🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.51 AU - 0.69 AU

Year: 296 Days

Day: 32.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 46.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 885.1

Radius: 9.9

Gravity: 9.03 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.72 AU - 0.78 AU

Year: 413 Days

Day: 10.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 67,111,379 km

• M1: 123,119 km (0.071 R)
• M2: 706,700 km (0.067 R)
• M3: 1,080,545 km (0.115 R)
• M4: 1,637,498 km (0.07 R)
• M5: 2,247,409 km (0.071 R)
• M6: 3,384,652 km (0.071 R)
• M7: 4,163,458 km (0.079 R)
• M8: 5,169,354 km (0.075 R)
• M9: 5,482,313 km (0.12 R)
• M10: 5,931,107 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 890.1

Radius: 12.5

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.6 AU - 0.9 AU

Year: 413 Days

Day: 7.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 67,111,379 km

• M1: 156,479 km (0.088 R)
• M2: 776,114 km (0.066 R)
• M3: 1,387,969 km (0.112 R)
• M4: 1,836,763 km (0.061 R)
• M5: 2,575,178 km (0.07 R)
• M6: 3,080,819 km (0.049 R)
• M7: 3,728,727 km (0.109 R)
• M8: 4,553,610 km (0.108 R)
• M9: 4,994,175 km (0.112 R)
• M10: 5,496,525 km (0.112 R)
• M11: 5,979,128 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 476.9

Radius: 9.2

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.85 AU - 1.01 AU

Year: 570 Days

Day: 8.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 67,111,379 km

• M1: 114,442 km (0.068 R)
• M2: 503,995 km (0.071 R)
• M3: 863,928 km (0.11 R)
• M4: 1,270,834 km (0.1 R)
• M5: 1,587,084 km (0.099 R)
• M6: 1,874,910 km (0.073 R)
• M7: 2,508,457 km (0.118 R)
• M8: 3,374,180 km (0.061 R)
• M9: 3,909,441 km (0.102 R)
• M10: 4,296,900 km (0.09 R)
• M11: 4,740,457 km (0.119 R)
• M12: 5,429,206 km (0.109 R)
• M13: 6,128,576 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.9

Radius: 10.8

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.96 AU - 1.22 AU

Year: 724 Days

Day: 14.1 Hours

Environment

Temp: -168 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 67,111,379 km

• M1: 134,339 km (0.116 R)
• M2: 535,710 km (0.118 R)
• M3: 871,707 km (0.067 R)
• M4: 1,298,958 km (0.116 R)
• M5: 1,898,995 km (0.093 R)
• M6: 2,571,139 km (0.096 R)
• M7: 3,509,716 km (0.118 R)
• M8: 3,855,436 km (0.079 R)
• M9: 4,223,896 km (0.108 R)
• M10: 4,678,524 km (0.047 R)
• M11: 5,115,350 km (0.065 R)
• M12: 5,867,528 km (0.072 R)
• M13: 6,299,267 km (0.062 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 165.2

Radius: 13.5

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.08 AU - 1.18 AU

Year: 764 Days

Day: 5 Hours

Environment

Temp: -167 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 67,111,379 km

• M1: 169,494 km (0.109 R)
• M2: 1,209,499 km (0.11 R)
• M3: 2,093,772 km (0.12 R)
• M4: 2,627,537 km (0.077 R)
• M5: 3,089,346 km (0.1 R)
• M6: 3,774,354 km (0.077 R)
• M7: 4,572,609 km (0.101 R)
• M8: 5,140,183 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 318.4

Radius: 13.3

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 2.51 AU - 2.87 AU

Year: 2805 Days

Day: 10 Hours

Environment

Temp: -191 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 67,111,379 km

• M1: 165,455 km (0.114 R)
• M2: 603,478 km (0.104 R)
• M3: 1,029,383 km (0.094 R)
• M4: 1,506,750 km (0.113 R)
• M5: 2,193,254 km (0.07 R)
• M6: 2,799,425 km (0.115 R)
• M7: 3,253,454 km (0.066 R)
• M8: 3,954,470 km (0.034 R)
• M9: 4,529,674 km (0.105 R)
• M10: 4,986,546 km (0.093 R)
• M11: 6,728,763 km (0.117 R)
• M12: 7,242,482 km (0.094 R)
• M13: 7,899,216 km (0.105 R)
• M14: 8,564,328 km (0.114 R)
• M15: 9,039,152 km (0.06 R)
• M16: 10,498,330 km (0.112 R)
• M17: 12,627,407 km (0.05 R)
• M18: 15,121,652 km (0.102 R)
• M19: 15,723,035 km (0.068 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 713.6

Radius: 3

Gravity: 79.29 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 7.78 AU - 9.56 AU

Year: 16232 Days

Day: 24.8 Hours

Environment

Temp: -234 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 67,111,379 km

• M1: 37,250 km (0.06 R)
• M2: 162,164 km (0.056 R)
• M3: 268,229 km (0.09 R)
• M4: 461,958 km (0.082 R)
• M5: 1,048,083 km (0.067 R)
• M6: 1,229,844 km (0.104 R)
• M7: 1,639,593 km (0.039 R)
• M8: 2,094,071 km (0.098 R)
• M9: 2,791,646 km (0.06 R)
• M10: 3,063,615 km (0.032 R)
• M11: 4,171,088 km (0.083 R)
• M12: 5,750,991 km (0.105 R)
• M13: 7,501,585 km (0.111 R)
• M14: 9,577,704 km (0.117 R)
• M15: 10,599,009 km (0.062 R)
• M16: 11,196,802 km (0.033 R)
• M17: 17,952,193 km (0.091 R)
• M18: 18,457,535 km (0.111 R)
• M19: 22,651,511 km (0.1 R)
• M20: 25,703,757 km (0.064 R)
• M21: 29,249,376 km (0.112 R)
• M22: 33,866,714 km (0.091 R)
• M23: 41,374,732 km (0.107 R)
• M24: 41,960,408 km (0.07 R)
• M25: 43,148,215 km (0.113 R)
• M26: 43,599,402 km (0.106 R)
• M27: 45,902,461 km (0.092 R)
• M28: 50,415,978 km (0.088 R)
• M29: 54,337,687 km (0.069 R)
• M30: 55,747,946 km (0.1 R)
• M31: 56,462,126 km (0.047 R)
• M32: 64,725,613 km (0.113 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 315 - 15,871 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit