🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.78

Radius: 1.26

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.5 AU - 0.74 AU

Year: 310 Days

Day: 44.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 16.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.7

Radius: 14.1

Gravity: 3.79 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.73 AU - 0.85 AU

Year: 446 Days

Day: 5.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,681,849 km

• M1: 175,329 km (0.076 R)
• M2: 680,222 km (0.047 R)
• M3: 1,133,204 km (0.108 R)
• M4: 1,844,392 km (0.104 R)
• M5: 2,414,510 km (0.096 R)
• M6: 3,180,750 km (0.101 R)
• M7: 4,794,462 km (0.064 R)
• M8: 5,544,247 km (0.113 R)
• M9: 6,045,100 km (0.042 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 181.1

Radius: 8.1

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 3.34 AU - 3.44 AU

Year: 3969 Days

Day: 10.9 Hours

Environment

Temp: -202 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 49,681,849 km

• M1: 100,829 km (0.11 R)
• M2: 374,593 km (0.106 R)
• M3: 761,304 km (0.108 R)
• M4: 4,593,851 km (0.075 R)
• M5: 5,045,039 km (0.107 R)
• M6: 5,315,811 km (0.074 R)
• M7: 8,429,092 km (0.042 R)
• M8: 9,542,549 km (0.093 R)
• M9: 11,546,712 km (0.094 R)
• M10: 13,212,334 km (0.102 R)
• M11: 15,785,717 km (0.104 R)
• M12: 16,613,592 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588.4

Radius: 14.3

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 4.38 AU - 4.58 AU

Year: 6029 Days

Day: 7.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 49,681,849 km

• M1: 177,872 km (0.031 R)
• M2: 695,331 km (0.118 R)
• M3: 1,636,900 km (0.111 R)
• M4: 2,081,505 km (0.04 R)
• M5: 3,387,793 km (0.1 R)
• M6: 4,595,198 km (0.036 R)
• M7: 6,685,678 km (0.089 R)
• M8: 8,073,498 km (0.103 R)
• M9: 9,307,531 km (0.103 R)
• M10: 9,948,258 km (0.051 R)
• M11: 10,941,139 km (0.069 R)
• M12: 12,862,575 km (0.052 R)
• M13: 13,876,100 km (0.082 R)
• M14: 14,656,552 km (0.116 R)
• M15: 15,942,047 km (0.08 R)
• M16: 17,174,584 km (0.078 R)
• M17: 18,009,340 km (0.09 R)
• M18: 18,803,704 km (0.053 R)
• M19: 20,250,017 km (0.08 R)
• M20: 23,597,269 km (0.087 R)
• M21: 26,107,222 km (0.116 R)
• M22: 30,152,947 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 615.7

Radius: 9.1

Gravity: 7.44 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 5.2 AU - 5.98 AU

Year: 8403 Days

Day: 11.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 74.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 49,681,849 km

• M1: 113,096 km (0.105 R)
• M2: 532,868 km (0.119 R)
• M3: 1,034,469 km (0.119 R)
• M4: 1,562,849 km (0.08 R)
• M5: 1,889,571 km (0.046 R)
• M6: 2,439,193 km (0.052 R)
• M7: 2,923,741 km (0.108 R)
• M8: 3,660,510 km (0.037 R)
• M9: 4,378,281 km (0.086 R)
• M10: 4,799,698 km (0.1 R)
• M11: 6,947,924 km (0.118 R)
• M12: 7,522,529 km (0.085 R)
• M13: 8,211,577 km (0.087 R)
• M14: 8,766,435 km (0.089 R)
• M15: 10,190,757 km (0.088 R)
• M16: 13,087,121 km (0.097 R)
• M17: 13,375,097 km (0.08 R)
• M18: 15,255,392 km (0.096 R)
• M19: 16,358,228 km (0.083 R)
• M20: 22,106,975 km (0.109 R)
• M21: 22,433,547 km (0.092 R)
• M22: 23,180,340 km (0.078 R)
• M23: 24,029,308 km (0.102 R)
• M24: 25,341,580 km (0.111 R)
• M25: 30,663,524 km (0.052 R)
• M26: 31,893,668 km (0.118 R)
• M27: 34,016,312 km (0.119 R)
• M28: 34,671,102 km (0.068 R)
• M29: 38,306,031 km (0.088 R)
• M30: 39,014,676 km (0.073 R)
• M31: 39,973,149 km (0.096 R)
• M32: 40,336,672 km (0.091 R)
• M33: 40,702,289 km (0.09 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 453.8

Radius: 3.8

Gravity: 31.43 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 6.78 AU - 10.84 AU

Year: 16626 Days

Day: 23.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 49,681,849 km

• M1: 49,816 km (0.111 R)
• M2: 291,865 km (0.101 R)
• M3: 509,082 km (0.117 R)
• M4: 714,779 km (0.105 R)
• M5: 2,211,057 km (0.1 R)
• M6: 5,825,491 km (0.097 R)
• M7: 9,223,008 km (0.102 R)
• M8: 11,838,727 km (0.097 R)
• M9: 13,611,013 km (0.041 R)
• M10: 15,552,494 km (0.096 R)
• M11: 16,065,166 km (0.067 R)
• M12: 22,469,750 km (0.12 R)
• M13: 24,965,940 km (0.075 R)
• M14: 28,937,614 km (0.029 R)
• M15: 32,473,958 km (0.069 R)
• M16: 35,151,161 km (0.095 R)
• M17: 36,929,282 km (0.111 R)
• M18: 44,495,792 km (0.1 R)
• M19: 45,527,120 km (0.076 R)
• M20: 49,028,009 km (0.09 R)
• M21: 51,405,269 km (0.115 R)
• M22: 56,731,402 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 242.3

Radius: 6.6

Gravity: 5.56 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 7.06 AU - 11.34 AU

Year: 17743 Days

Day: 24.4 Hours

Environment

Temp: -231 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 49,681,849 km

• M1: 82,129 km (0.072 R)
• M2: 361,877 km (0.078 R)
• M3: 802,593 km (0.118 R)
• M4: 1,559,707 km (0.049 R)
• M5: 2,846,847 km (0.073 R)
• M6: 3,162,200 km (0.091 R)
• M7: 3,601,569 km (0.113 R)
• M8: 4,221,353 km (0.064 R)
• M9: 4,909,952 km (0.079 R)
• M10: 5,397,790 km (0.112 R)
• M11: 5,636,249 km (0.066 R)
• M12: 5,846,285 km (0.06 R)
• M13: 6,394,262 km (0.075 R)
• M14: 7,466,280 km (0.066 R)
• M15: 8,792,615 km (0.1 R)
• M16: 10,217,086 km (0.105 R)
• M17: 12,902,368 km (0.113 R)
• M18: 13,206,650 km (0.039 R)
• M19: 14,406,724 km (0.041 R)
• M20: 15,815,786 km (0.057 R)
• M21: 16,877,033 km (0.119 R)
• M22: 17,834,310 km (0.074 R)
• M23: 21,941,220 km (0.109 R)
• M24: 22,550,084 km (0.096 R)
• M25: 32,406,938 km (0.11 R)
• M26: 36,603,158 km (0.094 R)
• M27: 38,579,047 km (0.089 R)
• M28: 41,410,486 km (0.086 R)
• M29: 41,939,763 km (0.079 R)
• M30: 42,876,844 km (0.082 R)
• M31: 43,964,720 km (0.089 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 353 - 13,530 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit