🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.47 AU - 0.65 AU

Year: 275 Days

Day: 33.1 Hours

Environment

Temp: -119 °C

Axial Tilt: 21.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,505,574 km

• M1: 151,094 km (0.102 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 528.9

Radius: 11.9

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.7 AU - 0.88 AU

Year: 461 Days

Day: 11.2 Hours

Environment

Temp: -145 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,505,574 km

• M1: 147,952 km (0.116 R)
• M2: 532,868 km (0.108 R)
• M3: 904,020 km (0.118 R)
• M4: 1,472,193 km (0.063 R)
• M5: 1,878,201 km (0.037 R)
• M6: 2,332,829 km (0.037 R)
• M7: 2,850,737 km (0.065 R)
• M8: 3,758,946 km (0.103 R)
• M9: 4,213,125 km (0.114 R)
• M10: 4,806,430 km (0.046 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.7

Radius: 10.4

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.73 AU - 1.11 AU

Year: 579 Days

Day: 10.2 Hours

Environment

Temp: -144 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 56,505,574 km

• M1: 129,552 km (0.051 R)
• M2: 550,969 km (0.095 R)
• M3: 1,207,704 km (0.08 R)
• M4: 1,606,980 km (0.117 R)
• M5: 2,256,085 km (0.116 R)
• M6: 2,586,697 km (0.113 R)
• M7: 4,594,749 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.7

Radius: 13.4

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.85 AU - 1.35 AU

Year: 757 Days

Day: 13.4 Hours

Environment

Temp: -168 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,505,574 km

• M1: 166,652 km (0.113 R)
• M2: 848,669 km (0.05 R)
• M3: 1,627,026 km (0.099 R)
• M4: 2,632,474 km (0.034 R)
• M5: 3,273,800 km (0.115 R)
• M6: 4,165,852 km (0.103 R)
• M7: 5,025,441 km (0.078 R)
• M8: 5,473,038 km (0.07 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.6

Radius: 14.4

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.92 AU - 3.04 AU

Year: 3375 Days

Day: 13.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 56,505,574 km

• M1: 179,517 km (0.109 R)
• M2: 630,256 km (0.098 R)
• M3: 1,104,780 km (0.096 R)
• M4: 1,620,594 km (0.084 R)
• M5: 2,272,092 km (0.097 R)
• M6: 3,339,024 km (0.113 R)
• M7: 4,068,613 km (0.12 R)
• M8: 5,213,336 km (0.116 R)
• M9: 6,449,314 km (0.092 R)
• M10: 7,001,330 km (0.111 R)
• M11: 8,167,595 km (0.085 R)
• M12: 8,850,060 km (0.106 R)
• M13: 9,423,170 km (0.102 R)
• M14: 12,536,152 km (0.092 R)
• M15: 13,774,074 km (0.118 R)
• M16: 14,252,788 km (0.042 R)
• M17: 14,841,754 km (0.037 R)
• M18: 15,549,502 km (0.091 R)
• M19: 18,377,201 km (0.088 R)
• M20: 18,840,954 km (0.053 R)
• M21: 20,278,889 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 659.8

Radius: 10.1

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 3.5 AU - 3.96 AU

Year: 4726 Days

Day: 7.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 56,505,574 km

• M1: 127,757 km (0.116 R)
• M2: 501,452 km (0.086 R)
• M3: 913,145 km (0.08 R)
• M4: 1,249,441 km (0.027 R)
• M5: 1,633,459 km (0.113 R)
• M6: 2,495,592 km (0.1 R)
• M7: 3,132,430 km (0.116 R)
• M8: 4,358,684 km (0.114 R)
• M9: 4,987,593 km (0.093 R)
• M10: 5,733,638 km (0.091 R)
• M11: 7,621,563 km (0.039 R)
• M12: 8,014,706 km (0.105 R)
• M13: 9,849,823 km (0.104 R)
• M14: 10,887,733 km (0.075 R)
• M15: 11,525,918 km (0.094 R)
• M16: 12,188,935 km (0.089 R)
• M17: 13,231,034 km (0.112 R)
• M18: 15,434,910 km (0.049 R)
• M19: 19,281,819 km (0.054 R)
• M20: 19,812,144 km (0.089 R)
• M21: 21,673,740 km (0.114 R)
• M22: 24,180,401 km (0.084 R)
• M23: 25,266,632 km (0.119 R)
• M24: 26,710,550 km (0.083 R)
• M25: 28,293,595 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 930.8

Radius: 4.3

Gravity: 50.34 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 5.68 AU - 6.64 AU

Year: 10030 Days

Day: 21.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 56,505,574 km

• M1: 53,406 km (0.059 R)
• M2: 283,638 km (0.114 R)
• M3: 538,702 km (0.103 R)
• M4: 769,831 km (0.059 R)
• M5: 1,042,398 km (0.094 R)
• M6: 1,376,600 km (0.115 R)
• M7: 1,794,875 km (0.104 R)
• M8: 2,087,339 km (0.065 R)
• M9: 2,371,276 km (0.109 R)
• M10: 2,723,579 km (0.105 R)
• M11: 3,770,016 km (0.099 R)
• M12: 5,158,883 km (0.093 R)
• M13: 7,312,194 km (0.078 R)
• M14: 9,040,499 km (0.079 R)
• M15: 11,417,758 km (0.081 R)
• M16: 12,535,703 km (0.097 R)
• M17: 13,341,437 km (0.117 R)
• M18: 18,595,464 km (0.118 R)
• M19: 19,315,778 km (0.05 R)
• M20: 19,888,738 km (0.103 R)
• M21: 28,610,294 km (0.068 R)
• M22: 32,920,358 km (0.085 R)
• M23: 33,854,896 km (0.099 R)
• M24: 35,047,789 km (0.117 R)
• M25: 41,705,044 km (0.073 R)
• M26: 47,364,631 km (0.117 R)
• M27: 48,106,187 km (0.055 R)
• M28: 49,157,412 km (0.077 R)
• M29: 49,764,779 km (0.077 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 628.1

Radius: 4.1

Gravity: 37.36 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 7.21 AU - 7.71 AU

Year: 13366 Days

Day: 22.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 56,505,574 km

• M1: 52,958 km (0.118 R)
• M2: 230,381 km (0.105 R)
• M3: 604,226 km (0.114 R)
• M4: 891,454 km (0.112 R)
• M5: 1,066,334 km (0.035 R)
• M6: 1,575,266 km (0.108 R)
• M7: 2,910,576 km (0.053 R)
• M8: 3,076,031 km (0.036 R)
• M9: 4,508,281 km (0.099 R)
• M10: 10,561,161 km (0.092 R)
• M11: 12,429,040 km (0.098 R)
• M12: 18,276,222 km (0.102 R)
• M13: 18,921,288 km (0.066 R)
• M14: 19,748,714 km (0.064 R)
• M15: 21,034,807 km (0.113 R)
• M16: 22,742,766 km (0.101 R)
• M17: 23,867,742 km (0.03 R)
• M18: 25,029,369 km (0.055 R)
• M19: 26,431,550 km (0.094 R)
• M20: 26,841,598 km (0.032 R)
• M21: 34,598,996 km (0.091 R)
• M22: 36,462,686 km (0.111 R)
• M23: 43,298,710 km (0.109 R)
• M24: 47,844,840 km (0.047 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: 511 - 16,633 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit