km (0.105 R)
• M9: 6,822,112 km (0.087 R)
• M10: 7,394,174 km (0.116 R)
• M11: 7,869,746 km (0.046 R)
• M12: 8,553,707 km (0.116 R)
• M13: 9,624,529 km (0.111 R)
• M14: 10,625,488 km (0.087 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 693.6

Radius: 11.9

Gravity: 4.9 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.42 AU - 1.58 AU

Year: 1205 Days

Day: 9 Hours

Environment

Temp: -187 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 17,430,155 km

• M1: 148,551 km (0.06 R)
• M2: 595,699 km (0.108 R)
• M3: 1,069,924 km (0.114 R)
• M4: 1,495,530 km (0.051 R)
• M5: 2,162,587 km (0.086 R)
• M6: 2,615,270 km (0.052 R)
• M7: 3,376,723 km (0.102 R)
• M8: 4,074,448 km (0.082 R)
• M9: 5,843,442 km (0.098 R)
• M10: 6,754,344 km (0.078 R)
• M11: 7,836,535 km (0.053 R)
• M12: 8,212,923 km (0.108 R)
• M13: 9,964,714 km (0.069 R)

Planet 9 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 319.3

Radius: 12.8

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 1.96 AU - 1.98 AU

Year: 1814 Days

Day: 6.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 17,430,155 km

• M1: 160,519 km (0.033 R)
• M2: 740,061 km (0.07 R)
• M3: 1,466,807 km (0.037 R)
• M4: 2,050,837 km (0.098 R)
• M5: 2,597,019 km (0.057 R)
• M6: 3,312,097 km (0.116 R)
• M7: 3,837,485 km (0.061 R)
• M8: 4,730,135 km (0.098 R)
• M9: 8,386,756 km (0.106 R)
• M10: 8,810,716 km (0.061 R)
• M11: 9,549,430 km (0.11 R)
• M12: 10,296,971 km (0.116 R)
• M13: 10,916,157 km (0.08 R)

Planet 10 - Gas Giant

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.2

Radius: 8.9

Gravity: 5.76 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 1.96 AU - 3.16 AU

Year: 2687 Days

Day: 5.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 53.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 17,430,155 km

• M1: 111,002 km (0.091 R)
• M2: 391,198 km (0.1 R)
• M3: 738,714 km (0.12 R)
• M4: 1,106,725 km (0.04 R)
• M5: 1,468,602 km (0.083 R)
• M6: 1,763,759 km (0.049 R)
• M7: 2,098,858 km (0.06 R)
• M8: 2,883,649 km (0.116 R)
• M9: 3,704,043 km (0.068 R)
• M10: 4,545,232 km (0.085 R)
• M11: 4,933,139 km (0.068 R)
• M12: 5,460,921 km (0.059 R)
• M13: 6,987,717 km (0.097 R)
• M14: 7,653,577 km (0.093 R)
• M15: 9,871,215 km (0.096 R)
• M16: 11,554,940 km (0.045 R)
• M17: 12,197,313 km (0.031 R)
• M18: 13,076,200 km (0.092 R)
• M19: 13,729,494 km (0.101 R)
• M20: 15,006,910 km (0.093 R)
• M21: 16,015,649 km (0.039 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 162 - 19,685 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit