🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.81

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.48 AU - 0.64 AU

Year: 275 Days

Day: 42.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 38.1 °

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: 735

Radius: 15

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.65 AU - 0.77 AU

Year: 392 Days

Day: 12.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 68,122,246 km

• M1: 186,549 km (0.087 R)
• M2: 653,443 km (0.101 R)
• M3: 1,185,563 km (0.106 R)
• M4: 2,002,667 km (0.103 R)
• M5: 2,611,380 km (0.105 R)
• M6: 3,219,496 km (0.071 R)
• M7: 3,883,411 km (0.1 R)
• M8: 4,440,364 km (0.086 R)
• M9: 4,990,136 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.1

Radius: 11.8

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 1 AU - 1.16 AU

Year: 736 Days

Day: 11.8 Hours

Environment

Temp: -165 °C

Axial Tilt: 44.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 68,122,246 km

• M1: 146,905 km (0.096 R)
• M2: 557,102 km (0.106 R)
• M3: 1,024,745 km (0.119 R)
• M4: 1,400,236 km (0.065 R)
• M5: 2,193,853 km (0.113 R)
• M6: 2,834,580 km (0.117 R)
• M7: 3,797,392 km (0.059 R)
• M8: 5,284,545 km (0.119 R)
• M9: 5,778,517 km (0.053 R)
• M10: 6,264,710 km (0.06 R)
• M11: 6,859,661 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 674.8

Radius: 10.6

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 2.49 AU - 2.57 AU

Year: 2640 Days

Day: 12.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 68,122,246 km

• M1: 131,796 km (0.108 R)
• M2: 685,009 km (0.082 R)
• M3: 1,279,361 km (0.118 R)
• M4: 2,117,408 km (0.05 R)
• M5: 2,453,555 km (0.114 R)
• M6: 3,235,802 km (0.11 R)
• M7: 4,176,623 km (0.074 R)
• M8: 6,620,155 km (0.042 R)
• M9: 7,378,167 km (0.09 R)
• M10: 7,747,075 km (0.092 R)
• M11: 8,825,526 km (0.094 R)
• M12: 9,418,981 km (0.088 R)
• M13: 10,150,814 km (0.084 R)
• M14: 10,530,793 km (0.046 R)
• M15: 11,238,690 km (0.103 R)
• M16: 12,488,729 km (0.088 R)
• M17: 12,837,143 km (0.088 R)
• M18: 13,236,868 km (0.067 R)
• M19: 18,256,775 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383.7

Radius: 14.9

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 2.55 AU - 2.59 AU

Year: 2703 Days

Day: 10.7 Hours

Environment

Temp: -206 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 68,122,246 km

• M1: 185,352 km (0.049 R)
• M2: 725,550 km (0.081 R)
• M3: 1,230,592 km (0.074 R)
• M4: 1,913,656 km (0.117 R)
• M5: 2,562,163 km (0.096 R)
• M6: 3,322,718 km (0.107 R)
• M7: 3,928,889 km (0.077 R)
• M8: 4,588,167 km (0.091 R)
• M9: 5,208,100 km (0.112 R)
• M10: 6,030,739 km (0.079 R)
• M11: 7,583,415 km (0.085 R)
• M12: 8,176,571 km (0.089 R)
• M13: 9,625,426 km (0.074 R)
• M14: 11,621,361 km (0.099 R)
• M15: 12,331,053 km (0.097 R)
• M16: 13,069,468 km (0.115 R)
• M17: 14,232,293 km (0.069 R)
• M18: 15,322,861 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 234.3

Radius: 11.4

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 2.44 AU - 3.02 AU

Year: 2959 Days

Day: 6.9 Hours

Environment

Temp: -197 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 68,122,246 km

• M1: 141,819 km (0.119 R)
• M2: 512,672 km (0.068 R)
• M3: 1,995,785 km (0.114 R)
• M4: 2,635,166 km (0.078 R)
• M5: 3,123,903 km (0.072 R)
• M6: 3,970,627 km (0.086 R)
• M7: 5,783,603 km (0.117 R)
• M8: 7,138,362 km (0.078 R)
• M9: 8,911,695 km (0.105 R)
• M10: 9,951,400 km (0.084 R)
• M11: 12,039,337 km (0.051 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 766.1

Radius: 6.9

Gravity: 16.09 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 5.02 AU - 6.78 AU

Year: 9401 Days

Day: 15.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 68,122,246 km

• M1: 87,515 km (0.088 R)
• M2: 433,834 km (0.116 R)
• M3: 736,470 km (0.049 R)
• M4: 1,034,469 km (0.104 R)
• M5: 1,272,479 km (0.082 R)
• M6: 1,706,912 km (0.119 R)
• M7: 4,009,073 km (0.091 R)
• M8: 4,725,049 km (0.072 R)
• M9: 6,115,411 km (0.085 R)
• M10: 8,015,604 km (0.062 R)
• M11: 10,692,807 km (0.095 R)
• M12: 11,281,026 km (0.087 R)
• M13: 11,778,140 km (0.069 R)
• M14: 12,405,403 km (0.092 R)
• M15: 19,088,240 km (0.05 R)
• M16: 19,635,618 km (0.073 R)
• M17: 20,032,950 km (0.114 R)
• M18: 21,591,909 km (0.051 R)
• M19: 22,186,112 km (0.066 R)
• M20: 25,792,618 km (0.069 R)
• M21: 34,027,232 km (0.115 R)
• M22: 35,766,457 km (0.084 R)
• M23: 43,050,078 km (0.114 R)
• M24: 44,398,105 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 594.5

Radius: 4.9

Gravity: 24.76 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 7.73 AU - 10.59 AU

Year: 18187 Days

Day: 15.1 Hours

Environment

Temp: -230 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 68,122,246 km

• M1: 61,186 km (0.099 R)
• M2: 228,436 km (0.11 R)
• M3: 491,878 km (0.115 R)
• M4: 825,930 km (0.075 R)
• M5: 1,137,243 km (0.106 R)
• M6: 1,738,178 km (0.107 R)
• M7: 2,108,283 km (0.107 R)
• M8: 2,551,541 km (0.1 R)
• M9: 3,289,657 km (0.101 R)
• M10: 6,180,636 km (0.11 R)
• M11: 6,387,829 km (0.104 R)
• M12: 8,117,480 km (0.118 R)
• M13: 9,249,636 km (0.096 R)
• M14: 10,483,220 km (0.117 R)
• M15: 11,633,478 km (0.068 R)
• M16: 12,865,417 km (0.108 R)
• M17: 15,892,530 km (0.039 R)
• M18: 16,125,454 km (0.116 R)
• M19: 17,653,147 km (0.043 R)
• M20: 17,902,826 km (0.119 R)
• M21: 21,086,119 km (0.039 R)
• M22: 21,937,181 km (0.112 R)
• M23: 23,405,933 km (0.094 R)
• M24: 23,808,501 km (0.086 R)
• M25: 24,318,031 km (0.057 R)
• M26: 26,212,838 km (0.081 R)
• M27: 29,352,449 km (0.091 R)
• M28: 31,133,112 km (0.057 R)
• M29: 31,619,904 km (0.119 R)
• M30: 32,608,596 km (0.1 R)
• M31: 34,647,615 km (0.097 R)
• M32: 36,365,597 km (0.099 R)
• M33: 37,177,464 km (0.118 R)
• M34: 38,696,930 km (0.11 R)
• M35: 43,654,454 km (0.083 R)
• M36: 45,034,195 km (0.102 R)
• M37: 45,500,492 km (0.116 R)
• M38: 46,442,809 km (0.108 R)
• M39: 46,601,083 km (0.036 R)
• M40: 54,630,150 km (0.117 R)
• M41: 55,515,919 km (0.072 R)
• M42: 65,105,143 km (0.05 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 290 - 18,703 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit