🌌 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: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.5

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.53 AU - 0.69 AU

Year: 313 Days

Day: 32.4 Hours

Environment

Temp: -136 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 68,191,437 km

• M1: 142,118 km (0.115 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 566.1

Radius: 14.5

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.76 AU - 1.24 AU

Year: 656 Days

Day: 9.9 Hours

Environment

Temp: -161 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 68,191,437 km

• M1: 180,265 km (0.066 R)
• M2: 661,372 km (0.104 R)
• M3: 1,149,360 km (0.072 R)
• M4: 1,616,405 km (0.078 R)
• M5: 2,534,786 km (0.104 R)
• M6: 3,107,447 km (0.063 R)
• M7: 3,739,049 km (0.087 R)
• M8: 5,417,388 km (0.11 R)
• M9: 5,938,886 km (0.086 R)
• M10: 7,146,589 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.2

Radius: 12.1

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.93 AU - 1.21 AU

Year: 726 Days

Day: 8.5 Hours

Environment

Temp: -167 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 68,191,437 km

• M1: 150,795 km (0.066 R)
• M2: 810,372 km (0.104 R)
• M3: 2,026,303 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903

Radius: 14.4

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 2.45 AU - 3.15 AU

Year: 3074 Days

Day: 10.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 68,191,437 km

• M1: 179,069 km (0.113 R)
• M2: 776,712 km (0.091 R)
• M3: 1,392,307 km (0.093 R)
• M4: 2,202,829 km (0.118 R)
• M5: 3,519,589 km (0.076 R)
• M6: 4,418,672 km (0.109 R)
• M7: 5,008,986 km (0.03 R)
• M8: 6,176,298 km (0.095 R)
• M9: 7,260,733 km (0.073 R)
• M10: 9,083,583 km (0.071 R)
• M11: 10,444,325 km (0.103 R)
• M12: 13,182,564 km (0.113 R)
• M13: 13,812,521 km (0.11 R)
• M14: 14,361,096 km (0.108 R)
• M15: 14,872,422 km (0.092 R)
• M16: 15,448,972 km (0.109 R)
• M17: 16,479,851 km (0.117 R)
• M18: 18,799,665 km (0.074 R)
• M19: 21,132,644 km (0.112 R)
• M20: 22,607,978 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 707.2

Radius: 13

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.99 AU - 3.13 AU

Year: 3511 Days

Day: 14.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 68,191,437 km

• M1: 161,715 km (0.089 R)
• M2: 577,747 km (0.043 R)
• M3: 1,414,597 km (0.041 R)
• M4: 1,861,147 km (0.112 R)
• M5: 2,585,350 km (0.082 R)
• M6: 3,301,625 km (0.077 R)
• M7: 4,691,240 km (0.111 R)
• M8: 5,651,808 km (0.118 R)
• M9: 6,769,603 km (0.111 R)
• M10: 8,132,888 km (0.106 R)
• M11: 9,101,385 km (0.057 R)
• M12: 10,105,187 km (0.075 R)
• M13: 11,011,151 km (0.068 R)
• M14: 11,925,643 km (0.117 R)
• M15: 12,796,153 km (0.11 R)
• M16: 13,223,105 km (0.045 R)
• M17: 14,663,882 km (0.08 R)
• M18: 15,236,992 km (0.064 R)
• M19: 23,330,985 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217

Radius: 12.3

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 5 AU - 5.22 AU

Year: 7578 Days

Day: 14.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 68,191,437 km

• M1: 161,865 km (0.032 R)
• M2: 606,021 km (0.059 R)
• M3: 1,330,823 km (0.077 R)
• M4: 2,111,275 km (0.048 R)
• M5: 2,903,545 km (0.072 R)
• M6: 3,610,395 km (0.064 R)
• M7: 4,060,834 km (0.112 R)
• M8: 8,421,762 km (0.075 R)
• M9: 10,444,475 km (0.11 R)
• M10: 18,872,519 km (0.079 R)
• M11: 21,735,823 km (0.111 R)
• M12: 24,800,784 km (0.05 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 99.9

Radius: 13.8

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 5 AU - 5.68 AU

Year: 8095 Days

Day: 6.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 68,191,437 km

• M1: 175,927 km (0.114 R)
• M2: 1,211,593 km (0.042 R)
• M3: 1,714,541 km (0.065 R)
• M4: 2,179,491 km (0.108 R)
• M5: 2,667,629 km (0.095 R)
• M6: 3,372,235 km (0.1 R)
• M7: 3,868,601 km (0.084 R)
• M8: 4,798,053 km (0.089 R)
• M9: 5,328,676 km (0.076 R)
• M10: 6,198,139 km (0.111 R)
• M11: 8,119,275 km (0.105 R)
• M12: 9,162,271 km (0.119 R)
• M13: 9,867,924 km (0.088 R)
• M14: 13,243,899 km (0.116 R)
• M15: 15,039,672 km (0.076 R)
• M16: 15,864,555 km (0.059 R)
• M17: 16,502,740 km (0.089 R)
• M18: 18,404,727 km (0.073 R)
• M19: 20,016,046 km (0.103 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 781.6

Radius: 5.6

Gravity: 24.92 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 7.88 AU - 8.86 AU

Year: 15885 Days

Day: 15.9 Hours

Environment

Temp: -231 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 68,191,437 km

• M1: 109,954 km (0.118 R)
• M2: 416,331 km (0.108 R)
• M3: 622,776 km (0.03 R)
• M4: 965,056 km (0.038 R)
• M5: 1,581,100 km (0.049 R)
• M6: 5,336,006 km (0.115 R)
• M7: 5,715,686 km (0.045 R)
• M8: 9,000,107 km (0.09 R)
• M9: 9,983,563 km (0.065 R)
• M10: 12,291,111 km (0.108 R)
• M11: 12,751,872 km (0.107 R)
• M12: 17,184,607 km (0.089 R)
• M13: 19,565,457 km (0.072 R)
• M14: 20,284,125 km (0.048 R)
• M15: 22,061,348 km (0.113 R)
• M16: 22,643,433 km (0.091 R)
• M17: 23,235,691 km (0.117 R)
• M18: 28,579,177 km (0.1 R)
• M19: 29,387,155 km (0.041 R)
• M20: 35,078,906 km (0.065 R)
• M21: 37,492,518 km (0.109 R)
• M22: 39,161,731 km (0.081 R)
• M23: 43,701,876 km (0.094 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: 393 - 14,237 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit