🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.5 AU - 0.76 AU

Year: 328 Days

Day: 28.8 Hours

Environment

Temp: -132 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.18

Radius: 1.07

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.54 AU - 0.76 AU

Year: 344 Days

Day: 17.4 Hours

Environment

Temp: -126 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 31,826,248 km

• M1: 28,274 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731.6

Radius: 12.3

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.75 AU - 0.95 AU

Year: 514 Days

Day: 14.1 Hours

Environment

Temp: -148 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 31,826,248 km

• M1: 153,039 km (0.08 R)
• M2: 545,733 km (0.045 R)
• M3: 1,021,005 km (0.099 R)
• M4: 1,715,738 km (0.113 R)
• M5: 2,482,876 km (0.112 R)
• M6: 2,968,620 km (0.048 R)
• M7: 3,429,830 km (0.111 R)
• M8: 5,308,780 km (0.048 R)
• M9: 5,811,877 km (0.077 R)
• M10: 6,346,690 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116

Radius: 12.6

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.95 AU - 1.21 AU

Year: 736 Days

Day: 6.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 31,826,248 km

• M1: 156,779 km (0.079 R)
• M2: 943,065 km (0.099 R)
• M3: 1,547,440 km (0.119 R)
• M4: 2,086,442 km (0.079 R)
• M5: 2,549,148 km (0.032 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 646.8

Radius: 11.3

Gravity: 5.07 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.97 AU - 1.45 AU

Year: 873 Days

Day: 8 Hours

Environment

Temp: -175 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 31,826,248 km

• M1: 140,622 km (0.118 R)
• M2: 518,057 km (0.027 R)
• M3: 1,027,737 km (0.109 R)
• M4: 1,474,586 km (0.116 R)
• M5: 2,109,330 km (0.041 R)
• M6: 2,575,028 km (0.109 R)
• M7: 2,968,770 km (0.108 R)
• M8: 4,301,687 km (0.101 R)
• M9: 4,824,681 km (0.046 R)
• M10: 6,288,646 km (0.07 R)
• M11: 7,614,831 km (0.058 R)
• M12: 7,979,850 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 799.3

Radius: 14.9

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.13 AU - 1.39 AU

Year: 928 Days

Day: 7.1 Hours

Environment

Temp: -174 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 31,826,248 km

• M1: 185,352 km (0.11 R)
• M2: 683,213 km (0.026 R)
• M3: 1,358,498 km (0.115 R)
• M4: 1,829,432 km (0.067 R)
• M5: 2,490,805 km (0.06 R)
• M6: 3,521,983 km (0.106 R)
• M7: 4,071,904 km (0.12 R)
• M8: 4,696,924 km (0.09 R)
• M9: 6,357,162 km (0.086 R)
• M10: 6,943,136 km (0.078 R)
• M11: 7,442,644 km (0.103 R)
• M12: 8,948,795 km (0.032 R)
• M13: 9,455,333 km (0.071 R)
• M14: 10,281,413 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.5

Radius: 11.9

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.18 AU - 1.82 AU

Year: 1205 Days

Day: 12.8 Hours

Environment

Temp: -178 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 31,826,248 km

• M1: 148,401 km (0.044 R)
• M2: 735,722 km (0.057 R)
• M3: 1,171,651 km (0.115 R)
• M4: 2,006,855 km (0.07 R)
• M5: 5,021,402 km (0.104 R)
• M6: 5,878,299 km (0.073 R)
• M7: 6,387,530 km (0.088 R)
• M8: 6,998,637 km (0.115 R)
• M9: 8,041,035 km (0.079 R)
• M10: 8,810,567 km (0.117 R)
• M11: 9,598,499 km (0.104 R)
• M12: 10,496,535 km (0.099 R)
• M13: 10,949,667 km (0.068 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 176.5

Radius: 9.8

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 3.15 AU - 3.17 AU

Year: 3685 Days

Day: 11 Hours

Environment

Temp: -198 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 31,826,248 km

• M1: 121,922 km (0.105 R)
• M2: 922,720 km (0.106 R)
• M3: 1,596,808 km (0.099 R)
• M4: 2,089,733 km (0.12 R)
• M5: 2,517,283 km (0.042 R)
• M6: 3,156,964 km (0.068 R)
• M7: 3,618,174 km (0.11 R)
• M8: 4,048,717 km (0.06 R)
• M9: 4,513,218 km (0.09 R)
• M10: 5,099,941 km (0.077 R)
• M11: 5,411,853 km (0.083 R)
• M12: 6,173,306 km (0.081 R)
• M13: 6,816,577 km (0.11 R)
• M14: 8,297,296 km (0.066 R)
• M15: 10,050,733 km (0.113 R)
• M16: 12,674,530 km (0.081 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399.4

Radius: 14.9

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 3.28 AU - 5.42 AU

Year: 5952 Days

Day: 13.7 Hours

Environment

Temp: -206 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 31,826,248 km

• M1: 186,249 km (0.072 R)
• M2: 764,296 km (0.047 R)
• M3: 1,509,592 km (0.093 R)
• M4: 2,376,811 km (0.071 R)
• M5: 3,015,444 km (0.04 R)
• M6: 3,919,165 km (0.098 R)
• M7: 4,945,556 km (0.061 R)
• M8: 5,425,616 km (0.107 R)
• M9: 8,241,048 km (0.113 R)
• M10: 8,842,281 km (0.064 R)
• M11: 9,964,864 km (0.029 R)
• M12: 10,474,245 km (0.05 R)
• M13: 11,316,481 km (0.116 R)
• M14: 12,299,488 km (0.069 R)
• M15: 13,853,810 km (0.112 R)
• M16: 15,762,230 km (0.116 R)
• M17: 17,229,037 km (0.072 R)
• M18: 20,568,959 km (0.094 R)
• M19: 21,118,582 km (0.11 R)
• M20: 24,015,395 km (0.096 R)
• M21: 25,875,495 km (0.1 R)
• M22: 26,516,372 km (0.093 R)
• M23: 27,167,871 km (0.086 R)

Planet 10 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.1

Radius: 12.7

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 3.87 AU - 5.57 AU

Year: 6727 Days

Day: 11.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 31,826,248 km

• M1: 158,574 km (0.086 R)
• M2: 646,861 km (0.086 R)
• M3: 1,110,465 km (0.047 R)
• M4: 2,675,857 km (0.082 R)
• M5: 3,748,474 km (0.105 R)
• M6: 4,236,462 km (0.071 R)
• M7: 5,007,340 km (0.105 R)
• M8: 9,639,937 km (0.098 R)
• M9: 10,115,509 km (0.119 R)
• M10: 11,020,127 km (0.051 R)
• M11: 11,588,449 km (0.031 R)
• M12: 12,629,950 km (0.092 R)
• M13: 13,199,918 km (0.07 R)
• M14: 13,950,151 km (0.088 R)
• M15: 16,069,953 km (0.098 R)
• M16: 17,682,768 km (0.119 R)
• M17: 18,330,975 km (0.079 R)
• M18: 19,401,049 km (0.118 R)
• M19: 20,868,155 km (0.062 R)
• M20: 22,634,008 km (0.111 R)
• M21: 25,140,670 km (0.064 R)
• M22: 25,877,888 km (0.036 R)
• M23: 28,088,496 km (0.085 R)
• M24: 29,060,733 km (0.064 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: 405 - 12,823 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit