🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.81

Radius: 0.92

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.5 AU - 0.56 AU

Year: 245 Days

Day: 20.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 31.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 757.7

Radius: 12.6

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.87 AU - 0.99 AU

Year: 570 Days

Day: 8.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 33,946,779 km

• M1: 157,377 km (0.092 R)
• M2: 685,457 km (0.094 R)
• M3: 1,244,953 km (0.119 R)
• M4: 1,647,970 km (0.083 R)
• M5: 2,067,443 km (0.116 R)
• M6: 2,861,807 km (0.062 R)
• M7: 3,567,460 km (0.056 R)
• M8: 4,192,630 km (0.082 R)
• M9: 4,712,333 km (0.112 R)
• M10: 5,155,591 km (0.074 R)
• M11: 5,662,728 km (0.038 R)
• M12: 6,107,483 km (0.111 R)
• M13: 6,736,841 km (0.063 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.9

Radius: 11.8

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.82 AU - 1.36 AU

Year: 724 Days

Day: 8.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 153.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,946,779 km

• M1: 147,055 km (0.071 R)
• M2: 538,552 km (0.115 R)
• M3: 1,141,881 km (0.113 R)
• M4: 1,533,528 km (0.051 R)
• M5: 1,989,951 km (0.055 R)
• M6: 2,444,280 km (0.103 R)
• M7: 3,331,844 km (0.065 R)
• M8: 3,726,333 km (0.12 R)
• M9: 4,226,140 km (0.115 R)
• M10: 4,610,158 km (0.09 R)
• M11: 5,756,825 km (0.116 R)
• M12: 6,729,959 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 902.5

Radius: 12.2

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.36 AU - 1.44 AU

Year: 1053 Days

Day: 11.8 Hours

Environment

Temp: -172 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 33,946,779 km

• M1: 151,692 km (0.115 R)
• M2: 559,945 km (0.044 R)
• M3: 984,504 km (0.081 R)
• M4: 1,391,410 km (0.082 R)
• M5: 2,129,226 km (0.098 R)
• M6: 2,527,456 km (0.079 R)
• M7: 3,270,209 km (0.106 R)
• M8: 3,662,006 km (0.089 R)
• M9: 4,187,843 km (0.079 R)
• M10: 4,596,395 km (0.117 R)
• M11: 5,249,688 km (0.065 R)
• M12: 5,964,018 km (0.105 R)
• M13: 7,280,779 km (0.102 R)
• M14: 7,742,737 km (0.108 R)
• M15: 8,142,762 km (0.112 R)
• M16: 10,226,959 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 57.1

Radius: 10.9

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 2.8 AU - 2.96 AU

Year: 3108 Days

Day: 13.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,946,779 km

• M1: 145,559 km (0.087 R)
• M2: 514,467 km (0.116 R)
• M3: 872,904 km (0.114 R)
• M4: 1,249,741 km (0.082 R)
• M5: 2,181,287 km (0.107 R)
• M6: 2,736,444 km (0.069 R)
• M7: 3,804,723 km (0.074 R)
• M8: 4,227,785 km (0.111 R)
• M9: 7,272,551 km (0.077 R)
• M10: 8,077,537 km (0.08 R)
• M11: 8,833,006 km (0.1 R)
• M12: 9,436,933 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.8

Radius: 13.9

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.58 AU - 4.1 AU

Year: 3881 Days

Day: 12.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 33,946,779 km

• M1: 237,113 km (0.11 R)
• M2: 1,069,475 km (0.084 R)
• M3: 1,908,570 km (0.116 R)
• M4: 3,172,073 km (0.107 R)
• M5: 3,680,407 km (0.075 R)
• M6: 5,082,887 km (0.069 R)
• M7: 5,569,230 km (0.034 R)
• M8: 6,606,691 km (0.103 R)
• M9: 9,323,986 km (0.094 R)
• M10: 10,056,268 km (0.114 R)
• M11: 11,035,835 km (0.051 R)
• M12: 12,077,934 km (0.081 R)
• M13: 12,762,045 km (0.117 R)
• M14: 17,251,477 km (0.1 R)
• M15: 22,561,902 km (0.065 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 257.5

Radius: 6.2

Gravity: 6.7 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 4.95 AU - 7.37 AU

Year: 9721 Days

Day: 21.7 Hours

Environment

Temp: -214 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 33,946,779 km

• M1: 81,082 km (0.074 R)
• M2: 284,685 km (0.11 R)
• M3: 511,026 km (0.085 R)
• M4: 721,810 km (0.107 R)
• M5: 964,457 km (0.086 R)
• M6: 1,431,951 km (0.04 R)
• M7: 2,086,292 km (0.09 R)
• M8: 2,310,390 km (0.118 R)
• M9: 3,102,211 km (0.052 R)
• M10: 5,148,112 km (0.077 R)
• M11: 5,620,392 km (0.096 R)
• M12: 6,250,947 km (0.085 R)
• M13: 6,617,312 km (0.029 R)
• M14: 7,429,629 km (0.075 R)
• M15: 11,107,193 km (0.051 R)
• M16: 12,561,584 km (0.073 R)
• M17: 14,769,648 km (0.097 R)
• M18: 17,548,728 km (0.102 R)
• M19: 18,076,808 km (0.118 R)
• M20: 19,795,389 km (0.079 R)
• M21: 20,367,600 km (0.12 R)
• M22: 21,620,183 km (0.106 R)
• M23: 23,001,271 km (0.109 R)
• M24: 24,522,083 km (0.075 R)
• M25: 25,853,504 km (0.083 R)
• M26: 26,193,839 km (0.112 R)
• M27: 27,673,512 km (0.071 R)
• M28: 28,933,126 km (0.079 R)
• M29: 32,052,690 km (0.092 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 371 - 11,467 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit