🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.46 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.91 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.91

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.82 AU - 1 AU

Year: 320 Days

Day: 30.9 Hours

Environment

Temp: 146 °C

Axial Tilt: 10.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.15 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.14 AU - 1.16 AU

Year: 455 Days

Day: 44.5 Hours

Environment

Temp: -9 °C

Axial Tilt: 42.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.15 AU - 1.33 AU

Year: 509 Days

Day: 12.3 Hours

Environment

Temp: -3 °C

Axial Tilt: 93.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 78,983,494 km

• M1: 45,478 km (0.057 R)
• M2: 89,310 km (0.06 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.42

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 1.23 AU - 1.63 AU

Year: 631 Days

Day: 21.7 Hours

Environment

Temp: -30 °C

Axial Tilt: 23.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 78,983,494 km

• M1: 126,111 km (0.041 R)
• M2: 500,854 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 737.4

Radius: 8.9

Gravity: 9.31 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 4.19 AU - 5.85 AU

Year: 4150 Days

Day: 14.3 Hours

Environment

Temp: -133 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 78,983,494 km

• M1: 110,702 km (0.032 R)
• M2: 388,805 km (0.107 R)
• M3: 1,199,625 km (0.108 R)
• M4: 1,788,293 km (0.066 R)
• M5: 2,070,285 km (0.079 R)
• M6: 2,674,810 km (0.077 R)
• M7: 3,432,224 km (0.1 R)
• M8: 4,027,175 km (0.048 R)
• M9: 4,492,873 km (0.063 R)
• M10: 5,366,973 km (0.11 R)
• M11: 5,786,894 km (0.101 R)
• M12: 6,535,482 km (0.111 R)
• M13: 7,830,252 km (0.085 R)
• M14: 9,091,811 km (0.03 R)
• M15: 9,487,347 km (0.089 R)
• M16: 10,483,819 km (0.119 R)
• M17: 11,366,147 km (0.085 R)
• M18: 11,779,037 km (0.081 R)
• M19: 13,891,359 km (0.096 R)
• M20: 14,416,597 km (0.115 R)
• M21: 14,846,392 km (0.116 R)
• M22: 16,592,648 km (0.093 R)
• M23: 17,364,124 km (0.096 R)
• M24: 20,087,104 km (0.032 R)
• M25: 20,758,799 km (0.113 R)
• M26: 22,218,276 km (0.065 R)
• M27: 22,864,239 km (0.084 R)
• M28: 27,331,232 km (0.049 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 781.4

Radius: 9.7

Gravity: 8.3 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 7.41 AU - 7.87 AU

Year: 7791 Days

Day: 14.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 78,983,494 km

• M1: 120,875 km (0.12 R)
• M2: 434,133 km (0.058 R)
• M3: 855,251 km (0.093 R)
• M4: 1,585,737 km (0.12 R)
• M5: 2,629,033 km (0.054 R)
• M6: 3,343,961 km (0.063 R)
• M7: 5,406,467 km (0.041 R)
• M8: 6,853,527 km (0.029 R)
• M9: 9,671,802 km (0.118 R)
• M10: 12,895,935 km (0.103 R)
• M11: 13,416,835 km (0.031 R)
• M12: 16,911,142 km (0.116 R)
• M13: 17,605,874 km (0.059 R)
• M14: 20,265,126 km (0.059 R)
• M15: 21,207,892 km (0.101 R)
• M16: 25,998,315 km (0.025 R)
• M17: 26,643,680 km (0.114 R)
• M18: 27,966,424 km (0.046 R)
• M19: 30,233,730 km (0.092 R)
• M20: 30,742,512 km (0.086 R)
• M21: 31,672,412 km (0.092 R)
• M22: 34,024,540 km (0.06 R)
• M23: 37,183,448 km (0.093 R)
• M24: 38,476,124 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 515.1

Radius: 6.9

Gravity: 10.82 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 14.76 AU - 17.94 AU

Year: 24392 Days

Day: 17.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 78,983,494 km

• M1: 85,869 km (0.11 R)
• M2: 336,446 km (0.063 R)
• M3: 1,638,695 km (0.109 R)
• M4: 2,324,302 km (0.115 R)
• M5: 2,695,454 km (0.067 R)
• M6: 3,325,561 km (0.071 R)
• M7: 4,246,485 km (0.072 R)
• M8: 7,665,694 km (0.116 R)
• M9: 8,173,130 km (0.111 R)
• M10: 8,648,702 km (0.109 R)
• M11: 14,851,478 km (0.066 R)
• M12: 18,707,962 km (0.101 R)
• M13: 22,768,646 km (0.104 R)
• M14: 23,921,747 km (0.12 R)
• M15: 24,242,933 km (0.119 R)
• M16: 27,147,675 km (0.105 R)
• M17: 27,967,771 km (0.076 R)
• M18: 28,324,113 km (0.044 R)
• M19: 35,965,123 km (0.094 R)
• M20: 36,245,769 km (0.081 R)
• M21: 49,919,912 km (0.091 R)
• M22: 50,269,223 km (0.079 R)
• M23: 50,620,030 km (0.026 R)
• M24: 54,404,108 km (0.061 R)
• M25: 54,774,064 km (0.062 R)
• M26: 59,736,973 km (0.047 R)
• M27: 62,529,666 km (0.107 R)
• M28: 67,730,735 km (0.077 R)
• M29: 75,946,351 km (0.106 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 218 - 19,987 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit