🌌 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: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.48 AU - 0.54 AU

Year: 235 Days

Day: 12.7 Hours

Environment

Temp: -111 °C

Axial Tilt: 39.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.67

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.51 AU - 0.63 AU

Year: 278 Days

Day: 24.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 8.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.53 AU - 0.63 AU

Year: 285 Days

Day: 45.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 29.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 25.5

Radius: 12.3

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.71 AU - 1.15 AU

Year: 579 Days

Day: 11.4 Hours

Environment

Temp: -147 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 47,198,085 km

• M1: 153,039 km (0.08 R)
• M2: 625,319 km (0.062 R)
• M3: 1,156,990 km (0.117 R)
• M4: 1,619,547 km (0.057 R)
• M5: 2,276,580 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 669

Radius: 11.5

Gravity: 5.06 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.77 AU - 1.21 AU

Year: 636 Days

Day: 13.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,198,085 km

• M1: 143,016 km (0.104 R)
• M2: 608,265 km (0.085 R)
• M3: 2,137,903 km (0.094 R)
• M4: 2,627,986 km (0.062 R)
• M5: 3,167,885 km (0.036 R)
• M6: 3,808,463 km (0.039 R)
• M7: 5,157,686 km (0.099 R)
• M8: 5,819,656 km (0.106 R)
• M9: 6,397,104 km (0.114 R)
• M10: 6,928,177 km (0.048 R)
• M11: 7,313,092 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.8

Radius: 14.7

Gravity: 1.85 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 1.38 AU - 1.4 AU

Year: 1058 Days

Day: 11 Hours

Environment

Temp: -183 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 47,198,085 km

• M1: 182,958 km (0.048 R)
• M2: 757,863 km (0.119 R)
• M3: 1,411,157 km (0.104 R)
• M4: 2,884,995 km (0.091 R)
• M5: 3,628,945 km (0.101 R)
• M6: 5,027,087 km (0.1 R)
• M7: 5,869,323 km (0.107 R)
• M8: 6,587,841 km (0.103 R)
• M9: 7,980,448 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443

Radius: 12.5

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 2.01 AU - 2.01 AU

Year: 1840 Days

Day: 10.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,198,085 km

• M1: 155,432 km (0.11 R)
• M2: 593,904 km (0.081 R)
• M3: 1,395,748 km (0.081 R)
• M4: 1,955,244 km (0.082 R)
• M5: 3,453,766 km (0.05 R)
• M6: 4,106,162 km (0.057 R)
• M7: 4,959,618 km (0.085 R)
• M8: 6,640,649 km (0.116 R)
• M9: 7,043,816 km (0.054 R)
• M10: 7,490,066 km (0.099 R)
• M11: 9,280,304 km (0.115 R)
• M12: 9,753,332 km (0.055 R)
• M13: 11,411,774 km (0.09 R)
• M14: 12,440,110 km (0.036 R)
• M15: 13,409,504 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.7

Radius: 10.7

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 2.42 AU - 3.08 AU

Year: 2945 Days

Day: 13.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 41.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 47,198,085 km

• M1: 176,226 km (0.117 R)
• M2: 569,220 km (0.073 R)
• M3: 1,428,360 km (0.032 R)
• M4: 2,558,423 km (0.075 R)
• M5: 3,190,025 km (0.12 R)
• M6: 3,725,885 km (0.087 R)
• M7: 5,902,534 km (0.028 R)
• M8: 6,427,323 km (0.094 R)
• M9: 7,765,476 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 155

Radius: 3.3

Gravity: 14.23 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 8.73 AU - 11.35 AU

Year: 20541 Days

Day: 18.4 Hours

Environment

Temp: -235 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 47,198,085 km

• M1: 40,990 km (0.119 R)
• M2: 167,699 km (0.109 R)
• M3: 813,812 km (0.058 R)
• M4: 1,121,236 km (0.118 R)
• M5: 1,227,151 km (0.059 R)
• M6: 1,630,168 km (0.112 R)
• M7: 2,881,554 km (0.075 R)
• M8: 3,036,538 km (0.039 R)
• M9: 3,816,541 km (0.12 R)
• M10: 4,057,992 km (0.098 R)
• M11: 5,487,699 km (0.105 R)
• M12: 6,186,770 km (0.068 R)
• M13: 6,982,481 km (0.081 R)
• M14: 7,716,857 km (0.044 R)
• M15: 10,535,580 km (0.054 R)
• M16: 11,832,444 km (0.094 R)
• M17: 16,077,732 km (0.12 R)
• M18: 28,191,270 km (0.079 R)
• M19: 28,797,441 km (0.115 R)
• M20: 31,958,593 km (0.042 R)
• M21: 32,286,960 km (0.062 R)
• M22: 35,812,085 km (0.071 R)
• M23: 37,727,985 km (0.07 R)
• M24: 38,835,158 km (0.109 R)
• M25: 39,711,054 km (0.111 R)
• M26: 41,372,638 km (0.081 R)
• M27: 44,560,867 km (0.086 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: 309 - 15,344 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit