🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.76

Radius: 1.25

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.44 AU - 0.7 AU

Year: 282 Days

Day: 37.5 Hours

Environment

Temp: -121 °C

Axial Tilt: 11 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 640.9

Radius: 12.4

Gravity: 4.17 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.7 AU - 0.76 AU

Year: 409 Days

Day: 9.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,347,476 km

• M1: 156,779 km (0.114 R)
• M2: 546,631 km (0.093 R)
• M3: 983,008 km (0.065 R)
• M4: 1,488,349 km (0.054 R)
• M5: 1,878,650 km (0.081 R)
• M6: 2,329,688 km (0.063 R)
• M7: 2,822,762 km (0.113 R)
• M8: 4,300,490 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687.8

Radius: 12.7

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.75 AU - 0.95 AU

Year: 514 Days

Day: 6.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 42,347,476 km

• M1: 157,975 km (0.075 R)
• M2: 594,652 km (0.12 R)
• M3: 1,229,844 km (0.12 R)
• M4: 1,709,305 km (0.12 R)
• M5: 2,437,548 km (0.099 R)
• M6: 2,957,101 km (0.118 R)
• M7: 4,011,317 km (0.098 R)
• M8: 4,423,908 km (0.037 R)
• M9: 4,833,507 km (0.093 R)
• M10: 5,385,523 km (0.094 R)
• M11: 6,577,968 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 607.6

Radius: 11.4

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.92 AU - 1.1 AU

Year: 666 Days

Day: 12.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 42,347,476 km

• M1: 141,819 km (0.119 R)
• M2: 549,174 km (0.072 R)
• M3: 947,553 km (0.064 R)
• M4: 1,336,956 km (0.079 R)
• M5: 1,697,786 km (0.105 R)
• M6: 2,425,131 km (0.079 R)
• M7: 2,810,196 km (0.107 R)
• M8: 3,544,422 km (0.108 R)
• M9: 4,880,481 km (0.056 R)
• M10: 5,305,488 km (0.099 R)
• M11: 6,730,857 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642.8

Radius: 14.6

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.41 AU - 1.61 AU

Year: 1217 Days

Day: 5.3 Hours

Environment

Temp: -168 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,347,476 km

• M1: 181,612 km (0.11 R)
• M2: 643,420 km (0.104 R)
• M3: 1,336,956 km (0.058 R)
• M4: 2,656,559 km (0.074 R)
• M5: 3,127,643 km (0.04 R)
• M6: 3,701,650 km (0.088 R)
• M7: 5,648,367 km (0.098 R)
• M8: 6,210,406 km (0.114 R)
• M9: 6,977,693 km (0.068 R)
• M10: 9,938,684 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 703

Radius: 13.6

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.02 AU - 2.12 AU

Year: 1954 Days

Day: 13.5 Hours

Environment

Temp: -181 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 42,347,476 km

• M1: 170,990 km (0.095 R)
• M2: 626,217 km (0.105 R)
• M3: 1,067,082 km (0.119 R)
• M4: 1,820,456 km (0.098 R)
• M5: 2,243,968 km (0.099 R)
• M6: 3,296,090 km (0.113 R)
• M7: 3,843,768 km (0.083 R)
• M8: 4,471,929 km (0.066 R)
• M9: 6,884,344 km (0.058 R)
• M10: 7,610,193 km (0.08 R)
• M11: 8,142,163 km (0.105 R)
• M12: 8,986,793 km (0.08 R)
• M13: 10,273,634 km (0.1 R)
• M14: 10,961,634 km (0.12 R)
• M15: 12,189,534 km (0.037 R)
• M16: 14,646,080 km (0.078 R)
• M17: 15,285,312 km (0.118 R)
• M18: 15,800,677 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.8

Radius: 10.1

Gravity: 1.4 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 2.49 AU - 3.77 AU

Year: 3633 Days

Day: 7 Hours

Environment

Temp: -214 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,347,476 km

• M1: 125,961 km (0.079 R)
• M2: 516,711 km (0.06 R)
• M3: 906,563 km (0.089 R)
• M4: 2,165,878 km (0.098 R)
• M5: 3,193,017 km (0.071 R)
• M6: 4,478,511 km (0.089 R)
• M7: 5,844,490 km (0.111 R)
• M8: 7,037,981 km (0.074 R)
• M9: 7,948,135 km (0.086 R)
• M10: 8,627,459 km (0.057 R)
• M11: 9,441,570 km (0.111 R)
• M12: 12,579,984 km (0.026 R)
• M13: 13,298,353 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.1

Radius: 10.8

Gravity: 7.53 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 4.72 AU - 5.28 AU

Year: 7334 Days

Day: 5 Hours

Environment

Temp: -225 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 42,347,476 km

• M1: 135,087 km (0.111 R)
• M2: 519,703 km (0.029 R)
• M3: 1,021,753 km (0.049 R)
• M4: 1,778,868 km (0.111 R)
• M5: 2,735,846 km (0.068 R)
• M6: 3,420,855 km (0.074 R)
• M7: 3,955,368 km (0.06 R)
• M8: 5,967,609 km (0.108 R)
• M9: 10,194,945 km (0.105 R)
• M10: 13,702,417 km (0.085 R)
• M11: 20,243,733 km (0.096 R)
• M12: 22,734,688 km (0.112 R)
• M13: 25,064,974 km (0.108 R)
• M14: 25,603,676 km (0.116 R)
• M15: 26,704,267 km (0.053 R)
• M16: 27,360,703 km (0.1 R)
• M17: 27,740,532 km (0.107 R)
• M18: 29,097,983 km (0.117 R)
• M19: 32,366,247 km (0.042 R)
• M20: 33,112,441 km (0.064 R)
• M21: 34,418,431 km (0.045 R)
• M22: 39,743,517 km (0.115 R)
• M23: 40,231,056 km (0.056 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 167 - 17,085 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit