🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.32

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.48 AU - 0.64 AU

Year: 271 Days

Day: 39 Hours

Environment

Temp: -115 °C

Axial Tilt: 32.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.56 AU - 0.78 AU

Year: 354 Days

Day: 45 Hours

Environment

Temp: -137 °C

Axial Tilt: 35.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.7

Radius: 12.1

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.64 AU - 1 AU

Year: 479 Days

Day: 7 Hours

Environment

Temp: -153 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 51,822,736 km

• M1: 153,188 km (0.061 R)
• M2: 561,142 km (0.08 R)
• M3: 1,177,335 km (0.089 R)
• M4: 1,641,089 km (0.101 R)
• M5: 2,043,657 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768.8

Radius: 13.5

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.03 AU - 1.31 AU

Year: 817 Days

Day: 6.5 Hours

Environment

Temp: -164 °C

Axial Tilt: 125.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 51,822,736 km

• M1: 167,849 km (0.117 R)
• M2: 895,194 km (0.084 R)
• M3: 2,031,090 km (0.1 R)
• M4: 2,616,916 km (0.077 R)
• M5: 3,549,359 km (0.096 R)
• M6: 4,069,810 km (0.103 R)
• M7: 4,727,143 km (0.09 R)
• M8: 5,321,795 km (0.097 R)
• M9: 6,640,350 km (0.08 R)
• M10: 7,341,216 km (0.06 R)
• M11: 8,166,398 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.7

Radius: 15

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.99 AU - 2.19 AU

Year: 1951 Days

Day: 6.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 51,822,736 km

• M1: 186,549 km (0.046 R)
• M2: 728,691 km (0.095 R)
• M3: 1,290,431 km (0.071 R)
• M4: 1,947,016 km (0.085 R)
• M5: 3,099,817 km (0.092 R)
• M6: 4,712,483 km (0.075 R)
• M7: 5,500,265 km (0.027 R)
• M8: 6,667,727 km (0.06 R)
• M9: 7,253,253 km (0.091 R)
• M10: 8,656,780 km (0.114 R)
• M11: 9,700,375 km (0.071 R)
• M12: 10,307,443 km (0.078 R)
• M13: 11,836,632 km (0.094 R)
• M14: 13,251,529 km (0.109 R)
• M15: 14,683,629 km (0.066 R)
• M16: 15,151,871 km (0.113 R)
• M17: 17,435,183 km (0.056 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.1

Radius: 10.8

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.02 AU - 3.16 AU

Year: 3507 Days

Day: 6.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 51,822,736 km

• M1: 140,024 km (0.054 R)
• M2: 590,164 km (0.096 R)
• M3: 1,352,514 km (0.062 R)
• M4: 1,706,463 km (0.119 R)
• M5: 2,517,283 km (0.11 R)
• M6: 4,911,896 km (0.114 R)
• M7: 5,504,454 km (0.064 R)
• M8: 5,844,789 km (0.033 R)
• M9: 7,072,987 km (0.047 R)
• M10: 8,328,712 km (0.042 R)
• M11: 9,577,405 km (0.073 R)
• M12: 14,510,844 km (0.073 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.41 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 788.4

Radius: 3.2

Gravity: 76.99 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 6.09 AU - 6.73 AU

Year: 10479 Days

Day: 22.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 51,822,736 km

• M1: 40,242 km (0.106 R)
• M2: 236,365 km (0.112 R)
• M3: 447,896 km (0.075 R)
• M4: 645,515 km (0.059 R)
• M5: 971,040 km (0.11 R)
• M6: 1,883,886 km (0.093 R)
• M7: 2,557,824 km (0.099 R)
• M8: 3,231,164 km (0.094 R)
• M9: 3,687,588 km (0.113 R)
• M10: 3,821,777 km (0.045 R)
• M11: 3,931,432 km (0.056 R)
• M12: 4,302,136 km (0.101 R)
• M13: 7,533,001 km (0.08 R)
• M14: 7,836,684 km (0.103 R)
• M15: 8,844,525 km (0.105 R)
• M16: 10,195,544 km (0.119 R)
• M17: 11,851,443 km (0.08 R)
• M18: 13,236,120 km (0.101 R)
• M19: 14,195,192 km (0.118 R)
• M20: 15,268,108 km (0.101 R)
• M21: 15,965,534 km (0.113 R)
• M22: 16,393,982 km (0.105 R)
• M23: 18,651,863 km (0.115 R)
• M24: 20,267,071 km (0.034 R)
• M25: 25,667,853 km (0.093 R)
• M26: 29,011,066 km (0.036 R)
• M27: 31,394,160 km (0.079 R)
• M28: 31,728,960 km (0.105 R)
• M29: 32,066,004 km (0.058 R)
• M30: 35,328,435 km (0.099 R)
• M31: 36,299,624 km (0.111 R)
• M32: 37,163,851 km (0.098 R)
• M33: 37,663,807 km (0.117 R)
• M34: 40,231,206 km (0.109 R)
• M35: 40,626,144 km (0.069 R)
• M36: 42,503,149 km (0.06 R)
• M37: 44,437,150 km (0.11 R)
• M38: 46,429,046 km (0.105 R)
• M39: 47,887,774 km (0.117 R)
• M40: 48,926,881 km (0.119 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 469 - 17,905 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit