🌌 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: 3.52

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.5 AU - 0.6 AU

Year: 263 Days

Day: 16.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 1.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,146,593 km

• M1: 42,037 km (0.113 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 500

Radius: 9.3

Gravity: 5.78 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.69 AU - 1.11 AU

Year: 551 Days

Day: 5.1 Hours

Environment

Temp: -149 °C

Axial Tilt: 42.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,146,593 km

• M1: 115,639 km (0.089 R)
• M2: 449,691 km (0.074 R)
• M3: 850,913 km (0.088 R)
• M4: 1,246,001 km (0.093 R)
• M5: 1,613,712 km (0.114 R)
• M6: 2,036,476 km (0.113 R)
• M7: 2,444,130 km (0.068 R)
• M8: 2,787,906 km (0.088 R)
• M9: 3,221,889 km (0.071 R)
• M10: 3,883,860 km (0.114 R)
• M11: 5,066,880 km (0.11 R)
• M12: 5,595,260 km (0.049 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 170.6

Radius: 10.1

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.32 AU - 1.86 AU

Year: 1295 Days

Day: 8.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 29,146,593 km

• M1: 125,662 km (0.116 R)
• M2: 476,918 km (0.103 R)
• M3: 854,952 km (0.111 R)
• M4: 2,200,884 km (0.112 R)
• M5: 3,686,840 km (0.081 R)
• M6: 5,246,397 km (0.119 R)
• M7: 6,593,526 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 879.7

Radius: 9.4

Gravity: 9.96 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 1.49 AU - 2.49 AU

Year: 1813 Days

Day: 15 Hours

Environment

Temp: -195 °C

Axial Tilt: 42.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 29,146,593 km

• M1: 118,033 km (0.104 R)
• M2: 439,369 km (0.099 R)
• M3: 922,720 km (0.1 R)
• M4: 1,344,586 km (0.036 R)
• M5: 1,837,211 km (0.107 R)
• M6: 2,225,717 km (0.077 R)
• M7: 2,569,942 km (0.03 R)
• M8: 3,121,360 km (0.102 R)
• M9: 3,713,917 km (0.108 R)
• M10: 5,679,483 km (0.116 R)
• M11: 6,327,392 km (0.081 R)
• M12: 6,804,310 km (0.086 R)
• M13: 7,191,618 km (0.115 R)
• M14: 7,800,183 km (0.06 R)
• M15: 11,602,512 km (0.081 R)
• M16: 12,196,565 km (0.092 R)
• M17: 12,603,621 km (0.064 R)
• M18: 13,273,969 km (0.08 R)
• M19: 13,923,672 km (0.112 R)
• M20: 15,808,157 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 91.4

Radius: 13.3

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 2.33 AU - 2.99 AU

Year: 2801 Days

Day: 10.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 29,146,593 km

• M1: 179,966 km (0.107 R)
• M2: 692,489 km (0.046 R)
• M3: 1,216,530 km (0.097 R)
• M4: 1,650,364 km (0.099 R)
• M5: 4,678,075 km (0.058 R)
• M6: 5,273,175 km (0.111 R)
• M7: 5,711,348 km (0.067 R)
• M8: 6,304,353 km (0.084 R)
• M9: 8,819,842 km (0.115 R)
• M10: 9,731,192 km (0.069 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 57.6

Radius: 12.7

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 2.79 AU - 3.47 AU

Year: 3575 Days

Day: 12.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 29,146,593 km

• M1: 158,424 km (0.114 R)
• M2: 952,190 km (0.103 R)
• M3: 1,735,784 km (0.072 R)
• M4: 3,086,354 km (0.094 R)
• M5: 3,581,223 km (0.092 R)
• M6: 5,084,084 km (0.052 R)
• M7: 7,553,944 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 470.9

Radius: 7.8

Gravity: 7.74 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 4.91 AU - 7.71 AU

Year: 10234 Days

Day: 20.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 29,146,593 km

• M1: 97,388 km (0.058 R)
• M2: 434,731 km (0.059 R)
• M3: 1,186,311 km (0.054 R)
• M4: 1,781,711 km (0.114 R)
• M5: 2,250,700 km (0.059 R)
• M6: 2,581,461 km (0.1 R)
• M7: 2,840,415 km (0.031 R)
• M8: 3,576,885 km (0.109 R)
• M9: 5,519,713 km (0.099 R)
• M10: 6,442,582 km (0.047 R)
• M11: 9,448,751 km (0.076 R)
• M12: 10,362,495 km (0.119 R)
• M13: 12,087,508 km (0.092 R)
• M14: 14,799,717 km (0.078 R)
• M15: 19,212,406 km (0.089 R)
• M16: 31,974,750 km (0.111 R)
• M17: 32,719,448 km (0.102 R)
• M18: 36,732,560 km (0.107 R)
• M19: 37,197,810 km (0.115 R)
• M20: 37,666,949 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 109.1

Radius: 6.1

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 5.69 AU - 8.25 AU

Year: 11881 Days

Day: 21.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 29,146,593 km

• M1: 75,846 km (0.049 R)
• M2: 557,850 km (0.106 R)
• M3: 1,101,639 km (0.117 R)
• M4: 1,311,674 km (0.117 R)
• M5: 1,853,966 km (0.119 R)
• M6: 2,552,289 km (0.065 R)
• M7: 4,781,746 km (0.081 R)
• M8: 6,107,333 km (0.056 R)
• M9: 7,804,222 km (0.072 R)
• M10: 15,184,483 km (0.119 R)
• M11: 19,752,005 km (0.052 R)
• M12: 22,127,470 km (0.098 R)
• M13: 22,492,189 km (0.118 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 234 - 17,962 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit