🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.48 AU - 0.66 AU

Year: 159 Days

Day: 21.4 Hours

Environment

Temp: 228 °C

Axial Tilt: 149.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 45,609,771 km

• M1: 257,009 km (0.103 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.63 AU - 0.87 AU

Year: 240 Days

Day: 32.4 Hours

Environment

Temp: 181 °C

Axial Tilt: 15 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.82

Radius: 1.88

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.69 AU - 0.99 AU

Year: 284 Days

Day: 43.6 Hours

Environment

Temp: 144 °C

Axial Tilt: 6.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.93 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.7 AU - 1.16 AU

Year: 331 Days

Day: 25.5 Hours

Environment

Temp: 20 °C

Axial Tilt: 10 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.32

Radius: 1.12

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 2.65 AU - 3.13 AU

Year: 1813 Days

Day: 21.9 Hours

Environment

Temp: -105 °C

Axial Tilt: 43.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,609,771 km

• M1: 125,513 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 552.4

Radius: 10.1

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 5.55 AU - 5.79 AU

Year: 4981 Days

Day: 5.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 45,609,771 km

• M1: 125,662 km (0.04 R)
• M2: 566,976 km (0.081 R)
• M3: 1,066,184 km (0.046 R)
• M4: 1,911,861 km (0.093 R)
• M5: 2,238,134 km (0.083 R)
• M6: 2,601,806 km (0.076 R)
• M7: 3,135,721 km (0.108 R)
• M8: 3,982,595 km (0.09 R)
• M9: 4,668,650 km (0.038 R)
• M10: 5,404,073 km (0.071 R)
• M11: 6,094,318 km (0.102 R)
• M12: 7,104,552 km (0.099 R)
• M13: 7,511,010 km (0.103 R)
• M14: 7,826,063 km (0.093 R)
• M15: 8,824,479 km (0.089 R)
• M16: 13,421,771 km (0.057 R)
• M17: 13,939,081 km (0.105 R)
• M18: 15,740,987 km (0.073 R)
• M19: 16,258,297 km (0.104 R)
• M20: 18,002,608 km (0.054 R)
• M21: 19,145,984 km (0.115 R)
• M22: 19,669,577 km (0.074 R)
• M23: 20,337,232 km (0.047 R)
• M24: 24,588,504 km (0.095 R)
• M25: 25,599,038 km (0.117 R)
• M26: 25,915,438 km (0.117 R)
• M27: 27,371,922 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 610.7

Radius: 13.7

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 7.16 AU - 11.46 AU

Year: 10481 Days

Day: 12.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 144.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 45,609,771 km

• M1: 173,683 km (0.064 R)
• M2: 793,766 km (0.045 R)
• M3: 1,739,225 km (0.091 R)
• M4: 3,183,143 km (0.097 R)
• M5: 3,994,263 km (0.111 R)
• M6: 4,787,132 km (0.112 R)
• M7: 6,028,345 km (0.042 R)
• M8: 8,724,997 km (0.117 R)
• M9: 9,714,736 km (0.091 R)
• M10: 10,211,850 km (0.115 R)
• M11: 12,956,971 km (0.046 R)
• M12: 14,055,917 km (0.084 R)
• M13: 14,499,624 km (0.057 R)
• M14: 16,931,936 km (0.037 R)
• M15: 18,697,490 km (0.038 R)
• M16: 19,157,503 km (0.117 R)
• M17: 23,644,243 km (0.09 R)
• M18: 24,182,496 km (0.112 R)
• M19: 26,131,008 km (0.119 R)
• M20: 27,684,432 km (0.113 R)
• M21: 31,403,435 km (0.069 R)
• M22: 32,492,807 km (0.057 R)
• M23: 34,288,131 km (0.077 R)
• M24: 37,466,338 km (0.107 R)
• M25: 38,198,320 km (0.071 R)
• M26: 39,943,679 km (0.038 R)
• M27: 40,452,012 km (0.081 R)
• M28: 44,267,057 km (0.072 R)
• M29: 47,316,759 km (0.095 R)

Planet 8 - Gas Giant

Semi-Major Axis: 12.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242.3

Radius: 13

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 10.54 AU - 13.74 AU

Year: 15606 Days

Day: 12.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 45,609,771 km

• M1: 161,865 km (0.029 R)
• M2: 600,935 km (0.034 R)
• M3: 1,328,429 km (0.066 R)
• M4: 1,750,744 km (0.12 R)
• M5: 2,299,768 km (0.074 R)
• M6: 2,962,636 km (0.067 R)
• M7: 4,528,028 km (0.115 R)
• M8: 4,940,769 km (0.107 R)
• M9: 7,082,262 km (0.066 R)
• M10: 7,682,000 km (0.042 R)
• M11: 10,681,737 km (0.104 R)
• M12: 11,525,768 km (0.12 R)
• M13: 12,243,987 km (0.067 R)
• M14: 15,884,302 km (0.057 R)
• M15: 17,409,452 km (0.061 R)
• M16: 20,191,225 km (0.094 R)
• M17: 20,829,559 km (0.119 R)
• M18: 21,317,098 km (0.076 R)
• M19: 25,960,915 km (0.088 R)
• M20: 31,771,147 km (0.114 R)
• M21: 32,417,709 km (0.113 R)
• M22: 36,365,597 km (0.097 R)
• M23: 39,250,891 km (0.104 R)
• M24: 42,806,234 km (0.055 R)
• M25: 44,393,617 km (0.091 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 12,727 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit