🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 0.43 AU - 0.63 AU

Year: 149 Days

Day: 43.3 Hours

Environment

Temp: 199 °C

Axial Tilt: 8.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.76 AU - 0.94 AU

Year: 302 Days

Day: 27.3 Hours

Environment

Temp: 23 °C

Axial Tilt: 39.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 81,756,499 km

• M1: 22,440 km (0.094 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.02

Radius: 1.56

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 2.37 AU - 2.87 AU

Year: 1633 Days

Day: 47.4 Hours

Environment

Temp: -113 °C

Axial Tilt: 18.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,756,499 km

• M1: 2,172,311 km (0.117 R)

Asteroid Belt

Center: 3.73 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 4.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 102.5

Radius: 9.9

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 4.31 AU - 5.37 AU

Year: 4100 Days

Day: 10.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 81,756,499 km

• M1: 124,017 km (0.064 R)
• M2: 491,429 km (0.108 R)
• M3: 1,596,209 km (0.102 R)
• M4: 5,318,803 km (0.103 R)
• M5: 5,879,047 km (0.03 R)
• M6: 6,355,217 km (0.113 R)
• M7: 9,576,956 km (0.058 R)
• M8: 9,903,379 km (0.079 R)
• M9: 10,543,957 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 254.2

Radius: 8.3

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 5.03 AU - 5.35 AU

Year: 4552 Days

Day: 12.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 81,756,499 km

• M1: 103,223 km (0.091 R)
• M2: 553,213 km (0.084 R)
• M3: 1,251,536 km (0.092 R)
• M4: 1,854,415 km (0.097 R)
• M5: 2,142,242 km (0.071 R)
• M6: 2,548,101 km (0.12 R)
• M7: 3,386,148 km (0.073 R)
• M8: 4,729,088 km (0.089 R)
• M9: 6,479,981 km (0.118 R)
• M10: 10,178,190 km (0.081 R)
• M11: 12,080,477 km (0.058 R)
• M12: 14,400,141 km (0.081 R)
• M13: 20,383,308 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 509.6

Radius: 13.3

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 7.66 AU - 12.3 AU

Year: 12138 Days

Day: 12.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 81,756,499 km

• M1: 165,605 km (0.114 R)
• M2: 846,275 km (0.079 R)
• M3: 1,430,006 km (0.092 R)
• M4: 2,521,472 km (0.102 R)
• M5: 4,276,106 km (0.103 R)
• M6: 7,171,572 km (0.107 R)
• M7: 9,383,826 km (0.101 R)
• M8: 11,904,699 km (0.027 R)
• M9: 14,070,577 km (0.109 R)
• M10: 16,136,524 km (0.041 R)
• M11: 16,701,106 km (0.109 R)
• M12: 18,321,550 km (0.096 R)
• M13: 21,196,074 km (0.081 R)
• M14: 22,304,145 km (0.091 R)
• M15: 24,175,315 km (0.098 R)
• M16: 35,124,682 km (0.1 R)
• M17: 37,283,978 km (0.097 R)
• M18: 39,785,554 km (0.037 R)
• M19: 43,881,095 km (0.118 R)
• M20: 45,399,513 km (0.1 R)
• M21: 46,383,867 km (0.072 R)
• M22: 46,810,071 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 664.7

Radius: 6.3

Gravity: 16.75 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 12.78 AU - 17.44 AU

Year: 22613 Days

Day: 19.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 81,756,499 km

• M1: 230,381 km (0.058 R)
• M2: 438,621 km (0.117 R)
• M3: 741,557 km (0.112 R)
• M4: 971,937 km (0.103 R)
• M5: 1,464,862 km (0.101 R)
• M6: 1,685,968 km (0.053 R)
• M7: 1,929,663 km (0.108 R)
• M8: 2,350,482 km (0.081 R)
• M9: 6,482,076 km (0.089 R)
• M10: 6,894,667 km (0.06 R)
• M11: 7,131,330 km (0.099 R)
• M12: 8,998,910 km (0.086 R)
• M13: 9,281,800 km (0.112 R)
• M14: 10,786,006 km (0.055 R)
• M15: 11,234,800 km (0.11 R)
• M16: 11,563,018 km (0.062 R)
• M17: 12,655,980 km (0.094 R)
• M18: 12,939,767 km (0.044 R)
• M19: 13,593,510 km (0.109 R)
• M20: 14,810,040 km (0.025 R)
• M21: 16,598,781 km (0.042 R)
• M22: 17,110,556 km (0.072 R)
• M23: 18,255,428 km (0.098 R)
• M24: 18,709,009 km (0.099 R)
• M25: 19,170,219 km (0.117 R)
• M26: 21,489,734 km (0.09 R)
• M27: 27,027,249 km (0.054 R)
• M28: 28,214,158 km (0.079 R)
• M29: 31,983,277 km (0.11 R)
• M30: 33,715,919 km (0.086 R)
• M31: 35,933,109 km (0.119 R)
• M32: 48,316,671 km (0.11 R)
• M33: 49,709,727 km (0.101 R)
• M34: 50,593,850 km (0.065 R)
• M35: 51,849,276 km (0.085 R)
• M36: 52,941,639 km (0.086 R)
• M37: 53,309,201 km (0.1 R)
• M38: 54,421,910 km (0.102 R)
• M39: 57,465,030 km (0.115 R)
• M40: 59,621,783 km (0.029 R)
• M41: 61,425,933 km (0.07 R)
• M42: 63,059,990 km (0.053 R)
• M43: 65,353,775 km (0.086 R)
• M44: 70,328,502 km (0.084 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 229 - 15,346 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit