🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.27

Radius: 0.59

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.97 AU - 1.03 AU

Year: 351 Days

Day: 17.7 Hours

Environment

Temp: 145 °C

Axial Tilt: 39.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 40,980,703 km

• M1: 14,960 km (0.114 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.07

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.68 AU - 2.28 AU

Year: 979 Days

Day: 28.8 Hours

Environment

Temp: -60 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.68

Radius: 1.85

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.95 AU - 2.51 AU

Year: 1170 Days

Day: 16.8 Hours

Environment

Temp: -61 °C

Axial Tilt: 31.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 40,980,703 km

• M1: 174,581 km (0.091 R)
• M2: 508,483 km (0.101 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.9

Radius: 1.72

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.82 AU - 3.14 AU

Year: 1808 Days

Day: 47.3 Hours

Environment

Temp: -84 °C

Axial Tilt: 32.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.83 AU - 4.55 AU

Year: 2491 Days

Day: 16.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 34 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 40,980,703 km

• M1: 25,731 km (0.074 R)
• M2: 443,857 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.6

Radius: 11.6

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 6.11 AU - 7.69 AU

Year: 6370 Days

Day: 14 Hours

Environment

Temp: -158 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,980,703 km

• M1: 144,512 km (0.106 R)
• M2: 783,893 km (0.095 R)
• M3: 1,209,798 km (0.116 R)
• M4: 2,016,579 km (0.118 R)
• M5: 2,893,372 km (0.096 R)
• M6: 3,316,435 km (0.065 R)
• M7: 3,883,112 km (0.059 R)
• M8: 4,987,144 km (0.089 R)
• M9: 7,478,846 km (0.101 R)
• M10: 10,258,824 km (0.077 R)
• M11: 11,207,723 km (0.074 R)
• M12: 13,567,928 km (0.093 R)
• M13: 15,970,769 km (0.058 R)
• M14: 17,244,446 km (0.055 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.9

Radius: 14

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 6.31 AU - 10.51 AU

Year: 8572 Days

Day: 7 Hours

Environment

Temp: -171 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,980,703 km

• M1: 182,360 km (0.062 R)
• M2: 810,372 km (0.031 R)
• M3: 1,805,347 km (0.062 R)
• M4: 2,919,702 km (0.077 R)
• M5: 5,212,738 km (0.104 R)
• M6: 7,089,443 km (0.086 R)
• M7: 14,224,663 km (0.116 R)
• M8: 15,819,825 km (0.048 R)
• M9: 16,718,011 km (0.09 R)
• M10: 18,008,143 km (0.093 R)
• M11: 21,118,881 km (0.061 R)
• M12: 25,395,884 km (0.077 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 776.6

Radius: 14

Gravity: 3.96 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 8.48 AU - 10.6 AU

Year: 10356 Days

Day: 12.2 Hours

Environment

Temp: -177 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 40,980,703 km

• M1: 175,179 km (0.083 R)
• M2: 653,144 km (0.047 R)
• M3: 1,222,963 km (0.065 R)
• M4: 2,304,406 km (0.112 R)
• M5: 3,061,072 km (0.107 R)
• M6: 4,789,376 km (0.115 R)
• M7: 7,851,046 km (0.119 R)
• M8: 8,473,223 km (0.074 R)
• M9: 9,321,443 km (0.1 R)
• M10: 10,645,684 km (0.118 R)
• M11: 11,132,176 km (0.062 R)
• M12: 13,229,089 km (0.092 R)
• M13: 16,851,003 km (0.114 R)
• M14: 18,192,447 km (0.084 R)
• M15: 21,684,062 km (0.113 R)
• M16: 25,503,894 km (0.088 R)
• M17: 26,181,423 km (0.075 R)
• M18: 34,920,033 km (0.087 R)
• M19: 37,343,368 km (0.057 R)
• M20: 40,658,607 km (0.072 R)
• M21: 41,450,728 km (0.091 R)
• M22: 45,002,480 km (0.043 R)
• M23: 47,577,060 km (0.091 R)

Planet 9 - Gas Giant

Semi-Major Axis: 11.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 233.3

Radius: 13.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 8.71 AU - 14.11 AU

Year: 13546 Days

Day: 5 Hours

Environment

Temp: -168 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 40,980,703 km

• M1: 170,542 km (0.092 R)
• M2: 615,595 km (0.111 R)
• M3: 1,045,988 km (0.085 R)
• M4: 1,662,631 km (0.106 R)
• M5: 2,880,208 km (0.085 R)
• M6: 3,574,940 km (0.071 R)
• M7: 4,272,515 km (0.117 R)
• M8: 4,739,261 km (0.062 R)
• M9: 5,614,707 km (0.106 R)
• M10: 15,338,569 km (0.076 R)
• M11: 16,307,963 km (0.107 R)
• M12: 20,520,938 km (0.087 R)
• M13: 21,379,630 km (0.057 R)
• M14: 27,603,500 km (0.079 R)
• M15: 29,427,696 km (0.074 R)
• M16: 32,156,362 km (0.048 R)

Kuiper Belt

Range: 31.2 - 58.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 206 - 16,157 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit