🌌 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: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.47 AU - 0.65 AU

Year: 271 Days

Day: 39.3 Hours

Environment

Temp: -117 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.92

Radius: 1.54

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.56 AU - 0.7 AU

Year: 323 Days

Day: 30.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 47.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 597.2

Radius: 13.4

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.92 AU - 1.18 AU

Year: 695 Days

Day: 6 Hours

Environment

Temp: -152 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,206,767 km

• M1: 166,652 km (0.108 R)
• M2: 608,863 km (0.091 R)
• M3: 1,206,956 km (0.112 R)
• M4: 1,868,477 km (0.084 R)
• M5: 2,313,830 km (0.034 R)
• M6: 2,922,694 km (0.057 R)
• M7: 3,477,253 km (0.086 R)
• M8: 5,239,067 km (0.074 R)
• M9: 5,686,365 km (0.119 R)
• M10: 6,178,691 km (0.108 R)
• M11: 7,227,672 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.1

Radius: 14.8

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.97 AU - 1.27 AU

Year: 765 Days

Day: 5.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,206,767 km

• M1: 184,604 km (0.085 R)
• M2: 1,245,402 km (0.111 R)
• M3: 2,091,677 km (0.063 R)
• M4: 2,768,458 km (0.119 R)
• M5: 3,792,007 km (0.06 R)
• M6: 5,512,083 km (0.12 R)
• M7: 6,139,646 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 455.6

Radius: 11.1

Gravity: 3.7 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 1.11 AU - 1.31 AU

Year: 859 Days

Day: 11.3 Hours

Environment

Temp: -167 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 39,206,767 km

• M1: 138,079 km (0.082 R)
• M2: 550,371 km (0.099 R)
• M3: 1,700,928 km (0.115 R)
• M4: 2,536,432 km (0.107 R)
• M5: 4,162,860 km (0.087 R)
• M6: 4,885,717 km (0.12 R)
• M7: 5,485,754 km (0.104 R)
• M8: 7,816,489 km (0.052 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 961.9

Radius: 10.2

Gravity: 9.25 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.4 AU - 2.22 AU

Year: 1572 Days

Day: 12 Hours

Environment

Temp: -185 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 39,206,767 km

• M1: 126,859 km (0.111 R)
• M2: 445,951 km (0.107 R)
• M3: 786,137 km (0.119 R)
• M4: 1,134,401 km (0.07 R)
• M5: 1,484,310 km (0.107 R)
• M6: 2,939,000 km (0.114 R)
• M7: 3,410,383 km (0.118 R)
• M8: 3,787,519 km (0.088 R)
• M9: 4,288,672 km (0.08 R)
• M10: 4,960,665 km (0.119 R)
• M11: 5,561,450 km (0.111 R)
• M12: 5,988,403 km (0.102 R)
• M13: 6,310,337 km (0.072 R)
• M14: 7,658,065 km (0.077 R)
• M15: 9,286,587 km (0.059 R)
• M16: 10,304,750 km (0.08 R)
• M17: 11,208,620 km (0.046 R)
• M18: 11,737,449 km (0.069 R)
• M19: 13,340,540 km (0.1 R)
• M20: 14,724,320 km (0.116 R)
• M21: 15,636,418 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.9

Radius: 12.7

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 2.34 AU - 2.42 AU

Year: 2371 Days

Day: 11 Hours

Environment

Temp: -194 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,206,767 km

• M1: 158,125 km (0.092 R)
• M2: 554,709 km (0.096 R)
• M3: 1,302,848 km (0.089 R)
• M4: 1,817,315 km (0.101 R)
• M5: 2,348,537 km (0.106 R)
• M6: 3,349,048 km (0.111 R)
• M7: 3,946,990 km (0.085 R)
• M8: 4,351,353 km (0.108 R)
• M9: 4,847,420 km (0.117 R)
• M10: 6,281,016 km (0.119 R)
• M11: 7,421,251 km (0.094 R)
• M12: 8,567,769 km (0.057 R)
• M13: 9,933,448 km (0.069 R)
• M14: 12,925,106 km (0.117 R)
• M15: 13,605,926 km (0.081 R)
• M16: 15,178,649 km (0.091 R)
• M17: 16,472,222 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.9

Radius: 9.5

Gravity: 6.38 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.76 AU - 4.44 AU

Year: 4410 Days

Day: 10.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 39,206,767 km

• M1: 118,482 km (0.098 R)
• M2: 461,061 km (0.082 R)
• M3: 829,670 km (0.084 R)
• M4: 1,265,897 km (0.086 R)
• M5: 2,810,046 km (0.114 R)
• M6: 4,459,513 km (0.081 R)
• M7: 5,368,918 km (0.073 R)
• M8: 5,953,995 km (0.039 R)
• M9: 6,458,140 km (0.055 R)
• M10: 6,862,653 km (0.067 R)
• M11: 8,690,140 km (0.111 R)
• M12: 9,857,602 km (0.12 R)
• M13: 10,310,884 km (0.115 R)
• M14: 14,823,503 km (0.116 R)
• M15: 15,917,812 km (0.102 R)
• M16: 16,657,424 km (0.098 R)
• M17: 17,182,662 km (0.084 R)
• M18: 17,479,314 km (0.108 R)
• M19: 17,961,020 km (0.076 R)
• M20: 18,950,909 km (0.083 R)
• M21: 20,173,123 km (0.083 R)
• M22: 20,770,168 km (0.105 R)
• M23: 21,860,438 km (0.081 R)
• M24: 22,490,245 km (0.093 R)
• M25: 23,421,342 km (0.091 R)
• M26: 24,377,871 km (0.081 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839

Radius: 9.6

Gravity: 9.1 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.81 AU - 5.69 AU

Year: 6684 Days

Day: 13 Hours

Environment

Temp: -223 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 39,206,767 km

• M1: 129,701 km (0.05 R)
• M2: 673,340 km (0.114 R)
• M3: 986,598 km (0.087 R)
• M4: 1,388,268 km (0.078 R)
• M5: 1,912,758 km (0.095 R)
• M6: 2,367,386 km (0.055 R)
• M7: 3,517,644 km (0.084 R)
• M8: 3,874,585 km (0.095 R)
• M9: 4,203,551 km (0.037 R)
• M10: 4,889,008 km (0.103 R)
• M11: 5,615,455 km (0.107 R)
• M12: 7,434,565 km (0.058 R)
• M13: 9,167,208 km (0.11 R)
• M14: 10,127,626 km (0.043 R)
• M15: 10,903,441 km (0.078 R)
• M16: 11,204,282 km (0.112 R)
• M17: 12,409,742 km (0.113 R)
• M18: 12,904,163 km (0.059 R)
• M19: 13,354,752 km (0.117 R)
• M20: 14,168,414 km (0.087 R)
• M21: 15,576,429 km (0.029 R)
• M22: 16,347,008 km (0.085 R)
• M23: 18,955,247 km (0.105 R)
• M24: 19,611,383 km (0.038 R)
• M25: 21,123,668 km (0.12 R)
• M26: 23,535,784 km (0.112 R)
• M27: 26,215,232 km (0.112 R)
• M28: 27,954,307 km (0.118 R)
• M29: 29,769,079 km (0.077 R)
• M30: 32,688,481 km (0.067 R)
• M31: 34,163,815 km (0.1 R)
• M32: 38,045,880 km (0.076 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 498 - 16,585 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit