🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.43 AU - 0.63 AU

Year: 253 Days

Day: 34.9 Hours

Environment

Temp: -129 °C

Axial Tilt: 24.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 34,085,132 km

• M1: 20,495 km (0.12 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.56 AU - 0.62 AU

Year: 297 Days

Day: 36.3 Hours

Environment

Temp: -133 °C

Axial Tilt: 15.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.8

Radius: 10.2

Gravity: 8.99 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.66 AU - 0.76 AU

Year: 392 Days

Day: 9.9 Hours

Environment

Temp: -137 °C

Axial Tilt: 48.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,085,132 km

• M1: 127,308 km (0.113 R)
• M2: 446,550 km (0.101 R)
• M3: 1,027,139 km (0.106 R)
• M4: 1,546,094 km (0.045 R)
• M5: 2,389,976 km (0.071 R)
• M6: 2,872,130 km (0.102 R)
• M7: 3,640,315 km (0.112 R)
• M8: 4,394,587 km (0.046 R)
• M9: 5,073,612 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 37.9

Radius: 15

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.81 AU - 0.99 AU

Year: 560 Days

Day: 12.8 Hours

Environment

Temp: -161 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 34,085,132 km

• M1: 186,698 km (0.025 R)
• M2: 666,907 km (0.098 R)
• M3: 1,146,219 km (0.11 R)
• M4: 1,644,978 km (0.09 R)
• M5: 2,259,077 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 45

Radius: 11.5

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.81 AU - 1.27 AU

Year: 696 Days

Day: 10.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 34,085,132 km

• M1: 143,016 km (0.07 R)
• M2: 520,152 km (0.113 R)
• M3: 895,942 km (0.106 R)
• M4: 2,326,396 km (0.085 R)
• M5: 2,708,619 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61.5

Radius: 11.8

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.84 AU - 2.04 AU

Year: 1773 Days

Day: 12.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 34,085,132 km

• M1: 146,756 km (0.072 R)
• M2: 758,611 km (0.086 R)
• M3: 1,190,051 km (0.06 R)
• M4: 2,468,514 km (0.063 R)
• M5: 2,875,570 km (0.07 R)
• M6: 3,880,868 km (0.052 R)
• M7: 4,465,048 km (0.067 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899.2

Radius: 8.2

Gravity: 13.37 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 2.71 AU - 3.61 AU

Year: 3685 Days

Day: 14.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 34,085,132 km

• M1: 102,475 km (0.076 R)
• M2: 357,988 km (0.119 R)
• M3: 619,335 km (0.068 R)
• M4: 887,265 km (0.055 R)
• M5: 1,981,424 km (0.096 R)
• M6: 2,268,652 km (0.109 R)
• M7: 2,534,637 km (0.028 R)
• M8: 3,283,075 km (0.051 R)
• M9: 4,080,282 km (0.098 R)
• M10: 4,357,337 km (0.094 R)
• M11: 4,821,539 km (0.102 R)
• M12: 5,677,688 km (0.117 R)
• M13: 7,346,901 km (0.064 R)
• M14: 8,626,860 km (0.081 R)
• M15: 9,359,441 km (0.092 R)
• M16: 10,556,523 km (0.082 R)
• M17: 11,621,959 km (0.116 R)
• M18: 11,992,513 km (0.103 R)
• M19: 12,466,888 km (0.106 R)
• M20: 13,656,191 km (0.114 R)
• M21: 15,635,521 km (0.112 R)
• M22: 17,255,217 km (0.046 R)
• M23: 21,302,886 km (0.085 R)
• M24: 22,210,347 km (0.09 R)
• M25: 23,070,684 km (0.059 R)
• M26: 23,953,013 km (0.028 R)
• M27: 25,164,307 km (0.064 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 628.1

Radius: 9.3

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 3.62 AU - 5.38 AU

Year: 6262 Days

Day: 6.5 Hours

Environment

Temp: -210 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 34,085,132 km

• M1: 115,789 km (0.106 R)
• M2: 507,735 km (0.091 R)
• M3: 806,781 km (0.07 R)
• M4: 2,241,126 km (0.099 R)
• M5: 2,873,326 km (0.036 R)
• M6: 3,400,659 km (0.075 R)
• M7: 3,990,972 km (0.047 R)
• M8: 4,568,869 km (0.105 R)
• M9: 4,919,676 km (0.109 R)
• M10: 5,985,860 km (0.086 R)
• M11: 7,163,494 km (0.113 R)
• M12: 8,329,609 km (0.032 R)
• M13: 10,424,129 km (0.041 R)
• M14: 10,749,654 km (0.059 R)
• M15: 11,917,565 km (0.119 R)
• M16: 12,900,722 km (0.082 R)
• M17: 13,548,780 km (0.094 R)
• M18: 13,936,837 km (0.067 R)
• M19: 14,619,153 km (0.063 R)
• M20: 15,989,170 km (0.06 R)
• M21: 17,119,681 km (0.097 R)
• M22: 19,538,978 km (0.061 R)
• M23: 20,249,568 km (0.077 R)
• M24: 26,567,235 km (0.086 R)
• M25: 28,873,885 km (0.084 R)
• M26: 31,697,545 km (0.088 R)
• M27: 33,176,170 km (0.081 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: 401 - 12,713 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit