🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.97

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.57 AU - 0.71 AU

Year: 336 Days

Day: 44.9 Hours

Environment

Temp: -122 °C

Axial Tilt: 17.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,883,998 km

• M1: 56,548 km (0.041 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.7

Radius: 10.6

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.77 AU - 0.93 AU

Year: 514 Days

Day: 8.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 60,883,998 km

• M1: 143,764 km (0.062 R)
• M2: 558,748 km (0.075 R)
• M3: 996,322 km (0.086 R)
• M4: 1,528,142 km (0.067 R)
• M5: 2,001,919 km (0.063 R)
• M6: 3,413,524 km (0.076 R)
• M7: 3,761,788 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 933.9

Radius: 10.6

Gravity: 8.31 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.4 AU - 1.62 AU

Year: 1217 Days

Day: 9.4 Hours

Environment

Temp: -172 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 60,883,998 km

• M1: 132,993 km (0.091 R)
• M2: 575,353 km (0.118 R)
• M3: 958,922 km (0.041 R)
• M4: 1,422,676 km (0.1 R)
• M5: 1,886,579 km (0.096 R)
• M6: 2,305,303 km (0.114 R)
• M7: 2,679,298 km (0.11 R)
• M8: 3,697,012 km (0.087 R)
• M9: 4,106,162 km (0.115 R)
• M10: 5,325,983 km (0.066 R)
• M11: 5,849,426 km (0.075 R)
• M12: 6,872,975 km (0.081 R)
• M13: 7,230,813 km (0.07 R)
• M14: 7,818,434 km (0.057 R)
• M15: 8,788,875 km (0.072 R)
• M16: 9,334,159 km (0.067 R)
• M17: 9,902,033 km (0.091 R)
• M18: 10,968,067 km (0.119 R)
• M19: 11,387,091 km (0.046 R)
• M20: 11,962,295 km (0.109 R)
• M21: 12,632,493 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 548.4

Radius: 13.6

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.06 AU - 3.4 AU

Year: 2959 Days

Day: 8.7 Hours

Environment

Temp: -210 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 60,883,998 km

• M1: 170,093 km (0.114 R)
• M2: 781,649 km (0.119 R)
• M3: 1,385,875 km (0.086 R)
• M4: 1,942,828 km (0.108 R)
• M5: 2,845,651 km (0.073 R)
• M6: 3,740,994 km (0.057 R)
• M7: 4,193,528 km (0.116 R)
• M8: 5,427,112 km (0.053 R)
• M9: 10,467,213 km (0.111 R)
• M10: 11,495,100 km (0.082 R)
• M11: 15,179,846 km (0.079 R)
• M12: 17,397,185 km (0.119 R)
• M13: 18,895,258 km (0.035 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.3

Radius: 14.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 3.46 AU - 4.54 AU

Year: 5248 Days

Day: 6.5 Hours

Environment

Temp: -205 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 60,883,998 km

• M1: 185,950 km (0.108 R)
• M2: 817,552 km (0.086 R)
• M3: 2,725,823 km (0.069 R)
• M4: 3,861,271 km (0.118 R)
• M5: 4,864,624 km (0.105 R)
• M6: 5,617,550 km (0.053 R)
• M7: 6,447,070 km (0.057 R)
• M8: 7,054,587 km (0.086 R)
• M9: 7,731,816 km (0.03 R)
• M10: 8,351,301 km (0.097 R)
• M11: 8,933,536 km (0.119 R)
• M12: 10,372,518 km (0.111 R)
• M13: 10,845,098 km (0.036 R)
• M14: 11,791,155 km (0.093 R)
• M15: 13,061,689 km (0.118 R)
• M16: 15,464,381 km (0.107 R)
• M17: 17,477,968 km (0.095 R)
• M18: 18,720,678 km (0.101 R)
• M19: 20,509,419 km (0.051 R)

Planet 6 - Ice Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 500.8

Radius: 4.5

Gravity: 24.73 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 5.3 AU - 6.68 AU

Year: 9617 Days

Day: 15.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 60,883,998 km

• M1: 69,114 km (0.093 R)
• M2: 300,991 km (0.077 R)
• M3: 521,947 km (0.07 R)
• M4: 873,801 km (0.117 R)
• M5: 1,678,339 km (0.064 R)
• M6: 1,826,740 km (0.037 R)
• M7: 2,016,280 km (0.117 R)
• M8: 3,514,353 km (0.092 R)
• M9: 4,145,656 km (0.106 R)
• M10: 4,673,587 km (0.107 R)
• M11: 4,849,365 km (0.053 R)
• M12: 5,059,849 km (0.063 R)
• M13: 5,929,760 km (0.1 R)
• M14: 8,951,039 km (0.119 R)
• M15: 13,325,430 km (0.12 R)
• M16: 17,994,978 km (0.037 R)
• M17: 18,719,182 km (0.083 R)
• M18: 21,008,328 km (0.11 R)
• M19: 24,870,048 km (0.081 R)
• M20: 29,476,615 km (0.058 R)
• M21: 29,875,892 km (0.046 R)
• M22: 33,742,847 km (0.106 R)
• M23: 41,945,897 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 639.5

Radius: 6.3

Gravity: 16.11 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 6.13 AU - 9.85 AU

Year: 14816 Days

Day: 17.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 60,883,998 km

• M1: 78,389 km (0.045 R)
• M2: 279,449 km (0.064 R)
• M3: 529,277 km (0.091 R)
• M4: 972,536 km (0.107 R)
• M5: 1,248,843 km (0.11 R)
• M6: 1,530,835 km (0.119 R)
• M7: 2,185,026 km (0.1 R)
• M8: 2,618,860 km (0.093 R)
• M9: 3,284,870 km (0.115 R)
• M10: 3,494,457 km (0.111 R)
• M11: 4,615,543 km (0.071 R)
• M12: 4,845,625 km (0.071 R)
• M13: 5,436,536 km (0.114 R)
• M14: 6,311,085 km (0.117 R)
• M15: 9,337,450 km (0.076 R)
• M16: 12,951,436 km (0.115 R)
• M17: 13,410,402 km (0.116 R)
• M18: 14,710,707 km (0.111 R)
• M19: 16,623,465 km (0.052 R)
• M20: 17,401,224 km (0.111 R)
• M21: 18,530,688 km (0.096 R)
• M22: 21,933,441 km (0.083 R)
• M23: 22,868,578 km (0.119 R)
• M24: 25,730,684 km (0.064 R)
• M25: 26,247,246 km (0.078 R)
• M26: 30,977,979 km (0.073 R)
• M27: 33,237,954 km (0.082 R)
• M28: 42,369,109 km (0.119 R)
• M29: 45,298,086 km (0.084 R)
• M30: 47,118,841 km (0.081 R)
• M31: 48,987,768 km (0.094 R)
• M32: 53,707,281 km (0.111 R)
• M33: 55,573,963 km (0.048 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 362 - 19,813 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit