🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.29

Radius: 1.39

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.57 AU - 0.73 AU

Year: 338 Days

Day: 15.7 Hours

Environment

Temp: -136 °C

Axial Tilt: 34.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922.4

Radius: 11.1

Gravity: 7.49 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.64 AU - 0.9 AU

Year: 436 Days

Day: 6.6 Hours

Environment

Temp: -148 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 27,111,742 km

• M1: 140,772 km (0.079 R)
• M2: 504,444 km (0.026 R)
• M3: 884,273 km (0.102 R)
• M4: 1,247,796 km (0.076 R)
• M5: 1,638,994 km (0.051 R)
• M6: 2,052,184 km (0.11 R)
• M7: 2,446,075 km (0.118 R)
• M8: 3,012,901 km (0.055 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.1

Radius: 9

Gravity: 7.19 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.02 AU - 1.04 AU

Year: 675 Days

Day: 8.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,111,742 km

• M1: 111,899 km (0.098 R)
• M2: 457,919 km (0.09 R)
• M3: 782,995 km (0.118 R)
• M4: 1,673,701 km (0.107 R)
• M5: 2,001,470 km (0.062 R)
• M6: 2,676,904 km (0.102 R)
• M7: 3,128,690 km (0.059 R)
• M8: 3,431,326 km (0.071 R)
• M9: 3,908,095 km (0.12 R)
• M10: 4,601,331 km (0.101 R)
• M11: 5,286,190 km (0.06 R)
• M12: 5,904,329 km (0.118 R)
• M13: 6,468,911 km (0.083 R)
• M14: 7,005,219 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882.9

Radius: 8.8

Gravity: 11.4 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.92 AU - 2.74 AU

Year: 2296 Days

Day: 11.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 163.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,111,742 km

• M1: 109,506 km (0.102 R)
• M2: 471,383 km (0.119 R)
• M3: 873,951 km (0.105 R)
• M4: 1,185,264 km (0.045 R)
• M5: 1,581,698 km (0.072 R)
• M6: 1,966,015 km (0.065 R)
• M7: 3,021,877 km (0.095 R)
• M8: 3,580,775 km (0.119 R)
• M9: 3,924,401 km (0.11 R)
• M10: 5,959,979 km (0.085 R)
• M11: 6,334,423 km (0.104 R)
• M12: 7,219,743 km (0.111 R)
• M13: 7,801,828 km (0.095 R)
• M14: 10,370,723 km (0.118 R)
• M15: 11,231,958 km (0.076 R)
• M16: 12,612,148 km (0.109 R)
• M17: 14,008,345 km (0.074 R)
• M18: 17,753,378 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 876.6

Radius: 12.1

Gravity: 5.99 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 2.35 AU - 3.31 AU

Year: 3074 Days

Day: 10.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 27,111,742 km

• M1: 150,495 km (0.053 R)
• M2: 635,043 km (0.047 R)
• M3: 1,012,329 km (0.11 R)
• M4: 1,473,689 km (0.069 R)
• M5: 2,938,401 km (0.047 R)
• M6: 3,519,739 km (0.067 R)
• M7: 4,133,539 km (0.034 R)
• M8: 6,209,508 km (0.091 R)
• M9: 6,769,004 km (0.082 R)
• M10: 8,438,517 km (0.078 R)
• M11: 10,530,194 km (0.11 R)
• M12: 12,436,819 km (0.065 R)
• M13: 17,377,438 km (0.056 R)
• M14: 20,216,357 km (0.043 R)
• M15: 21,184,106 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.8

Radius: 10.3

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 2.73 AU - 3.15 AU

Year: 3255 Days

Day: 6.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 27,111,742 km

• M1: 136,433 km (0.035 R)
• M2: 464,651 km (0.109 R)
• M3: 911,051 km (0.12 R)
• M4: 2,058,467 km (0.065 R)
• M5: 3,148,437 km (0.12 R)
• M6: 3,679,210 km (0.091 R)
• M7: 4,030,017 km (0.115 R)
• M8: 5,744,558 km (0.038 R)
• M9: 6,104,640 km (0.093 R)
• M10: 7,633,231 km (0.098 R)
• M11: 8,103,567 km (0.088 R)
• M12: 8,664,709 km (0.12 R)
• M13: 10,221,275 km (0.112 R)
• M14: 10,668,871 km (0.049 R)
• M15: 11,735,055 km (0.12 R)
• M16: 12,637,879 km (0.119 R)
• M17: 12,964,600 km (0.091 R)
• M18: 13,978,874 km (0.101 R)
• M19: 14,632,766 km (0.034 R)
• M20: 15,045,207 km (0.08 R)
• M21: 18,153,103 km (0.101 R)
• M22: 22,404,675 km (0.049 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 92.1

Radius: 3.6

Gravity: 7.11 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 6.25 AU - 7.47 AU

Year: 11601 Days

Day: 18.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,111,742 km

• M1: 61,335 km (0.064 R)
• M2: 509,680 km (0.116 R)
• M3: 1,856,210 km (0.055 R)
• M4: 2,050,089 km (0.085 R)
• M5: 4,330,559 km (0.044 R)
• M6: 5,325,834 km (0.103 R)
• M7: 5,491,439 km (0.111 R)
• M8: 5,603,787 km (0.09 R)
• M9: 8,222,049 km (0.109 R)
• M10: 9,328,774 km (0.107 R)
• M11: 13,593,510 km (0.112 R)
• M12: 13,799,356 km (0.064 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 312 - 16,366 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit