🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.62

Radius: 1.21

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.5 AU - 0.68 AU

Year: 297 Days

Day: 15.9 Hours

Environment

Temp: -137 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.14

Radius: 0.46

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.56 AU - 0.66 AU

Year: 313 Days

Day: 17.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 43 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 31,417,180 km

• M1: 255,064 km (0.085 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.04

Radius: 1.02

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.55 AU - 0.67 AU

Year: 313 Days

Day: 21 Hours

Environment

Temp: -133 °C

Axial Tilt: 57.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 496.2

Radius: 12.7

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.73 AU - 0.79 AU

Year: 435 Days

Day: 13 Hours

Environment

Temp: -144 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,417,180 km

• M1: 159,023 km (0.09 R)
• M2: 591,809 km (0.042 R)
• M3: 1,341,594 km (0.114 R)
• M4: 1,774,380 km (0.092 R)
• M5: 2,208,214 km (0.092 R)
• M6: 2,963,534 km (0.095 R)
• M7: 3,652,881 km (0.108 R)
• M8: 4,351,652 km (0.106 R)
• M9: 4,856,096 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 149.7

Radius: 8.8

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.85 AU - 0.99 AU

Year: 579 Days

Day: 12.4 Hours

Environment

Temp: -148 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 31,417,180 km

• M1: 109,506 km (0.052 R)
• M2: 432,637 km (0.053 R)
• M3: 768,783 km (0.118 R)
• M4: 1,282,054 km (0.103 R)
• M5: 1,727,556 km (0.084 R)
• M6: 2,614,372 km (0.102 R)
• M7: 3,367,298 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 787.1

Radius: 10

Gravity: 7.87 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 3.49 AU - 4.05 AU

Year: 4802 Days

Day: 7.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 31,417,180 km

• M1: 124,465 km (0.1 R)
• M2: 483,052 km (0.063 R)
• M3: 935,735 km (0.118 R)
• M4: 1,350,869 km (0.104 R)
• M5: 3,957,163 km (0.097 R)
• M6: 4,586,671 km (0.093 R)
• M7: 5,253,728 km (0.118 R)
• M8: 7,291,550 km (0.115 R)
• M9: 9,020,004 km (0.082 R)
• M10: 10,285,003 km (0.087 R)
• M11: 11,285,215 km (0.112 R)
• M12: 12,499,052 km (0.08 R)
• M13: 14,068,184 km (0.095 R)
• M14: 15,589,145 km (0.1 R)
• M15: 16,845,618 km (0.037 R)
• M16: 17,279,152 km (0.085 R)
• M17: 19,559,323 km (0.114 R)
• M18: 23,078,464 km (0.044 R)
• M19: 24,787,769 km (0.087 R)
• M20: 25,187,644 km (0.059 R)
• M21: 26,998,825 km (0.077 R)
• M22: 29,338,237 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.7

Radius: 12.1

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 3.33 AU - 4.47 AU

Year: 5052 Days

Day: 11 Hours

Environment

Temp: -207 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 31,417,180 km

• M1: 150,495 km (0.095 R)
• M2: 663,018 km (0.077 R)
• M3: 2,419,446 km (0.104 R)
• M4: 5,481,266 km (0.085 R)
• M5: 8,403,960 km (0.119 R)
• M6: 8,830,762 km (0.082 R)
• M7: 10,374,014 km (0.104 R)
• M8: 11,466,826 km (0.081 R)
• M9: 13,247,939 km (0.058 R)
• M10: 13,934,443 km (0.088 R)
• M11: 16,255,604 km (0.102 R)
• M12: 18,173,897 km (0.097 R)
• M13: 19,489,012 km (0.031 R)
• M14: 22,753,088 km (0.108 R)
• M15: 23,737,891 km (0.092 R)
• M16: 24,988,679 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 396.9

Radius: 3.6

Gravity: 30.63 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 5.79 AU - 8.73 AU

Year: 12833 Days

Day: 17.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 31,417,180 km

• M1: 46,974 km (0.051 R)
• M2: 191,485 km (0.1 R)
• M3: 328,966 km (0.108 R)
• M4: 445,054 km (0.039 R)
• M5: 567,574 km (0.094 R)
• M6: 1,230,592 km (0.1 R)
• M7: 1,560,755 km (0.072 R)
• M8: 1,754,484 km (0.102 R)
• M9: 2,189,814 km (0.111 R)
• M10: 2,337,317 km (0.111 R)
• M11: 2,471,656 km (0.056 R)
• M12: 2,611,231 km (0.032 R)
• M13: 3,390,037 km (0.062 R)
• M14: 4,006,231 km (0.092 R)
• M15: 4,846,223 km (0.087 R)
• M16: 5,258,515 km (0.074 R)
• M17: 9,531,628 km (0.081 R)
• M18: 10,693,106 km (0.105 R)
• M19: 11,609,842 km (0.078 R)
• M20: 12,754,116 km (0.113 R)
• M21: 13,598,446 km (0.053 R)
• M22: 14,160,635 km (0.107 R)
• M23: 15,264,219 km (0.108 R)
• M24: 16,776,055 km (0.089 R)
• M25: 21,068,467 km (0.098 R)
• M26: 23,288,649 km (0.084 R)
• M27: 23,732,805 km (0.117 R)
• M28: 25,006,481 km (0.116 R)
• M29: 25,472,179 km (0.07 R)
• M30: 26,420,779 km (0.071 R)
• M31: 27,987,218 km (0.113 R)
• M32: 35,571,232 km (0.067 R)
• M33: 36,875,127 km (0.076 R)
• M34: 38,333,706 km (0.111 R)
• M35: 39,201,972 km (0.112 R)
• M36: 40,465,027 km (0.101 R)
• M37: 40,592,784 km (0.091 R)
• M38: 42,939,077 km (0.1 R)
• M39: 45,374,081 km (0.111 R)
• M40: 46,205,846 km (0.079 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 33.4

Radius: 4

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 8.95 AU - 13.11 AU

Year: 24031 Days

Day: 20 Hours

Environment

Temp: -228 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 31,417,180 km

• M1: 56,847 km (0.114 R)
• M2: 271,819 km (0.037 R)
• M3: 456,872 km (0.063 R)
• M4: 620,382 km (0.111 R)
• M5: 1,394,551 km (0.037 R)
• M6: 2,390,275 km (0.088 R)
• M7: 2,758,286 km (0.052 R)
• M8: 3,740,096 km (0.058 R)
• M9: 7,346,003 km (0.118 R)
• M10: 16,967,839 km (0.112 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: 244 - 12,753 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit