🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.32

Radius: 1.12

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.4 AU - 0.62 AU

Year: 235 Days

Day: 29.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 26.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 34,689,465 km

• M1: 102,325 km (0.08 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 814.2

Radius: 10.8

Gravity: 6.98 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.62 AU - 0.84 AU

Year: 403 Days

Day: 13.2 Hours

Environment

Temp: -145 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 34,689,465 km

• M1: 134,788 km (0.077 R)
• M2: 850,165 km (0.116 R)
• M3: 1,412,802 km (0.04 R)
• M4: 1,803,103 km (0.075 R)
• M5: 2,421,391 km (0.111 R)
• M6: 2,838,171 km (0.086 R)
• M7: 3,408,587 km (0.105 R)
• M8: 3,791,708 km (0.084 R)
• M9: 4,586,671 km (0.106 R)
• M10: 5,213,187 km (0.084 R)
• M11: 5,758,022 km (0.054 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201.6

Radius: 14.9

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.95 AU - 1.07 AU

Year: 655 Days

Day: 8.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 34,689,465 km

• M1: 185,352 km (0.068 R)
• M2: 659,128 km (0.043 R)
• M3: 1,150,258 km (0.057 R)
• M4: 1,805,646 km (0.08 R)
• M5: 2,511,599 km (0.118 R)
• M6: 3,637,622 km (0.108 R)
• M7: 4,429,593 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 186.9

Radius: 11.4

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 1.07 AU - 1.37 AU

Year: 870 Days

Day: 13.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,689,465 km

• M1: 141,819 km (0.088 R)
• M2: 619,186 km (0.108 R)
• M3: 1,275,322 km (0.09 R)
• M4: 1,712,148 km (0.093 R)
• M5: 2,738,688 km (0.104 R)
• M6: 3,441,349 km (0.077 R)
• M7: 4,784,738 km (0.055 R)
• M8: 5,302,497 km (0.077 R)
• M9: 5,753,684 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372.7

Radius: 14.6

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.2 AU - 1.58 AU

Year: 1058 Days

Day: 14.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 70.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,689,465 km

• M1: 183,557 km (0.091 R)
• M2: 1,021,454 km (0.097 R)
• M3: 1,647,073 km (0.025 R)
• M4: 3,159,956 km (0.109 R)
• M5: 3,915,126 km (0.114 R)
• M6: 4,376,187 km (0.049 R)
• M7: 5,409,160 km (0.105 R)
• M8: 6,451,857 km (0.041 R)
• M9: 8,550,117 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.4

Radius: 10

Gravity: 8.17 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 3.27 AU - 4.41 AU

Year: 4859 Days

Day: 14.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 34,689,465 km

• M1: 124,465 km (0.055 R)
• M2: 535,710 km (0.075 R)
• M3: 864,227 km (0.111 R)
• M4: 1,249,142 km (0.038 R)
• M5: 2,313,082 km (0.108 R)
• M6: 2,718,343 km (0.102 R)
• M7: 3,033,695 km (0.119 R)
• M8: 3,628,945 km (0.103 R)
• M9: 4,083,573 km (0.053 R)
• M10: 4,474,323 km (0.033 R)
• M11: 6,326,045 km (0.082 R)
• M12: 7,801,978 km (0.081 R)
• M13: 8,959,416 km (0.087 R)
• M14: 9,411,352 km (0.108 R)
• M15: 11,708,726 km (0.061 R)
• M16: 12,299,339 km (0.088 R)
• M17: 14,356,758 km (0.048 R)
• M18: 14,692,605 km (0.074 R)
• M19: 15,496,395 km (0.116 R)
• M20: 16,756,757 km (0.059 R)
• M21: 18,410,412 km (0.112 R)
• M22: 20,170,131 km (0.054 R)
• M23: 21,598,043 km (0.074 R)
• M24: 24,494,856 km (0.105 R)
• M25: 25,136,182 km (0.04 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 355.6

Radius: 11.1

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 5.08 AU - 6.52 AU

Year: 9019 Days

Day: 5.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 34,689,465 km

• M1: 138,079 km (0.112 R)
• M2: 530,025 km (0.113 R)
• M3: 1,311,824 km (0.108 R)
• M4: 1,937,891 km (0.071 R)
• M5: 2,607,042 km (0.102 R)
• M6: 3,424,146 km (0.096 R)
• M7: 3,833,595 km (0.036 R)
• M8: 4,404,311 km (0.073 R)
• M9: 5,002,702 km (0.11 R)
• M10: 5,351,415 km (0.063 R)
• M11: 7,570,400 km (0.072 R)
• M12: 8,349,356 km (0.08 R)
• M13: 9,223,906 km (0.084 R)
• M14: 10,672,761 km (0.083 R)
• M15: 12,163,803 km (0.059 R)
• M16: 13,397,686 km (0.07 R)
• M17: 14,420,188 km (0.093 R)
• M18: 15,677,857 km (0.074 R)
• M19: 16,492,268 km (0.1 R)
• M20: 19,673,616 km (0.111 R)
• M21: 23,002,917 km (0.112 R)
• M22: 24,717,009 km (0.092 R)
• M23: 27,044,153 km (0.048 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 180.8

Radius: 3

Gravity: 20.09 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 5.28 AU - 8.74 AU

Year: 11984 Days

Day: 22.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 34,689,465 km

• M1: 37,399 km (0.107 R)
• M2: 246,238 km (0.048 R)
• M3: 372,200 km (0.09 R)
• M4: 908,957 km (0.043 R)
• M5: 1,574,518 km (0.11 R)
• M6: 2,156,753 km (0.117 R)
• M7: 2,271,793 km (0.114 R)
• M8: 2,478,388 km (0.088 R)
• M9: 3,132,280 km (0.104 R)
• M10: 3,774,504 km (0.071 R)
• M11: 6,057,816 km (0.025 R)
• M12: 6,287,299 km (0.114 R)
• M13: 6,556,575 km (0.105 R)
• M14: 7,597,328 km (0.089 R)
• M15: 8,097,733 km (0.052 R)
• M16: 8,619,680 km (0.073 R)
• M17: 9,078,646 km (0.115 R)
• M18: 9,206,552 km (0.075 R)
• M19: 10,552,933 km (0.097 R)
• M20: 10,647,180 km (0.118 R)
• M21: 11,922,950 km (0.093 R)
• M22: 13,909,161 km (0.108 R)
• M23: 15,308,949 km (0.113 R)
• M24: 20,575,841 km (0.074 R)
• M25: 23,331,284 km (0.04 R)
• M26: 23,975,303 km (0.102 R)
• M27: 26,064,138 km (0.067 R)
• M28: 26,322,793 km (0.104 R)
• M29: 26,844,889 km (0.114 R)
• M30: 28,635,576 km (0.116 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: 372 - 11,403 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit