🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.83

Radius: 0.93

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.52 AU - 0.66 AU

Year: 166 Days

Day: 45.8 Hours

Environment

Temp: 194 °C

Axial Tilt: 35.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 64,435,382 km

• M1: 25,880 km (0.072 R)
• M2: 73,901 km (0.091 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.54 AU - 0.84 AU

Year: 209 Days

Day: 42.8 Hours

Environment

Temp: 181 °C

Axial Tilt: 28 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.59 AU - 0.83 AU

Year: 219 Days

Day: 22.8 Hours

Environment

Temp: 202 °C

Axial Tilt: 38.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.81

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 1.67 AU - 2.05 AU

Year: 927 Days

Day: 22.5 Hours

Environment

Temp: -59 °C

Axial Tilt: 37.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,435,382 km

• M1: 1,192,594 km (0.069 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.27 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.78

Radius: 1.26

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.89 AU - 2.65 AU

Year: 1249 Days

Day: 26.9 Hours

Environment

Temp: -72 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,435,382 km

• M1: 451,337 km (0.047 R)

Asteroid Belt

Center: 4.54 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 6.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273

Radius: 14.6

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 5.84 AU - 7.78 AU

Year: 6491 Days

Day: 5.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 64,435,382 km

• M1: 210,335 km (0.06 R)
• M2: 789,578 km (0.049 R)
• M3: 1,366,427 km (0.116 R)
• M4: 2,085,993 km (0.061 R)
• M5: 2,943,189 km (0.073 R)
• M6: 3,789,763 km (0.079 R)
• M7: 4,432,884 km (0.059 R)
• M8: 5,279,309 km (0.114 R)
• M9: 5,968,506 km (0.114 R)
• M10: 7,294,542 km (0.028 R)
• M11: 7,766,373 km (0.116 R)
• M12: 8,549,219 km (0.07 R)
• M13: 14,035,571 km (0.083 R)
• M14: 14,768,152 km (0.119 R)
• M15: 18,078,903 km (0.08 R)
• M16: 18,571,379 km (0.107 R)
• M17: 19,842,213 km (0.112 R)
• M18: 21,717,721 km (0.079 R)
• M19: 23,199,937 km (0.085 R)
• M20: 24,002,829 km (0.107 R)
• M21: 25,587,070 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 749.3

Radius: 11.3

Gravity: 5.87 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 7.57 AU - 7.99 AU

Year: 7926 Days

Day: 10.4 Hours

Environment

Temp: -166 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,435,382 km

• M1: 140,472 km (0.093 R)
• M2: 559,496 km (0.109 R)
• M3: 1,036,564 km (0.074 R)
• M4: 1,614,610 km (0.103 R)
• M5: 2,399,550 km (0.054 R)
• M6: 3,131,981 km (0.088 R)
• M7: 3,931,282 km (0.117 R)
• M8: 5,537,814 km (0.096 R)
• M9: 7,425,889 km (0.091 R)
• M10: 10,732,301 km (0.107 R)
• M11: 17,713,435 km (0.094 R)
• M12: 27,237,135 km (0.066 R)
• M13: 27,806,205 km (0.095 R)
• M14: 29,461,954 km (0.092 R)
• M15: 31,182,330 km (0.103 R)
• M16: 34,711,493 km (0.072 R)
• M17: 38,379,783 km (0.103 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 607.5

Radius: 3.2

Gravity: 59.33 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 11.03 AU - 14.39 AU

Year: 16550 Days

Day: 19 Hours

Environment

Temp: -191 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 64,435,382 km

• M1: 40,541 km (0.087 R)
• M2: 240,254 km (0.107 R)
• M3: 361,728 km (0.088 R)
• M4: 547,229 km (0.041 R)
• M5: 773,271 km (0.071 R)
• M6: 986,748 km (0.117 R)
• M7: 1,293,274 km (0.036 R)
• M8: 1,921,285 km (0.107 R)
• M9: 2,189,664 km (0.088 R)
• M10: 2,707,123 km (0.037 R)
• M11: 4,913,692 km (0.03 R)
• M12: 5,638,194 km (0.093 R)
• M13: 6,307,794 km (0.067 R)
• M14: 6,556,276 km (0.093 R)
• M15: 7,615,878 km (0.109 R)
• M16: 7,993,014 km (0.027 R)
• M17: 9,251,880 km (0.106 R)
• M18: 13,400,229 km (0.049 R)
• M19: 14,018,966 km (0.116 R)
• M20: 14,229,301 km (0.064 R)
• M21: 14,656,403 km (0.101 R)
• M22: 25,297,299 km (0.069 R)
• M23: 32,640,759 km (0.052 R)
• M24: 37,395,279 km (0.118 R)
• M25: 38,480,611 km (0.058 R)
• M26: 38,755,124 km (0.086 R)
• M27: 39,586,738 km (0.104 R)
• M28: 40,998,942 km (0.111 R)
• M29: 42,737,568 km (0.058 R)
• M30: 44,524,665 km (0.076 R)
• M31: 45,743,439 km (0.078 R)
• M32: 54,211,426 km (0.114 R)
• M33: 61,206,772 km (0.112 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: 206 - 18,563 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit