🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.58 AU - 0.7 AU

Year: 336 Days

Day: 16.7 Hours

Environment

Temp: -138 °C

Axial Tilt: 5.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 88,956,944 km

• M1: 503,098 km (0.095 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 802.8

Radius: 14

Gravity: 4.1 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.63 AU - 0.93 AU

Year: 452 Days

Day: 12.3 Hours

Environment

Temp: -155 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 88,956,944 km

• M1: 174,132 km (0.077 R)
• M2: 813,513 km (0.118 R)
• M3: 1,299,108 km (0.119 R)
• M4: 1,816,866 km (0.105 R)
• M5: 2,406,581 km (0.082 R)
• M6: 3,308,207 km (0.063 R)
• M7: 3,897,623 km (0.115 R)
• M8: 4,983,853 km (0.03 R)
• M9: 5,555,915 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 666

Radius: 9.3

Gravity: 7.7 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.75 AU - 1.13 AU

Year: 598 Days

Day: 10.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 88,956,944 km

• M1: 115,789 km (0.065 R)
• M2: 600,935 km (0.093 R)
• M3: 930,798 km (0.066 R)
• M4: 1,222,065 km (0.065 R)
• M5: 1,590,525 km (0.046 R)
• M6: 2,587,445 km (0.103 R)
• M7: 3,815,045 km (0.079 R)
• M8: 4,934,935 km (0.086 R)
• M9: 6,012,189 km (0.117 R)
• M10: 7,048,154 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536.1

Radius: 8.1

Gravity: 8.17 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.87 AU - 1.13 AU

Year: 656 Days

Day: 8.9 Hours

Environment

Temp: -168 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 88,956,944 km

• M1: 100,679 km (0.111 R)
• M2: 362,326 km (0.1 R)
• M3: 893,997 km (0.106 R)
• M4: 1,197,830 km (0.116 R)
• M5: 1,533,677 km (0.114 R)
• M6: 1,797,269 km (0.062 R)
• M7: 2,073,277 km (0.109 R)
• M8: 2,347,939 km (0.092 R)
• M9: 2,890,680 km (0.074 R)
• M10: 3,360,118 km (0.115 R)
• M11: 3,823,871 km (0.089 R)
• M12: 4,078,636 km (0.066 R)
• M13: 4,879,284 km (0.109 R)
• M14: 5,145,568 km (0.079 R)
• M15: 5,439,229 km (0.107 R)
• M16: 6,041,360 km (0.11 R)
• M17: 6,427,323 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.2

Radius: 8.6

Gravity: 11.51 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.8 AU - 1.3 AU

Year: 706 Days

Day: 8.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 88,956,944 km

• M1: 106,962 km (0.076 R)
• M2: 650,900 km (0.073 R)
• M3: 969,843 km (0.097 R)
• M4: 1,498,971 km (0.081 R)
• M5: 1,785,750 km (0.106 R)
• M6: 2,461,633 km (0.118 R)
• M7: 3,338,576 km (0.082 R)
• M8: 3,701,949 km (0.119 R)
• M9: 3,984,090 km (0.066 R)
• M10: 4,575,152 km (0.091 R)
• M11: 5,390,011 km (0.06 R)
• M12: 6,701,985 km (0.075 R)
• M13: 7,490,814 km (0.087 R)
• M14: 7,968,630 km (0.11 R)
• M15: 8,240,000 km (0.114 R)
• M16: 8,619,979 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960.1

Radius: 15

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.93 AU - 1.29 AU

Year: 767 Days

Day: 14.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 142.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 88,956,944 km

• M1: 188,194 km (0.086 R)
• M2: 737,069 km (0.061 R)
• M3: 1,304,045 km (0.095 R)
• M4: 1,863,541 km (0.102 R)
• M5: 2,483,325 km (0.114 R)
• M6: 3,133,776 km (0.114 R)
• M7: 3,731,868 km (0.111 R)
• M8: 5,031,575 km (0.077 R)
• M9: 5,578,505 km (0.12 R)
• M10: 6,144,284 km (0.114 R)
• M11: 6,973,505 km (0.091 R)
• M12: 8,279,045 km (0.076 R)
• M13: 9,319,499 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439

Radius: 10.5

Gravity: 3.98 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.53 AU - 1.89 AU

Year: 1467 Days

Day: 9 Hours

Environment

Temp: -184 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 88,956,944 km

• M1: 130,599 km (0.069 R)
• M2: 913,744 km (0.061 R)
• M3: 1,525,599 km (0.117 R)
• M4: 1,950,008 km (0.087 R)
• M5: 3,309,404 km (0.094 R)
• M6: 3,961,950 km (0.048 R)
• M7: 4,461,158 km (0.118 R)
• M8: 5,258,216 km (0.082 R)
• M9: 5,606,779 km (0.098 R)
• M10: 7,980,897 km (0.065 R)
• M11: 9,241,857 km (0.091 R)
• M12: 10,406,327 km (0.054 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 973

Radius: 5.4

Gravity: 33.37 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 8.82 AU - 11.48 AU

Year: 21213 Days

Day: 23.2 Hours

Environment

Temp: -235 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 88,956,944 km

• M1: 78,988 km (0.087 R)
• M2: 391,797 km (0.116 R)
• M3: 1,855,911 km (0.052 R)
• M4: 3,409,036 km (0.097 R)
• M5: 5,179,377 km (0.056 R)
• M6: 5,713,591 km (0.097 R)
• M7: 10,334,071 km (0.098 R)
• M8: 11,928,037 km (0.097 R)
• M9: 13,451,242 km (0.056 R)
• M10: 15,263,172 km (0.089 R)
• M11: 21,354,797 km (0.078 R)
• M12: 23,808,800 km (0.068 R)
• M13: 25,855,598 km (0.101 R)
• M14: 27,526,607 km (0.094 R)
• M15: 30,036,709 km (0.075 R)
• M16: 30,687,161 km (0.052 R)
• M17: 34,081,537 km (0.071 R)
• M18: 44,226,965 km (0.094 R)
• M19: 46,264,787 km (0.03 R)
• M20: 63,367,564 km (0.119 R)
• M21: 64,436,740 km (0.098 R)
• M22: 65,518,033 km (0.101 R)
• M23: 78,465,579 km (0.107 R)
• M24: 79,698,266 km (0.116 R)
• M25: 79,946,448 km (0.119 R)
• M26: 88,690,594 km (0.077 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 529 - 19,354 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit