🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.57 AU - 0.67 AU

Year: 310 Days

Day: 45.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 4.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 690.5

Radius: 9.3

Gravity: 7.98 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.74 AU - 0.8 AU

Year: 430 Days

Day: 8.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 31,561,336 km

• M1: 115,639 km (0.114 R)
• M2: 413,189 km (0.025 R)
• M3: 758,910 km (0.094 R)
• M4: 1,163,572 km (0.111 R)
• M5: 1,479,822 km (0.103 R)
• M6: 1,823,000 km (0.118 R)
• M7: 2,149,422 km (0.082 R)
• M8: 2,457,743 km (0.073 R)
• M9: 2,774,891 km (0.111 R)
• M10: 3,221,441 km (0.09 R)
• M11: 3,590,498 km (0.112 R)
• M12: 4,054,252 km (0.061 R)
• M13: 4,371,250 km (0.097 R)
• M14: 4,749,583 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 141.6

Radius: 12.6

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.61 AU - 1.01 AU

Year: 464 Days

Day: 14.3 Hours

Environment

Temp: -153 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 31,561,336 km

• M1: 156,779 km (0.113 R)
• M2: 626,516 km (0.109 R)
• M3: 1,057,208 km (0.119 R)
• M4: 1,512,734 km (0.072 R)
• M5: 2,016,878 km (0.103 R)
• M6: 2,485,569 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 302.2

Radius: 11.7

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.79 AU - 1.23 AU

Year: 645 Days

Day: 12.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,561,336 km

• M1: 145,559 km (0.111 R)
• M2: 545,883 km (0.048 R)
• M3: 932,144 km (0.118 R)
• M4: 1,747,004 km (0.104 R)
• M5: 2,309,342 km (0.12 R)
• M6: 3,143,350 km (0.086 R)
• M7: 3,787,220 km (0.096 R)
• M8: 4,795,509 km (0.069 R)
• M9: 5,258,664 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 23.2

Radius: 13.5

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.82 AU - 1.2 AU

Year: 645 Days

Day: 10.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 31,561,336 km

• M1: 167,849 km (0.095 R)
• M2: 617,241 km (0.092 R)
• M3: 1,748,500 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 299.8

Radius: 10.8

Gravity: 2.57 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.68 AU - 2.42 AU

Year: 1866 Days

Day: 11.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 31,561,336 km

• M1: 134,339 km (0.049 R)
• M2: 664,514 km (0.093 R)
• M3: 1,441,974 km (0.1 R)
• M4: 1,964,070 km (0.083 R)
• M5: 2,450,712 km (0.078 R)
• M6: 2,975,651 km (0.112 R)
• M7: 3,481,890 km (0.032 R)
• M8: 4,429,443 km (0.032 R)
• M9: 4,954,083 km (0.035 R)
• M10: 5,582,843 km (0.109 R)
• M11: 6,127,978 km (0.094 R)
• M12: 6,708,417 km (0.073 R)
• M13: 9,047,679 km (0.095 R)
• M14: 9,956,486 km (0.074 R)
• M15: 10,958,493 km (0.11 R)
• M16: 11,744,330 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906

Radius: 14.7

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 4.47 AU - 4.77 AU

Year: 6314 Days

Day: 11.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 31,561,336 km

• M1: 183,257 km (0.049 R)
• M2: 984,354 km (0.107 R)
• M3: 1,445,714 km (0.117 R)
• M4: 2,119,203 km (0.114 R)
• M5: 3,837,185 km (0.047 R)
• M6: 4,579,789 km (0.1 R)
• M7: 5,953,247 km (0.094 R)
• M8: 7,741,540 km (0.084 R)
• M9: 8,383,465 km (0.117 R)
• M10: 11,930,879 km (0.084 R)
• M11: 13,121,080 km (0.115 R)
• M12: 15,991,264 km (0.075 R)
• M13: 18,472,495 km (0.074 R)
• M14: 20,363,113 km (0.073 R)
• M15: 24,103,209 km (0.045 R)
• M16: 24,954,421 km (0.113 R)
• M17: 28,466,829 km (0.068 R)
• M18: 32,296,535 km (0.043 R)
• M19: 33,226,734 km (0.106 R)
• M20: 36,791,352 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 88.7

Radius: 3.8

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 7.74 AU - 8.6 AU

Year: 14848 Days

Day: 16.2 Hours

Environment

Temp: -232 °C

Axial Tilt: 107.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 31,561,336 km

• M1: 47,273 km (0.117 R)
• M2: 240,404 km (0.095 R)
• M3: 373,695 km (0.114 R)
• M4: 688,449 km (0.085 R)
• M5: 1,032,225 km (0.091 R)
• M6: 1,481,169 km (0.096 R)
• M7: 1,974,692 km (0.102 R)
• M8: 3,754,907 km (0.1 R)
• M9: 4,478,362 km (0.077 R)
• M10: 5,376,697 km (0.065 R)
• M11: 6,820,317 km (0.106 R)
• M12: 13,342,185 km (0.12 R)
• M13: 13,556,110 km (0.101 R)
• M14: 15,762,679 km (0.075 R)
• M15: 15,881,759 km (0.094 R)
• M16: 17,550,523 km (0.094 R)
• M17: 17,936,635 km (0.049 R)
• M18: 20,942,804 km (0.11 R)
• M19: 21,523,244 km (0.05 R)
• M20: 22,564,595 km (0.114 R)
• M21: 23,021,018 km (0.089 R)
• M22: 25,559,694 km (0.114 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 329 - 19,847 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit