🌌 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: 4.24

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.5 AU - 0.61 AU

Year: 259 Days

Day: 21 Hours

Environment

Temp: -131 °C

Axial Tilt: 5.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.58 AU - 0.64 AU

Year: 303 Days

Day: 18.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 20.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279.7

Radius: 9.8

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.72 AU - 1.08 AU

Year: 543 Days

Day: 8.6 Hours

Environment

Temp: -146 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,676,462 km

• M1: 121,922 km (0.095 R)
• M2: 628,760 km (0.076 R)
• M3: 954,434 km (0.091 R)
• M4: 1,354,459 km (0.083 R)
• M5: 1,679,685 km (0.077 R)
• M6: 2,376,213 km (0.111 R)
• M7: 3,103,258 km (0.111 R)
• M8: 3,583,019 km (0.103 R)
• M9: 4,111,847 km (0.091 R)
• M10: 4,566,176 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645.7

Radius: 10.6

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.89 AU - 2.45 AU

Year: 2032 Days

Day: 14.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 51,676,462 km

• M1: 133,142 km (0.116 R)
• M2: 566,976 km (0.11 R)
• M3: 1,080,396 km (0.118 R)
• M4: 1,571,077 km (0.113 R)
• M5: 1,925,175 km (0.073 R)
• M6: 2,294,682 km (0.076 R)
• M7: 3,007,516 km (0.097 R)
• M8: 3,789,613 km (0.105 R)
• M9: 6,298,220 km (0.116 R)
• M10: 7,039,627 km (0.038 R)
• M11: 9,213,434 km (0.072 R)
• M12: 9,649,063 km (0.102 R)
• M13: 9,993,437 km (0.085 R)
• M14: 10,706,869 km (0.114 R)
• M15: 11,646,045 km (0.075 R)
• M16: 13,731,140 km (0.107 R)
• M17: 14,433,801 km (0.084 R)
• M18: 14,839,361 km (0.113 R)
• M19: 16,101,967 km (0.074 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 921.7

Radius: 3.7

Gravity: 67.33 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 5.95 AU - 8.93 AU

Year: 12903 Days

Day: 16.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 51,676,462 km

• M1: 46,076 km (0.097 R)
• M2: 221,704 km (0.086 R)
• M3: 713,283 km (0.083 R)
• M4: 901,626 km (0.118 R)
• M5: 1,060,948 km (0.101 R)
• M6: 1,186,162 km (0.057 R)
• M7: 1,378,096 km (0.117 R)
• M8: 1,543,102 km (0.064 R)
• M9: 2,423,336 km (0.1 R)
• M10: 2,687,227 km (0.049 R)
• M11: 2,849,839 km (0.118 R)
• M12: 3,298,334 km (0.099 R)
• M13: 3,937,865 km (0.104 R)
• M14: 4,789,525 km (0.115 R)
• M15: 6,890,777 km (0.102 R)
• M16: 8,310,760 km (0.095 R)
• M17: 9,805,392 km (0.071 R)
• M18: 10,473,197 km (0.053 R)
• M19: 11,052,291 km (0.117 R)
• M20: 14,411,810 km (0.032 R)
• M21: 15,127,636 km (0.119 R)
• M22: 16,785,180 km (0.08 R)
• M23: 18,560,009 km (0.096 R)
• M24: 21,727,445 km (0.096 R)
• M25: 21,913,246 km (0.09 R)
• M26: 23,535,934 km (0.103 R)
• M27: 32,618,021 km (0.075 R)
• M28: 36,401,799 km (0.058 R)
• M29: 40,608,492 km (0.064 R)
• M30: 44,377,161 km (0.115 R)
• M31: 45,278,788 km (0.082 R)
• M32: 48,689,320 km (0.091 R)
• M33: 52,266,953 km (0.062 R)
• M34: 52,935,805 km (0.09 R)
• M35: 58,852,401 km (0.114 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 383.4

Radius: 3.9

Gravity: 25.21 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 6.62 AU - 8.54 AU

Year: 13269 Days

Day: 18.9 Hours

Environment

Temp: -234 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 51,676,462 km

• M1: 48,919 km (0.104 R)
• M2: 196,871 km (0.104 R)
• M3: 515,514 km (0.063 R)
• M4: 793,018 km (0.099 R)
• M5: 1,028,785 km (0.1 R)
• M6: 1,234,930 km (0.081 R)
• M7: 1,669,213 km (0.106 R)
• M8: 1,904,830 km (0.116 R)
• M9: 2,109,031 km (0.119 R)
• M10: 2,290,343 km (0.073 R)
• M11: 2,767,710 km (0.11 R)
• M12: 3,052,694 km (0.109 R)
• M13: 3,758,347 km (0.11 R)
• M14: 5,155,292 km (0.065 R)
• M15: 5,518,366 km (0.099 R)
• M16: 6,040,612 km (0.12 R)
• M17: 6,787,255 km (0.083 R)
• M18: 7,102,458 km (0.103 R)
• M19: 7,468,674 km (0.089 R)
• M20: 8,282,935 km (0.103 R)
• M21: 8,461,704 km (0.115 R)
• M22: 10,341,102 km (0.102 R)
• M23: 12,020,339 km (0.112 R)
• M24: 12,249,373 km (0.037 R)
• M25: 17,103,225 km (0.089 R)
• M26: 17,908,212 km (0.052 R)
• M27: 23,187,072 km (0.118 R)
• M28: 27,196,295 km (0.12 R)
• M29: 28,089,992 km (0.055 R)
• M30: 28,392,329 km (0.107 R)
• M31: 32,632,083 km (0.101 R)
• M32: 39,879,651 km (0.083 R)
• M33: 42,603,379 km (0.084 R)
• M34: 44,350,084 km (0.119 R)
• M35: 46,988,093 km (0.091 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 404

Radius: 3.9

Gravity: 26.56 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 7.89 AU - 8.25 AU

Year: 14576 Days

Day: 22.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 51,676,462 km

• M1: 51,312 km (0.08 R)
• M2: 386,112 km (0.098 R)
• M3: 845,527 km (0.062 R)
• M4: 1,122,134 km (0.107 R)
• M5: 2,095,717 km (0.069 R)
• M6: 2,926,434 km (0.103 R)
• M7: 3,956,116 km (0.084 R)
• M8: 4,357,038 km (0.1 R)
• M9: 6,048,392 km (0.085 R)
• M10: 6,697,497 km (0.105 R)
• M11: 9,409,706 km (0.103 R)
• M12: 10,121,792 km (0.026 R)
• M13: 14,161,533 km (0.12 R)
• M14: 17,305,482 km (0.107 R)
• M15: 22,533,478 km (0.055 R)
• M16: 25,310,314 km (0.046 R)
• M17: 34,516,717 km (0.085 R)
• M18: 41,844,320 km (0.057 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 225 - 14,679 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit