🌌 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: 0.5

Radius: 0.76

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.45 AU - 0.65 AU

Year: 263 Days

Day: 34 Hours

Environment

Temp: -114 °C

Axial Tilt: 21.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,389,305 km

• M1: 106,663 km (0.095 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.58 AU - 0.76 AU

Year: 354 Days

Day: 23.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 25.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 962.9

Radius: 13.5

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.67 AU - 0.83 AU

Year: 419 Days

Day: 14.4 Hours

Environment

Temp: -146 °C

Axial Tilt: 147.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,389,305 km

• M1: 167,849 km (0.102 R)
• M2: 720,463 km (0.034 R)
• M3: 1,337,106 km (0.064 R)
• M4: 1,846,337 km (0.1 R)
• M5: 2,287,351 km (0.097 R)
• M6: 2,961,290 km (0.054 R)
• M7: 3,950,132 km (0.051 R)
• M8: 4,663,863 km (0.067 R)
• M9: 5,428,608 km (0.071 R)
• M10: 6,368,381 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 429.3

Radius: 9.7

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.73 AU - 1.19 AU

Year: 607 Days

Day: 6.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 64,389,305 km

• M1: 120,576 km (0.062 R)
• M2: 464,501 km (0.084 R)
• M3: 883,824 km (0.087 R)
• M4: 1,253,929 km (0.119 R)
• M5: 1,932,505 km (0.107 R)
• M6: 2,336,420 km (0.082 R)
• M7: 2,660,449 km (0.114 R)
• M8: 3,256,297 km (0.066 R)
• M9: 3,599,026 km (0.074 R)
• M10: 4,271,318 km (0.035 R)
• M11: 4,652,943 km (0.115 R)
• M12: 5,186,259 km (0.1 R)
• M13: 6,153,110 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 947.4

Radius: 13.8

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.04 AU - 1.16 AU

Year: 745 Days

Day: 10.9 Hours

Environment

Temp: -168 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 64,389,305 km

• M1: 171,589 km (0.109 R)
• M2: 615,595 km (0.05 R)
• M3: 1,185,414 km (0.1 R)
• M4: 1,649,616 km (0.075 R)
• M5: 2,176,799 km (0.111 R)
• M6: 2,697,549 km (0.115 R)
• M7: 3,142,303 km (0.114 R)
• M8: 3,607,702 km (0.118 R)
• M9: 4,576,947 km (0.06 R)
• M10: 5,479,620 km (0.092 R)
• M11: 6,076,217 km (0.07 R)
• M12: 6,782,319 km (0.076 R)
• M13: 7,711,022 km (0.04 R)
• M14: 9,233,779 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 194.8

Radius: 8.2

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 2.84 AU - 2.94 AU

Year: 3172 Days

Day: 8 Hours

Environment

Temp: -212 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,389,305 km

• M1: 102,026 km (0.08 R)
• M2: 464,501 km (0.111 R)
• M3: 753,375 km (0.026 R)
• M4: 1,105,379 km (0.062 R)
• M5: 1,662,332 km (0.119 R)
• M6: 3,246,872 km (0.087 R)
• M7: 3,847,508 km (0.081 R)
• M8: 4,212,078 km (0.105 R)
• M9: 6,826,749 km (0.088 R)
• M10: 10,609,930 km (0.079 R)
• M11: 14,530,740 km (0.095 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 244.7

Radius: 10

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 2.32 AU - 3.64 AU

Year: 3322 Days

Day: 8.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,389,305 km

• M1: 124,316 km (0.075 R)
• M2: 565,779 km (0.058 R)
• M3: 898,634 km (0.105 R)
• M4: 1,273,078 km (0.119 R)
• M5: 1,589,627 km (0.071 R)
• M6: 1,948,363 km (0.08 R)
• M7: 2,631,127 km (0.057 R)
• M8: 3,075,134 km (0.077 R)
• M9: 3,415,319 km (0.096 R)
• M10: 3,926,645 km (0.114 R)
• M11: 4,694,082 km (0.113 R)
• M12: 6,091,177 km (0.094 R)
• M13: 6,926,232 km (0.026 R)
• M14: 7,747,375 km (0.117 R)
• M15: 9,514,724 km (0.062 R)
• M16: 11,613,283 km (0.119 R)
• M17: 12,043,526 km (0.093 R)
• M18: 14,091,072 km (0.062 R)
• M19: 14,716,391 km (0.094 R)
• M20: 16,166,743 km (0.099 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.4

Radius: 14.6

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 3.02 AU - 3.14 AU

Year: 3490 Days

Day: 12.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 64,389,305 km

• M1: 183,108 km (0.056 R)
• M2: 701,315 km (0.096 R)
• M3: 1,410,558 km (0.113 R)
• M4: 2,063,852 km (0.12 R)
• M5: 2,534,637 km (0.054 R)
• M6: 4,132,192 km (0.059 R)
• M7: 4,621,078 km (0.092 R)
• M8: 5,292,922 km (0.03 R)
• M9: 6,029,243 km (0.087 R)
• M10: 6,548,198 km (0.077 R)
• M11: 7,551,701 km (0.105 R)
• M12: 8,026,075 km (0.028 R)
• M13: 8,520,347 km (0.053 R)
• M14: 9,827,383 km (0.049 R)
• M15: 10,317,017 km (0.115 R)
• M16: 13,699,724 km (0.072 R)
• M17: 14,264,157 km (0.094 R)
• M18: 15,439,847 km (0.072 R)
• M19: 16,679,265 km (0.111 R)
• M20: 17,984,058 km (0.081 R)
• M21: 18,776,029 km (0.041 R)
• M22: 19,473,155 km (0.114 R)
• M23: 20,007,369 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 526.8

Radius: 3.4

Gravity: 45.57 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 9.04 AU - 9.18 AU

Year: 17754 Days

Day: 18.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 64,389,305 km

• M1: 42,336 km (0.116 R)
• M2: 204,201 km (0.109 R)
• M3: 456,274 km (0.109 R)
• M4: 613,052 km (0.048 R)
• M5: 1,121,834 km (0.097 R)
• M6: 1,977,833 km (0.071 R)
• M7: 2,527,007 km (0.089 R)
• M8: 3,223,086 km (0.04 R)
• M9: 3,545,320 km (0.119 R)
• M10: 7,612,587 km (0.098 R)
• M11: 7,941,702 km (0.1 R)
• M12: 8,280,242 km (0.095 R)
• M13: 8,729,485 km (0.068 R)
• M14: 10,344,394 km (0.119 R)
• M15: 11,958,854 km (0.117 R)
• M16: 16,132,036 km (0.052 R)
• M17: 20,543,976 km (0.06 R)
• M18: 22,493,835 km (0.071 R)
• M19: 24,971,625 km (0.114 R)
• M20: 29,076,740 km (0.036 R)
• M21: 29,190,434 km (0.098 R)
• M22: 29,533,462 km (0.103 R)
• M23: 30,343,983 km (0.058 R)
• M24: 31,050,534 km (0.045 R)
• M25: 32,987,976 km (0.112 R)
• M26: 35,004,555 km (0.049 R)
• M27: 35,912,016 km (0.096 R)
• M28: 41,400,463 km (0.058 R)
• M29: 43,149,711 km (0.073 R)
• M30: 59,134,094 km (0.098 R)
• M31: 60,790,740 km (0.085 R)
• M32: 60,976,690 km (0.051 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 234 - 13,022 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit