🌌 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: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.54 AU - 0.76 AU

Year: 338 Days

Day: 38.3 Hours

Environment

Temp: -136 °C

Axial Tilt: 36.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,905,468 km

• M1: 67,917 km (0.047 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.3

Radius: 14.4

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.56 AU - 0.88 AU

Year: 394 Days

Day: 8.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 53,905,468 km

• M1: 179,069 km (0.067 R)
• M2: 733,179 km (0.076 R)
• M3: 1,802,804 km (0.058 R)
• M4: 2,408,526 km (0.093 R)
• M5: 3,316,286 km (0.058 R)
• M6: 3,971,823 km (0.083 R)
• M7: 4,994,923 km (0.058 R)
• M8: 5,708,954 km (0.087 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.2

Radius: 9.6

Gravity: 5.3 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.67 AU - 0.89 AU

Year: 445 Days

Day: 13.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 115.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,905,468 km

• M1: 120,576 km (0.085 R)
• M2: 484,248 km (0.054 R)
• M3: 784,192 km (0.066 R)
• M4: 1,260,212 km (0.105 R)
• M5: 1,650,962 km (0.069 R)
• M6: 2,048,444 km (0.086 R)
• M7: 2,354,371 km (0.026 R)
• M8: 2,871,232 km (0.088 R)
• M9: 3,392,730 km (0.101 R)
• M10: 3,950,730 km (0.062 R)
• M11: 4,374,092 km (0.096 R)
• M12: 4,754,669 km (0.093 R)
• M13: 5,188,054 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 929.4

Radius: 13

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.74 AU - 0.86 AU

Year: 462 Days

Day: 8.1 Hours

Environment

Temp: -136 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,905,468 km

• M1: 161,715 km (0.071 R)
• M2: 618,138 km (0.056 R)
• M3: 1,188,854 km (0.079 R)
• M4: 1,631,514 km (0.104 R)
• M5: 2,036,177 km (0.099 R)
• M6: 2,569,343 km (0.106 R)
• M7: 3,089,944 km (0.088 R)
• M8: 3,500,740 km (0.067 R)
• M9: 3,989,626 km (0.105 R)
• M10: 4,928,053 km (0.074 R)
• M11: 5,372,957 km (0.075 R)
• M12: 5,953,546 km (0.094 R)
• M13: 6,653,814 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 159.1

Radius: 12.3

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 0.83 AU - 0.95 AU

Year: 542 Days

Day: 14 Hours

Environment

Temp: -154 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 53,905,468 km

• M1: 153,039 km (0.08 R)
• M2: 616,942 km (0.112 R)
• M3: 1,027,139 km (0.111 R)
• M4: 1,584,241 km (0.081 R)
• M5: 2,686,329 km (0.056 R)
• M6: 3,118,218 km (0.098 R)
• M7: 3,520,636 km (0.033 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 184.6

Radius: 13.9

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 1.22 AU - 1.28 AU

Year: 902 Days

Day: 10.5 Hours

Environment

Temp: -170 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,905,468 km

• M1: 176,974 km (0.1 R)
• M2: 980,913 km (0.053 R)
• M3: 1,461,422 km (0.119 R)
• M4: 2,433,209 km (0.042 R)
• M5: 3,585,711 km (0.102 R)
• M6: 4,399,075 km (0.067 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 541.6

Radius: 10.9

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.88 AU - 2.56 AU

Year: 2136 Days

Day: 12.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 53,905,468 km

• M1: 135,536 km (0.115 R)
• M2: 514,467 km (0.027 R)
• M3: 1,357,900 km (0.114 R)
• M4: 1,960,181 km (0.085 R)
• M5: 2,394,613 km (0.082 R)
• M6: 3,136,020 km (0.105 R)
• M7: 4,290,168 km (0.083 R)
• M8: 5,007,340 km (0.115 R)
• M9: 6,946,577 km (0.092 R)
• M10: 7,415,866 km (0.096 R)
• M11: 10,297,420 km (0.056 R)
• M12: 12,006,426 km (0.111 R)
• M13: 13,343,681 km (0.098 R)
• M14: 13,725,156 km (0.09 R)
• M15: 15,049,247 km (0.086 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.2

Radius: 10.5

Gravity: 1.53 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 2.56 AU - 2.86 AU

Year: 2881 Days

Day: 13.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,905,468 km

• M1: 130,599 km (0.102 R)
• M2: 766,091 km (0.101 R)
• M3: 1,242,261 km (0.111 R)
• M4: 1,674,150 km (0.112 R)
• M5: 2,049,341 km (0.109 R)
• M6: 2,431,265 km (0.085 R)
• M7: 2,846,997 km (0.086 R)
• M8: 3,219,496 km (0.071 R)
• M9: 4,749,882 km (0.094 R)
• M10: 5,842,694 km (0.102 R)
• M11: 6,448,267 km (0.087 R)
• M12: 7,488,121 km (0.064 R)
• M13: 11,278,183 km (0.082 R)
• M14: 12,143,607 km (0.119 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83.3

Radius: 15

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 2.18 AU - 3.46 AU

Year: 3058 Days

Day: 7.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 53,905,468 km

• M1: 186,698 km (0.106 R)
• M2: 727,345 km (0.1 R)
• M3: 1,258,417 km (0.077 R)
• M4: 1,826,740 km (0.057 R)
• M5: 2,567,099 km (0.088 R)
• M6: 3,666,045 km (0.115 R)
• M7: 4,172,883 km (0.103 R)
• M8: 4,799,399 km (0.092 R)
• M9: 5,589,126 km (0.089 R)
• M10: 6,853,078 km (0.097 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 233

Radius: 7.4

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 9.45 AU - 10.57 AU

Year: 20449 Days

Day: 16.9 Hours

Environment

Temp: -237 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 53,905,468 km

• M1: 94,097 km (0.064 R)
• M2: 427,252 km (0.08 R)
• M3: 912,846 km (0.032 R)
• M4: 1,163,123 km (0.059 R)
• M5: 2,301,862 km (0.059 R)
• M6: 3,115,376 km (0.102 R)
• M7: 4,491,078 km (0.117 R)
• M8: 5,061,494 km (0.025 R)
• M9: 5,679,034 km (0.115 R)
• M10: 6,423,134 km (0.105 R)
• M11: 7,399,709 km (0.119 R)
• M12: 8,149,045 km (0.046 R)
• M13: 8,518,701 km (0.079 R)
• M14: 11,370,485 km (0.044 R)
• M15: 11,949,728 km (0.027 R)
• M16: 14,870,477 km (0.076 R)
• M17: 16,277,146 km (0.054 R)
• M18: 17,770,282 km (0.112 R)
• M19: 18,079,501 km (0.085 R)
• M20: 18,313,771 km (0.091 R)
• M21: 22,613,364 km (0.1 R)
• M22: 26,223,160 km (0.073 R)
• M23: 31,873,622 km (0.098 R)
• M24: 34,320,444 km (0.04 R)
• M25: 35,041,805 km (0.103 R)
• M26: 39,061,051 km (0.102 R)
• M27: 44,220,383 km (0.073 R)
• M28: 45,361,665 km (0.051 R)
• M29: 48,000,870 km (0.089 R)
• M30: 52,465,469 km (0.1 R)
• M31: 53,102,307 km (0.118 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 262 - 17,595 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit