🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.12

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.54 AU - 0.72 AU

Year: 318 Days

Day: 21 Hours

Environment

Temp: -134 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,315,858 km

• M1: 58,792 km (0.081 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.66 AU - 0.68 AU

Year: 349 Days

Day: 38.5 Hours

Environment

Temp: -133 °C

Axial Tilt: 13.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 558.6

Radius: 13.2

Gravity: 3.21 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.83 AU - 1.03 AU

Year: 570 Days

Day: 8.4 Hours

Environment

Temp: -145 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 77,315,858 km

• M1: 164,109 km (0.077 R)
• M2: 657,333 km (0.115 R)
• M3: 1,211,593 km (0.091 R)
• M4: 2,743,775 km (0.039 R)
• M5: 3,282,177 km (0.111 R)
• M6: 3,944,597 km (0.117 R)
• M7: 4,380,974 km (0.11 R)
• M8: 5,219,021 km (0.04 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 304.7

Radius: 8.2

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.95 AU - 1.05 AU

Year: 636 Days

Day: 14.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 77,315,858 km

• M1: 102,026 km (0.095 R)
• M2: 418,724 km (0.118 R)
• M3: 839,543 km (0.057 R)
• M4: 1,196,334 km (0.114 R)
• M5: 1,561,353 km (0.103 R)
• M6: 2,293,335 km (0.113 R)
• M7: 2,615,868 km (0.106 R)
• M8: 2,904,143 km (0.111 R)
• M9: 3,757,300 km (0.119 R)
• M10: 4,139,223 km (0.077 R)
• M11: 5,058,652 km (0.042 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 98.3

Radius: 14.2

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.2 AU - 1.54 AU

Year: 1020 Days

Day: 9.4 Hours

Environment

Temp: -177 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 77,315,858 km

• M1: 176,525 km (0.088 R)
• M2: 741,108 km (0.08 R)
• M3: 1,270,684 km (0.085 R)
• M4: 1,979,030 km (0.116 R)
• M5: 2,711,162 km (0.074 R)
• M6: 3,229,220 km (0.097 R)
• M7: 3,776,299 km (0.098 R)
• M8: 4,290,467 km (0.102 R)
• M9: 5,476,778 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.7

Radius: 12.5

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.28 AU - 1.96 AU

Year: 1311 Days

Day: 5.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 77,315,858 km

• M1: 155,432 km (0.077 R)
• M2: 582,684 km (0.104 R)
• M3: 1,121,386 km (0.102 R)
• M4: 1,757,326 km (0.028 R)
• M5: 3,066,607 km (0.11 R)
• M6: 4,518,753 km (0.115 R)
• M7: 5,500,115 km (0.088 R)
• M8: 7,520,883 km (0.032 R)
• M9: 8,229,828 km (0.117 R)
• M10: 10,951,611 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 473.4

Radius: 11.7

Gravity: 3.46 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.72 AU - 2.72 AU

Year: 2103 Days

Day: 13.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 77,315,858 km

• M1: 145,858 km (0.108 R)
• M2: 562,488 km (0.115 R)
• M3: 934,388 km (0.12 R)
• M4: 1,817,913 km (0.063 R)
• M5: 2,208,364 km (0.1 R)
• M6: 3,448,381 km (0.086 R)
• M7: 3,856,633 km (0.07 R)
• M8: 4,510,077 km (0.075 R)
• M9: 6,457,093 km (0.099 R)
• M10: 7,080,916 km (0.104 R)
• M11: 7,659,261 km (0.098 R)
• M12: 8,388,850 km (0.105 R)
• M13: 9,068,473 km (0.094 R)
• M14: 10,259,721 km (0.074 R)
• M15: 12,199,407 km (0.094 R)
• M16: 13,565,834 km (0.034 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 573.9

Radius: 8.9

Gravity: 7.25 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 3.18 AU - 3.6 AU

Year: 3969 Days

Day: 8.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 77,315,858 km

• M1: 114,293 km (0.087 R)
• M2: 467,942 km (0.042 R)
• M3: 834,307 km (0.057 R)
• M4: 1,234,631 km (0.1 R)
• M5: 1,596,508 km (0.11 R)
• M6: 2,001,919 km (0.11 R)
• M7: 2,368,882 km (0.117 R)
• M8: 2,813,936 km (0.088 R)
• M9: 3,448,081 km (0.094 R)
• M10: 3,809,659 km (0.099 R)
• M11: 5,928,264 km (0.088 R)
• M12: 6,213,847 km (0.067 R)
• M13: 6,538,624 km (0.092 R)
• M14: 10,399,894 km (0.088 R)
• M15: 12,224,540 km (0.107 R)
• M16: 13,260,954 km (0.087 R)
• M17: 14,871,524 km (0.109 R)
• M18: 16,217,606 km (0.115 R)
• M19: 17,178,174 km (0.046 R)
• M20: 19,587,148 km (0.106 R)
• M21: 21,268,628 km (0.069 R)
• M22: 22,695,343 km (0.094 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 48.9

Radius: 9.9

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 3.37 AU - 5.47 AU

Year: 5908 Days

Day: 13.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 77,315,858 km

• M1: 128,355 km (0.041 R)
• M2: 441,015 km (0.043 R)
• M3: 878,588 km (0.086 R)
• M4: 1,188,405 km (0.051 R)
• M5: 1,536,520 km (0.069 R)
• M6: 2,858,965 km (0.118 R)
• M7: 4,603,276 km (0.109 R)
• M8: 5,477,526 km (0.079 R)
• M9: 6,633,020 km (0.084 R)
• M10: 7,915,672 km (0.049 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 913.2

Radius: 3

Gravity: 101.47 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 8.08 AU - 10.32 AU

Year: 17743 Days

Day: 20.7 Hours

Environment

Temp: -235 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 77,315,858 km

• M1: 37,399 km (0.099 R)
• M2: 451,486 km (0.113 R)
• M3: 567,425 km (0.066 R)
• M4: 989,889 km (0.09 R)
• M5: 1,118,992 km (0.103 R)
• M6: 2,317,271 km (0.09 R)
• M7: 2,690,069 km (0.094 R)
• M8: 5,020,355 km (0.11 R)
• M9: 5,969,703 km (0.094 R)
• M10: 7,857,479 km (0.025 R)
• M11: 10,108,478 km (0.115 R)
• M12: 11,412,522 km (0.094 R)
• M13: 13,681,473 km (0.076 R)
• M14: 13,975,433 km (0.115 R)
• M15: 15,908,686 km (0.095 R)
• M16: 16,070,701 km (0.106 R)
• M17: 19,917,909 km (0.117 R)
• M18: 21,753,475 km (0.091 R)
• M19: 21,953,039 km (0.102 R)
• M20: 24,229,170 km (0.119 R)
• M21: 27,813,236 km (0.084 R)
• M22: 38,428,701 km (0.108 R)
• M23: 38,574,409 km (0.107 R)
• M24: 40,350,435 km (0.105 R)
• M25: 58,657,026 km (0.096 R)
• M26: 66,503,434 km (0.092 R)
• M27: 67,557,351 km (0.111 R)
• M28: 72,548,834 km (0.083 R)
• M29: 73,217,536 km (0.051 R)
• M30: 76,853,064 km (0.12 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: 386 - 13,828 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit