🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.24

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.51 AU - 0.59 AU

Year: 259 Days

Day: 18.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 47.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.3

Radius: 9.8

Gravity: 8.42 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.85 AU - 0.97 AU

Year: 552 Days

Day: 5.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 33,956,445 km

• M1: 121,922 km (0.118 R)
• M2: 475,871 km (0.101 R)
• M3: 915,389 km (0.045 R)
• M4: 1,246,300 km (0.091 R)
• M5: 1,681,630 km (0.107 R)
• M6: 2,005,958 km (0.111 R)
• M7: 2,342,553 km (0.115 R)
• M8: 4,030,765 km (0.106 R)
• M9: 4,572,010 km (0.066 R)
• M10: 5,350,817 km (0.059 R)
• M11: 5,671,704 km (0.082 R)
• M12: 6,081,153 km (0.117 R)
• M13: 6,671,467 km (0.109 R)
• M14: 7,064,759 km (0.087 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 913.7

Radius: 12

Gravity: 6.35 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.97 AU - 1.43 AU

Year: 836 Days

Day: 11.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 33,956,445 km

• M1: 150,346 km (0.051 R)
• M2: 854,353 km (0.067 R)
• M3: 1,241,363 km (0.094 R)
• M4: 1,653,954 km (0.096 R)
• M5: 2,138,651 km (0.092 R)
• M6: 2,575,327 km (0.1 R)
• M7: 3,006,169 km (0.119 R)
• M8: 3,572,397 km (0.096 R)
• M9: 5,528,689 km (0.04 R)
• M10: 6,251,994 km (0.085 R)
• M11: 7,131,181 km (0.108 R)
• M12: 7,988,676 km (0.091 R)
• M13: 9,051,419 km (0.093 R)
• M14: 9,530,731 km (0.09 R)
• M15: 10,086,487 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 23.1

Radius: 10.1

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.18 AU - 1.34 AU

Year: 899 Days

Day: 15 Hours

Environment

Temp: -171 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 33,956,445 km

• M1: 125,812 km (0.104 R)
• M2: 502,948 km (0.073 R)
• M3: 1,546,543 km (0.092 R)
• M4: 1,938,040 km (0.117 R)
• M5: 2,314,578 km (0.03 R)
• M6: 2,772,797 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.4

Radius: 8.5

Gravity: 6.69 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.53 AU - 1.99 AU

Year: 1485 Days

Day: 6.2 Hours

Environment

Temp: -183 °C

Axial Tilt: 135.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 33,956,445 km

• M1: 105,766 km (0.044 R)
• M2: 509,082 km (0.084 R)
• M3: 929,003 km (0.112 R)
• M4: 1,252,583 km (0.109 R)
• M5: 1,660,387 km (0.107 R)
• M6: 1,983,518 km (0.064 R)
• M7: 2,641,749 km (0.105 R)
• M8: 3,438,208 km (0.075 R)
• M9: 3,967,784 km (0.114 R)
• M10: 4,368,108 km (0.088 R)
• M11: 5,332,117 km (0.112 R)
• M12: 5,952,798 km (0.101 R)
• M13: 6,478,485 km (0.082 R)
• M14: 6,935,806 km (0.115 R)
• M15: 7,363,058 km (0.092 R)
• M16: 8,437,918 km (0.069 R)
• M17: 8,722,304 km (0.109 R)
• M18: 11,929,233 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.5

Radius: 15

Gravity: 0.47 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 3.91 AU - 4.85 AU

Year: 5828 Days

Day: 7.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 33,956,445 km

• M1: 187,147 km (0.093 R)
• M2: 824,135 km (0.047 R)
• M3: 1,382,584 km (0.027 R)
• M4: 3,403,352 km (0.071 R)
• M5: 10,367,282 km (0.118 R)
• M6: 13,688,205 km (0.056 R)
• M7: 14,734,493 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 628.1

Radius: 12.3

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 4.73 AU - 5.35 AU

Year: 7194 Days

Day: 11.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 33,956,445 km

• M1: 153,039 km (0.052 R)
• M2: 636,240 km (0.12 R)
• M3: 1,023,997 km (0.079 R)
• M4: 2,054,428 km (0.113 R)
• M5: 2,644,890 km (0.059 R)
• M6: 3,800,983 km (0.087 R)
• M7: 4,219,558 km (0.044 R)
• M8: 4,807,328 km (0.093 R)
• M9: 5,238,917 km (0.033 R)
• M10: 8,276,502 km (0.056 R)
• M11: 11,251,854 km (0.061 R)
• M12: 11,757,794 km (0.06 R)
• M13: 15,549,352 km (0.088 R)
• M14: 21,060,987 km (0.112 R)
• M15: 22,539,163 km (0.094 R)
• M16: 25,269,025 km (0.034 R)
• M17: 26,579,802 km (0.119 R)
• M18: 27,297,273 km (0.1 R)
• M19: 28,027,610 km (0.079 R)
• M20: 28,490,615 km (0.085 R)
• M21: 29,814,257 km (0.026 R)
• M22: 31,079,855 km (0.028 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.1

Radius: 10.6

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 5.05 AU - 5.41 AU

Year: 7605 Days

Day: 10.9 Hours

Environment

Temp: -219 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 33,956,445 km

• M1: 131,796 km (0.075 R)
• M2: 874,400 km (0.026 R)
• M3: 1,392,158 km (0.106 R)
• M4: 2,002,517 km (0.064 R)
• M5: 2,412,266 km (0.05 R)
• M6: 4,038,544 km (0.092 R)
• M7: 5,139,136 km (0.036 R)
• M8: 6,297,472 km (0.102 R)
• M9: 6,834,379 km (0.097 R)
• M10: 10,767,307 km (0.099 R)
• M11: 11,147,136 km (0.108 R)
• M12: 12,340,628 km (0.042 R)
• M13: 13,894,052 km (0.089 R)
• M14: 15,755,049 km (0.086 R)
• M15: 17,063,283 km (0.065 R)
• M16: 20,612,492 km (0.077 R)
• M17: 22,714,043 km (0.059 R)
• M18: 31,386,082 km (0.069 R)
• M19: 32,654,373 km (0.092 R)
• M20: 33,552,110 km (0.088 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: 404 - 19,414 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit