🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.52 AU - 0.6 AU

Year: 275 Days

Day: 43.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 2.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 53,649,957 km

• M1: 94,546 km (0.12 R)
• M2: 442,660 km (0.066 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.14

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.54 AU - 0.6 AU

Year: 282 Days

Day: 36.1 Hours

Environment

Temp: -119 °C

Axial Tilt: 21.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 208

Radius: 12.3

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.61 AU - 0.83 AU

Year: 401 Days

Day: 13.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 53,649,957 km

• M1: 153,039 km (0.099 R)
• M2: 536,009 km (0.104 R)
• M3: 1,015,770 km (0.11 R)
• M4: 1,399,937 km (0.11 R)
• M5: 2,148,973 km (0.101 R)
• M6: 2,687,825 km (0.117 R)
• M7: 3,375,826 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 548.4

Radius: 14.1

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.77 AU - 1.13 AU

Year: 607 Days

Day: 6.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 53,649,957 km

• M1: 175,628 km (0.108 R)
• M2: 623,823 km (0.107 R)
• M3: 1,064,389 km (0.073 R)
• M4: 1,572,872 km (0.102 R)
• M5: 2,182,035 km (0.114 R)
• M6: 3,223,236 km (0.116 R)
• M7: 3,710,775 km (0.091 R)
• M8: 4,219,109 km (0.103 R)
• M9: 4,900,228 km (0.085 R)
• M10: 5,671,255 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 403.2

Radius: 10

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.86 AU - 1.42 AU

Year: 798 Days

Day: 14 Hours

Environment

Temp: -157 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,649,957 km

• M1: 124,316 km (0.102 R)
• M2: 489,335 km (0.115 R)
• M3: 1,023,549 km (0.071 R)
• M4: 1,487,900 km (0.107 R)
• M5: 1,990,998 km (0.081 R)
• M6: 3,009,012 km (0.12 R)
• M7: 3,352,339 km (0.08 R)
• M8: 4,177,670 km (0.114 R)
• M9: 5,410,656 km (0.099 R)
• M10: 5,772,234 km (0.11 R)
• M11: 6,325,148 km (0.095 R)
• M12: 6,829,891 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 17.8

Radius: 12.8

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.84 AU - 1.96 AU

Year: 1718 Days

Day: 10 Hours

Environment

Temp: -194 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 53,649,957 km

• M1: 160,219 km (0.078 R)
• M2: 647,609 km (0.038 R)
• M3: 3,451,821 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 778

Radius: 7.6

Gravity: 13.47 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 6.79 AU - 7.55 AU

Year: 12595 Days

Day: 16.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 53,649,957 km

• M1: 94,546 km (0.106 R)
• M2: 757,863 km (0.113 R)
• M3: 1,048,681 km (0.05 R)
• M4: 1,619,995 km (0.113 R)
• M5: 2,949,472 km (0.098 R)
• M6: 3,289,807 km (0.075 R)
• M7: 4,049,315 km (0.061 R)
• M8: 4,408,649 km (0.079 R)
• M9: 5,330,322 km (0.107 R)
• M10: 7,114,426 km (0.095 R)
• M11: 8,472,625 km (0.045 R)
• M12: 8,714,674 km (0.087 R)
• M13: 9,011,327 km (0.107 R)
• M14: 11,872,386 km (0.09 R)
• M15: 13,972,441 km (0.109 R)
• M16: 14,379,347 km (0.12 R)
• M17: 15,074,828 km (0.048 R)
• M18: 16,458,010 km (0.04 R)
• M19: 18,003,206 km (0.102 R)
• M20: 18,893,014 km (0.118 R)
• M21: 20,847,959 km (0.049 R)
• M22: 22,376,849 km (0.111 R)
• M23: 22,933,952 km (0.079 R)
• M24: 23,310,340 km (0.052 R)
• M25: 30,584,387 km (0.079 R)
• M26: 34,731,390 km (0.08 R)
• M27: 40,869,091 km (0.113 R)
• M28: 42,262,146 km (0.11 R)
• M29: 43,256,075 km (0.094 R)
• M30: 45,142,803 km (0.094 R)
• M31: 46,330,909 km (0.101 R)
• M32: 46,781,797 km (0.05 R)
• M33: 51,935,893 km (0.107 R)
• M34: 52,585,148 km (0.12 R)
• M35: 54,232,220 km (0.088 R)
• M36: 55,913,401 km (0.113 R)
• M37: 58,150,488 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 250.7

Radius: 3.1

Gravity: 26.09 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 8.29 AU - 10.95 AU

Year: 19574 Days

Day: 23.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 53,649,957 km

• M1: 38,596 km (0.038 R)
• M2: 138,378 km (0.052 R)
• M3: 254,017 km (0.073 R)
• M4: 527,931 km (0.073 R)
• M5: 1,428,959 km (0.099 R)
• M6: 1,605,036 km (0.086 R)
• M7: 1,947,764 km (0.055 R)
• M8: 2,108,732 km (0.07 R)
• M9: 3,098,022 km (0.049 R)
• M10: 3,367,747 km (0.119 R)
• M11: 4,096,289 km (0.117 R)
• M12: 4,731,033 km (0.072 R)
• M13: 6,345,942 km (0.117 R)
• M14: 7,066,854 km (0.083 R)
• M15: 9,104,975 km (0.088 R)
• M16: 11,161,497 km (0.105 R)
• M17: 12,631,147 km (0.087 R)
• M18: 14,966,369 km (0.067 R)
• M19: 17,044,882 km (0.036 R)
• M20: 17,881,134 km (0.109 R)
• M21: 18,113,759 km (0.097 R)
• M22: 18,824,199 km (0.114 R)
• M23: 19,389,230 km (0.094 R)
• M24: 20,384,206 km (0.094 R)
• M25: 21,675,235 km (0.093 R)
• M26: 23,203,079 km (0.116 R)
• M27: 25,774,666 km (0.075 R)
• M28: 26,171,100 km (0.119 R)
• M29: 32,615,328 km (0.078 R)
• M30: 32,846,606 km (0.079 R)
• M31: 40,438,548 km (0.05 R)
• M32: 44,567,300 km (0.109 R)
• M33: 48,515,637 km (0.058 R)
• M34: 49,423,696 km (0.032 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 334 - 17,485 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit