🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.97

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.53 AU - 0.57 AU

Year: 263 Days

Day: 30.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 23.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.56 AU - 0.6 AU

Year: 285 Days

Day: 31 Hours

Environment

Temp: -120 °C

Axial Tilt: 32 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 301.7

Radius: 11.6

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.84 AU - 1.2 AU

Year: 665 Days

Day: 12.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 75,388,484 km

• M1: 144,212 km (0.108 R)
• M2: 731,683 km (0.084 R)
• M3: 1,126,921 km (0.099 R)
• M4: 1,570,628 km (0.096 R)
• M5: 2,270,896 km (0.107 R)
• M6: 2,729,413 km (0.114 R)
• M7: 3,192,119 km (0.032 R)
• M8: 3,796,046 km (0.066 R)
• M9: 4,180,363 km (0.072 R)
• M10: 5,297,410 km (0.042 R)
• M11: 5,727,953 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 785.8

Radius: 15

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.16 AU - 1.2 AU

Year: 828 Days

Day: 11.9 Hours

Environment

Temp: -159 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 75,388,484 km

• M1: 186,549 km (0.1 R)
• M2: 788,979 km (0.119 R)
• M3: 1,299,258 km (0.084 R)
• M4: 1,907,672 km (0.106 R)
• M5: 2,423,934 km (0.053 R)
• M6: 3,034,443 km (0.072 R)
• M7: 3,502,236 km (0.077 R)
• M8: 4,159,718 km (0.064 R)
• M9: 4,723,254 km (0.087 R)
• M10: 5,225,603 km (0.108 R)
• M11: 5,743,960 km (0.095 R)
• M12: 6,360,153 km (0.081 R)
• M13: 7,134,622 km (0.116 R)
• M14: 9,033,916 km (0.054 R)
• M15: 9,529,384 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 615.5

Radius: 9.2

Gravity: 7.27 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 2.55 AU - 3.19 AU

Year: 3139 Days

Day: 10.2 Hours

Environment

Temp: -206 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 75,388,484 km

• M1: 114,442 km (0.1 R)
• M2: 496,665 km (0.051 R)
• M3: 1,505,254 km (0.119 R)
• M4: 2,050,837 km (0.069 R)
• M5: 2,348,986 km (0.098 R)
• M6: 2,933,315 km (0.118 R)
• M7: 3,592,443 km (0.099 R)
• M8: 4,154,333 km (0.06 R)
• M9: 4,727,592 km (0.047 R)
• M10: 5,154,544 km (0.092 R)
• M11: 5,763,856 km (0.113 R)
• M12: 6,140,993 km (0.101 R)
• M13: 6,505,862 km (0.058 R)
• M14: 7,095,427 km (0.12 R)
• M15: 8,517,953 km (0.059 R)
• M16: 9,968,005 km (0.092 R)
• M17: 11,788,611 km (0.091 R)
• M18: 12,981,654 km (0.102 R)
• M19: 14,448,611 km (0.068 R)
• M20: 20,176,714 km (0.092 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 872.7

Radius: 8

Gravity: 13.64 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 6.03 AU - 6.67 AU

Year: 10332 Days

Day: 24 Hours

Environment

Temp: -213 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 75,388,484 km

• M1: 107,411 km (0.059 R)
• M2: 648,656 km (0.099 R)
• M3: 1,154,447 km (0.097 R)
• M4: 1,603,390 km (0.089 R)
• M5: 1,869,225 km (0.053 R)
• M6: 2,238,433 km (0.083 R)
• M7: 2,572,485 km (0.117 R)
• M8: 3,594,687 km (0.117 R)
• M9: 4,372,895 km (0.075 R)
• M10: 4,929,699 km (0.051 R)
• M11: 6,184,226 km (0.079 R)
• M12: 6,725,322 km (0.046 R)
• M13: 7,297,534 km (0.119 R)
• M14: 7,552,598 km (0.104 R)
• M15: 12,190,132 km (0.034 R)
• M16: 14,125,480 km (0.115 R)
• M17: 14,994,943 km (0.091 R)
• M18: 16,184,994 km (0.116 R)
• M19: 20,975,117 km (0.09 R)
• M20: 22,640,890 km (0.081 R)
• M21: 27,238,780 km (0.117 R)
• M22: 29,218,708 km (0.088 R)
• M23: 29,539,895 km (0.103 R)
• M24: 35,124,832 km (0.085 R)
• M25: 37,719,757 km (0.079 R)
• M26: 39,258,670 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 41.5

Radius: 6.7

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 5.69 AU - 7.53 AU

Year: 10973 Days

Day: 17.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 75,388,484 km

• M1: 83,326 km (0.113 R)
• M2: 1,457,981 km (0.046 R)
• M3: 1,925,025 km (0.108 R)
• M4: 2,180,539 km (0.094 R)
• M5: 3,052,545 km (0.118 R)
• M6: 3,474,560 km (0.11 R)
• M7: 4,055,748 km (0.11 R)
• M8: 6,299,267 km (0.107 R)
• M9: 7,343,011 km (0.117 R)
• M10: 10,218,432 km (0.066 R)
• M11: 12,031,558 km (0.063 R)
• M12: 12,461,802 km (0.102 R)
• M13: 14,671,213 km (0.099 R)
• M14: 15,112,826 km (0.073 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 900.7

Radius: 3.6

Gravity: 69.5 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 7.66 AU - 10.18 AU

Year: 17201 Days

Day: 24.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 75,388,484 km

• M1: 48,320 km (0.091 R)
• M2: 514,168 km (0.036 R)
• M3: 804,089 km (0.115 R)
• M4: 1,594,713 km (0.087 R)
• M5: 1,979,030 km (0.104 R)
• M6: 2,355,119 km (0.109 R)
• M7: 2,607,341 km (0.108 R)
• M8: 3,618,922 km (0.105 R)
• M9: 5,666,767 km (0.067 R)
• M10: 5,787,792 km (0.12 R)
• M11: 6,729,062 km (0.096 R)
• M12: 7,048,752 km (0.091 R)
• M13: 7,571,447 km (0.111 R)
• M14: 8,377,182 km (0.069 R)
• M15: 8,747,137 km (0.114 R)
• M16: 11,198,298 km (0.101 R)
• M17: 13,633,901 km (0.039 R)
• M18: 14,821,409 km (0.096 R)
• M19: 20,262,284 km (0.108 R)
• M20: 22,503,110 km (0.111 R)
• M21: 22,705,366 km (0.085 R)
• M22: 23,735,198 km (0.104 R)
• M23: 27,469,460 km (0.079 R)
• M24: 32,085,303 km (0.087 R)
• M25: 38,910,855 km (0.093 R)
• M26: 42,044,482 km (0.106 R)
• M27: 54,787,527 km (0.089 R)
• M28: 67,751,080 km (0.09 R)
• M29: 70,957,711 km (0.111 R)
• M30: 72,488,097 km (0.115 R)
• M31: 74,937,313 km (0.046 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 351 - 11,395 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit