🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.1

Radius: 1.35

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.55 AU - 0.79 AU

Year: 202 Days

Day: 35.7 Hours

Environment

Temp: 210 °C

Axial Tilt: 38.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 84,265,983 km

• M1: 32,612 km (0.068 R)
• M2: 193,729 km (0.116 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.75

Radius: 1.25

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1 AU - 1.04 AU

Year: 380 Days

Day: 26.8 Hours

Environment

Temp: 36 °C

Axial Tilt: 16.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.18

Radius: 0.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 1.07 AU - 1.77 AU

Year: 624 Days

Day: 18.3 Hours

Environment

Temp: -27 °C

Axial Tilt: 31.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.57

Radius: 0.8

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 1.78 AU - 2.04 AU

Year: 974 Days

Day: 26.6 Hours

Environment

Temp: -71 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,265,983 km

• M1: 45,478 km (0.09 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.39

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.81 AU - 2.77 AU

Year: 1279 Days

Day: 19.6 Hours

Environment

Temp: -87 °C

Axial Tilt: 23.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.5 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 6.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526.1

Radius: 14.5

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 6.33 AU - 7.09 AU

Year: 6413 Days

Day: 10.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 84,265,983 km

• M1: 181,462 km (0.108 R)
• M2: 634,744 km (0.1 R)
• M3: 1,101,340 km (0.066 R)
• M4: 1,644,978 km (0.09 R)
• M5: 2,135,809 km (0.107 R)
• M6: 2,889,483 km (0.085 R)
• M7: 3,507,920 km (0.028 R)
• M8: 3,999,649 km (0.032 R)
• M9: 5,013,324 km (0.054 R)
• M10: 5,610,967 km (0.114 R)
• M11: 6,949,868 km (0.119 R)
• M12: 7,694,866 km (0.025 R)
• M13: 8,220,702 km (0.095 R)
• M14: 9,261,155 km (0.103 R)
• M15: 11,125,444 km (0.05 R)
• M16: 14,040,807 km (0.068 R)
• M17: 15,000,926 km (0.029 R)
• M18: 16,864,018 km (0.079 R)
• M19: 19,767,115 km (0.085 R)
• M20: 22,303,247 km (0.115 R)
• M21: 22,758,773 km (0.044 R)
• M22: 26,545,993 km (0.089 R)
• M23: 28,189,774 km (0.067 R)
• M24: 28,722,791 km (0.094 R)
• M25: 32,643,751 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.5

Radius: 11.2

Gravity: 7.29 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 9.02 AU - 14.04 AU

Year: 14445 Days

Day: 9.2 Hours

Environment

Temp: -180 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 84,265,983 km

• M1: 139,425 km (0.065 R)
• M2: 551,717 km (0.041 R)
• M3: 1,165,816 km (0.078 R)
• M4: 1,780,813 km (0.119 R)
• M5: 2,557,974 km (0.063 R)
• M6: 3,049,852 km (0.049 R)
• M7: 3,466,183 km (0.027 R)
• M8: 4,131,744 km (0.083 R)
• M9: 4,984,601 km (0.113 R)
• M10: 6,030,440 km (0.111 R)
• M11: 6,605,344 km (0.091 R)
• M12: 7,490,066 km (0.071 R)
• M13: 7,865,258 km (0.077 R)
• M14: 10,914,960 km (0.044 R)
• M15: 11,337,125 km (0.094 R)
• M16: 11,959,153 km (0.077 R)
• M17: 13,001,401 km (0.108 R)
• M18: 15,871,436 km (0.074 R)
• M19: 16,968,737 km (0.082 R)
• M20: 19,932,271 km (0.071 R)
• M21: 27,302,509 km (0.049 R)
• M22: 32,821,773 km (0.066 R)
• M23: 37,249,122 km (0.115 R)
• M24: 40,031,193 km (0.101 R)
• M25: 41,036,940 km (0.092 R)
• M26: 41,473,018 km (0.09 R)
• M27: 42,059,292 km (0.071 R)
• M28: 46,950,394 km (0.075 R)
• M29: 52,548,945 km (0.034 R)
• M30: 66,040,728 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 12.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 545.1

Radius: 8.3

Gravity: 7.91 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 9.04 AU - 15.06 AU

Year: 15433 Days

Day: 13.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 69.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 84,265,983 km

• M1: 108,608 km (0.104 R)
• M2: 448,644 km (0.12 R)
• M3: 742,454 km (0.104 R)
• M4: 1,073,664 km (0.097 R)
• M5: 1,517,820 km (0.109 R)
• M6: 2,289,895 km (0.098 R)
• M7: 4,037,048 km (0.09 R)
• M8: 4,844,278 km (0.114 R)
• M9: 5,792,280 km (0.065 R)
• M10: 8,721,107 km (0.107 R)
• M11: 11,302,269 km (0.094 R)
• M12: 12,203,297 km (0.062 R)
• M13: 13,086,822 km (0.111 R)
• M14: 13,346,972 km (0.061 R)
• M15: 18,805,051 km (0.095 R)
• M16: 22,950,707 km (0.119 R)
• M17: 26,822,898 km (0.065 R)
• M18: 27,881,602 km (0.109 R)
• M19: 31,340,904 km (0.109 R)
• M20: 32,515,097 km (0.069 R)
• M21: 33,962,606 km (0.115 R)
• M22: 34,702,218 km (0.077 R)
• M23: 35,326,640 km (0.118 R)
• M24: 40,183,185 km (0.085 R)
• M25: 45,914,429 km (0.046 R)
• M26: 47,888,373 km (0.105 R)
• M27: 49,444,789 km (0.064 R)
• M28: 50,394,736 km (0.115 R)
• M29: 52,658,301 km (0.032 R)
• M30: 54,483,694 km (0.066 R)
• M31: 58,436,070 km (0.068 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 909.9

Radius: 3.2

Gravity: 88.86 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 13.87 AU - 14.99 AU

Year: 20224 Days

Day: 23.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 84,265,983 km

• M1: 40,092 km (0.06 R)
• M2: 158,125 km (0.053 R)
• M3: 831,016 km (0.112 R)
• M4: 1,436,439 km (0.102 R)
• M5: 6,059,761 km (0.094 R)
• M6: 6,324,699 km (0.098 R)
• M7: 6,877,463 km (0.068 R)
• M8: 7,663,899 km (0.079 R)
• M9: 9,009,532 km (0.116 R)
• M10: 11,882,708 km (0.092 R)
• M11: 12,721,653 km (0.113 R)
• M12: 13,976,630 km (0.068 R)
• M13: 14,990,305 km (0.042 R)
• M14: 18,141,883 km (0.109 R)
• M15: 22,431,154 km (0.098 R)
• M16: 29,678,572 km (0.095 R)
• M17: 32,136,615 km (0.057 R)
• M18: 36,721,939 km (0.082 R)
• M19: 39,550,087 km (0.087 R)
• M20: 41,095,283 km (0.107 R)
• M21: 54,363,417 km (0.11 R)
• M22: 59,017,258 km (0.12 R)
• M23: 71,571,212 km (0.078 R)
• M24: 72,253,228 km (0.081 R)
• M25: 76,199,770 km (0.107 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 471 - 10,514 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit