🌌 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 - Gas Giant

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 614.2

Radius: 12.5

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.47 AU - 0.71 AU

Year: 313 Days

Day: 12.1 Hours

Environment

Temp: -142 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 81,587,579 km

• M1: 159,322 km (0.075 R)
• M2: 615,745 km (0.12 R)
• M3: 1,061,397 km (0.064 R)
• M4: 1,715,588 km (0.087 R)
• M5: 2,155,855 km (0.104 R)
• M6: 2,590,886 km (0.082 R)
• M7: 3,044,765 km (0.109 R)
• M8: 3,849,452 km (0.112 R)
• M9: 4,289,869 km (0.067 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228.2

Radius: 9.9

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.63 AU - 0.67 AU

Year: 362 Days

Day: 13.5 Hours

Environment

Temp: -156 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 81,587,579 km

• M1: 123,119 km (0.11 R)
• M2: 453,880 km (0.076 R)
• M3: 797,656 km (0.102 R)
• M4: 1,433,746 km (0.053 R)
• M5: 2,145,383 km (0.068 R)
• M6: 2,795,386 km (0.113 R)
• M7: 3,307,908 km (0.078 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 193.3

Radius: 14.7

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.94 AU - 1.1 AU

Year: 711 Days

Day: 8.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 81,587,579 km

• M1: 182,809 km (0.11 R)
• M2: 911,649 km (0.03 R)
• M3: 1,511,387 km (0.119 R)
• M4: 2,236,039 km (0.114 R)
• M5: 2,762,923 km (0.118 R)
• M6: 4,163,458 km (0.098 R)
• M7: 4,838,594 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 264.9

Radius: 14.9

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.04 AU - 1.7 AU

Year: 1107 Days

Day: 12.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 81,587,579 km

• M1: 185,501 km (0.086 R)
• M2: 911,649 km (0.096 R)
• M3: 1,472,641 km (0.077 R)
• M4: 2,180,239 km (0.1 R)
• M5: 2,735,547 km (0.096 R)
• M6: 3,424,445 km (0.115 R)
• M7: 3,932,180 km (0.106 R)
• M8: 4,443,057 km (0.12 R)
• M9: 4,998,514 km (0.111 R)
• M10: 6,491,351 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 333.8

Radius: 9.7

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.66 AU - 2.74 AU

Year: 2252 Days

Day: 6.8 Hours

Environment

Temp: -205 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 81,587,579 km

• M1: 121,324 km (0.117 R)
• M2: 793,766 km (0.094 R)
• M3: 1,441,824 km (0.065 R)
• M4: 1,861,446 km (0.061 R)
• M5: 2,204,923 km (0.081 R)
• M6: 2,643,993 km (0.062 R)
• M7: 3,036,538 km (0.068 R)
• M8: 3,665,148 km (0.096 R)
• M9: 4,359,132 km (0.1 R)
• M10: 4,727,742 km (0.11 R)
• M11: 5,374,004 km (0.028 R)
• M12: 5,684,719 km (0.09 R)
• M13: 6,031,038 km (0.115 R)
• M14: 7,921,955 km (0.079 R)
• M15: 9,173,491 km (0.109 R)
• M16: 9,522,054 km (0.117 R)
• M17: 11,728,772 km (0.078 R)
• M18: 13,149,503 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 159

Radius: 11.2

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 3.96 AU - 4.3 AU

Year: 5793 Days

Day: 7.4 Hours

Environment

Temp: -229 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 81,587,579 km

• M1: 139,724 km (0.114 R)
• M2: 666,608 km (0.059 R)
• M3: 1,111,811 km (0.032 R)
• M4: 1,624,334 km (0.047 R)
• M5: 1,979,778 km (0.029 R)
• M6: 3,305,515 km (0.083 R)
• M7: 4,709,191 km (0.056 R)
• M8: 7,855,683 km (0.044 R)
• M9: 8,785,883 km (0.107 R)
• M10: 10,126,130 km (0.117 R)
• M11: 12,276,899 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 356.2

Radius: 7

Gravity: 7.27 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 6.05 AU - 6.83 AU

Year: 11281 Days

Day: 19.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 81,587,579 km

• M1: 87,814 km (0.092 R)
• M2: 322,084 km (0.089 R)
• M3: 1,557,912 km (0.115 R)
• M4: 2,097,362 km (0.104 R)
• M5: 2,503,072 km (0.09 R)
• M6: 3,809,959 km (0.048 R)
• M7: 4,498,109 km (0.101 R)
• M8: 5,297,410 km (0.111 R)
• M9: 6,871,778 km (0.071 R)
• M10: 8,389,299 km (0.085 R)
• M11: 8,867,264 km (0.109 R)
• M12: 9,363,331 km (0.089 R)
• M13: 9,688,556 km (0.043 R)
• M14: 9,925,370 km (0.056 R)
• M15: 11,800,280 km (0.081 R)
• M16: 12,179,959 km (0.098 R)
• M17: 12,455,968 km (0.075 R)
• M18: 15,132,124 km (0.085 R)
• M19: 18,168,961 km (0.06 R)
• M20: 20,951,930 km (0.103 R)
• M21: 24,969,381 km (0.096 R)
• M22: 27,440,588 km (0.069 R)
• M23: 32,756,997 km (0.087 R)
• M24: 34,377,591 km (0.051 R)
• M25: 34,597,649 km (0.114 R)
• M26: 37,428,041 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 975.8

Radius: 6.7

Gravity: 21.74 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 8 AU - 9.98 AU

Year: 18606 Days

Day: 23.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 81,587,579 km

• M1: 83,476 km (0.081 R)
• M2: 316,699 km (0.07 R)
• M3: 582,833 km (0.092 R)
• M4: 795,861 km (0.058 R)
• M5: 1,088,025 km (0.074 R)
• M6: 1,296,714 km (0.045 R)
• M7: 2,154,509 km (0.105 R)
• M8: 2,704,281 km (0.084 R)
• M9: 3,175,065 km (0.096 R)
• M10: 3,401,108 km (0.099 R)
• M11: 4,591,009 km (0.097 R)
• M12: 4,955,429 km (0.091 R)
• M13: 8,929,048 km (0.106 R)
• M14: 10,768,204 km (0.108 R)
• M15: 16,568,563 km (0.115 R)
• M16: 17,512,824 km (0.084 R)
• M17: 18,674,302 km (0.027 R)
• M18: 19,981,788 km (0.072 R)
• M19: 21,449,193 km (0.072 R)
• M20: 21,852,359 km (0.073 R)
• M21: 26,165,715 km (0.095 R)
• M22: 36,429,625 km (0.081 R)
• M23: 37,583,473 km (0.042 R)
• M24: 41,035,893 km (0.045 R)
• M25: 45,186,785 km (0.115 R)
• M26: 47,193,491 km (0.104 R)
• M27: 52,287,149 km (0.094 R)
• M28: 56,387,028 km (0.107 R)
• M29: 59,698,227 km (0.076 R)
• M30: 60,897,104 km (0.058 R)
• M31: 65,853,581 km (0.076 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 442 - 18,926 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit