🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.76

Radius: 1.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.6 AU - 0.72 AU

Year: 341 Days

Day: 16.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 24.3 °

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: 238.9

Radius: 9.6

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.56 AU - 0.86 AU

Year: 380 Days

Day: 13.6 Hours

Environment

Temp: -148 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 43,263,177 km

• M1: 120,277 km (0.05 R)
• M2: 469,887 km (0.12 R)
• M3: 800,349 km (0.049 R)
• M4: 1,191,846 km (0.056 R)
• M5: 1,539,811 km (0.032 R)
• M6: 1,914,404 km (0.052 R)
• M7: 2,357,812 km (0.039 R)
• M8: 2,814,235 km (0.05 R)
• M9: 3,514,204 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 11.7

Radius: 13.7

Gravity: 0.06 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.65 AU - 1.01 AU

Year: 481 Days

Day: 11 Hours

Environment

Temp: -144 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (2)

Outer Limit: 43,263,177 km

• M1: 170,392 km (0.114 R)
• M2: 729,738 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.6

Radius: 13.9

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.83 AU - 0.95 AU

Year: 534 Days

Day: 5 Hours

Environment

Temp: -157 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 43,263,177 km

• M1: 172,935 km (0.109 R)
• M2: 651,648 km (0.058 R)
• M3: 1,202,767 km (0.113 R)
• M4: 1,829,432 km (0.114 R)
• M5: 2,412,415 km (0.118 R)
• M6: 2,963,085 km (0.115 R)
• M7: 3,525,872 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454

Radius: 12.5

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.88 AU - 1.32 AU

Year: 734 Days

Day: 12.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 43,263,177 km

• M1: 155,432 km (0.088 R)
• M2: 787,034 km (0.101 R)
• M3: 1,210,546 km (0.078 R)
• M4: 1,688,212 km (0.057 R)
• M5: 2,169,618 km (0.093 R)
• M6: 3,453,317 km (0.061 R)
• M7: 4,328,465 km (0.093 R)
• M8: 5,023,496 km (0.1 R)
• M9: 5,902,384 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 705.4

Radius: 13.9

Gravity: 3.65 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 1.04 AU - 1.4 AU

Year: 857 Days

Day: 11 Hours

Environment

Temp: -173 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,263,177 km

• M1: 172,935 km (0.118 R)
• M2: 610,958 km (0.089 R)
• M3: 1,131,558 km (0.101 R)
• M4: 2,059,813 km (0.074 R)
• M5: 3,012,901 km (0.103 R)
• M6: 3,450,176 km (0.09 R)
• M7: 4,521,446 km (0.101 R)
• M8: 5,491,289 km (0.079 R)
• M9: 5,964,916 km (0.04 R)
• M10: 7,528,962 km (0.11 R)
• M11: 8,997,863 km (0.098 R)

Asteroid Belt

Center: 4.24 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 7.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 762

Radius: 5.4

Gravity: 26.13 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 5.55 AU - 8.95 AU

Year: 12412 Days

Day: 16 Hours

Environment

Temp: -216 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 43,263,177 km

• M1: 69,563 km (0.062 R)
• M2: 338,839 km (0.114 R)
• M3: 597,793 km (0.11 R)
• M4: 920,027 km (0.078 R)
• M5: 1,194,838 km (0.064 R)
• M6: 1,583,344 km (0.059 R)
• M7: 1,840,951 km (0.082 R)
• M8: 2,853,131 km (0.102 R)
• M9: 3,064,363 km (0.112 R)
• M10: 3,518,243 km (0.118 R)
• M11: 3,733,963 km (0.038 R)
• M12: 4,718,466 km (0.104 R)
• M13: 5,535,420 km (0.054 R)
• M14: 6,091,775 km (0.086 R)
• M15: 6,603,400 km (0.093 R)
• M16: 7,445,935 km (0.117 R)
• M17: 8,030,563 km (0.085 R)
• M18: 9,808,833 km (0.065 R)
• M19: 16,241,242 km (0.073 R)
• M20: 18,644,233 km (0.058 R)
• M21: 20,573,148 km (0.101 R)
• M22: 21,362,875 km (0.049 R)
• M23: 23,757,638 km (0.091 R)
• M24: 24,334,786 km (0.083 R)
• M25: 25,616,840 km (0.03 R)
• M26: 27,465,571 km (0.105 R)
• M27: 29,511,621 km (0.106 R)
• M28: 31,541,664 km (0.095 R)
• M29: 33,783,388 km (0.076 R)
• M30: 34,881,436 km (0.118 R)
• M31: 40,185,728 km (0.073 R)
• M32: 40,457,398 km (0.065 R)
• M33: 52,681,638 km (0.064 R)
• M34: 54,821,037 km (0.066 R)
• M35: 55,996,727 km (0.082 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 189.2

Radius: 6.5

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 7.77 AU - 9.63 AU

Year: 16316 Days

Day: 22 Hours

Environment

Temp: -228 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 43,263,177 km

• M1: 80,932 km (0.081 R)
• M2: 336,894 km (0.062 R)
• M3: 998,566 km (0.114 R)
• M4: 1,430,604 km (0.073 R)
• M5: 2,394,613 km (0.059 R)
• M6: 5,130,160 km (0.118 R)
• M7: 6,222,972 km (0.069 R)
• M8: 7,148,385 km (0.082 R)
• M9: 7,910,735 km (0.098 R)
• M10: 8,120,023 km (0.073 R)
• M11: 8,726,044 km (0.106 R)
• M12: 8,994,722 km (0.104 R)
• M13: 9,501,858 km (0.074 R)
• M14: 9,834,265 km (0.04 R)
• M15: 10,372,368 km (0.116 R)
• M16: 11,614,479 km (0.118 R)
• M17: 12,049,660 km (0.118 R)
• M18: 13,420,575 km (0.107 R)
• M19: 14,639,947 km (0.058 R)
• M20: 17,508,486 km (0.053 R)
• M21: 22,107,424 km (0.116 R)
• M22: 24,861,221 km (0.099 R)
• M23: 26,413,449 km (0.111 R)
• M24: 40,723,682 km (0.09 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 260 - 19,341 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit