🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.25

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.4 AU - 0.66 AU

Year: 253 Days

Day: 43.2 Hours

Environment

Temp: -115 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,566,368 km

• M1: 199,713 km (0.106 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 771.5

Radius: 8.8

Gravity: 9.96 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.61 AU - 0.75 AU

Year: 368 Days

Day: 6.1 Hours

Environment

Temp: -134 °C

Axial Tilt: 69.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 54,566,368 km

• M1: 109,506 km (0.074 R)
• M2: 437,574 km (0.063 R)
• M3: 835,055 km (0.114 R)
• M4: 1,126,622 km (0.106 R)
• M5: 1,435,691 km (0.077 R)
• M6: 1,735,485 km (0.105 R)
• M7: 2,085,694 km (0.118 R)
• M8: 2,558,572 km (0.026 R)
• M9: 3,657,518 km (0.114 R)
• M10: 4,063,976 km (0.111 R)
• M11: 4,360,778 km (0.04 R)
• M12: 4,789,077 km (0.032 R)
• M13: 5,089,918 km (0.096 R)
• M14: 5,435,339 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745.8

Radius: 11.3

Gravity: 5.84 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.63 AU - 0.93 AU

Year: 452 Days

Day: 9.8 Hours

Environment

Temp: -149 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 54,566,368 km

• M1: 140,622 km (0.107 R)
• M2: 543,788 km (0.047 R)
• M3: 1,146,967 km (0.113 R)
• M4: 1,721,273 km (0.058 R)
• M5: 2,158,398 km (0.112 R)
• M6: 2,549,148 km (0.115 R)
• M7: 2,932,567 km (0.087 R)
• M8: 3,549,658 km (0.045 R)
• M9: 4,016,852 km (0.098 R)
• M10: 4,949,446 km (0.063 R)
• M11: 5,417,088 km (0.073 R)
• M12: 5,843,891 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.4

Radius: 12.7

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.82 AU - 1.3 AU

Year: 716 Days

Day: 11.4 Hours

Environment

Temp: -171 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 54,566,368 km

• M1: 157,975 km (0.118 R)
• M2: 590,014 km (0.052 R)
• M3: 1,432,100 km (0.113 R)
• M4: 2,900,852 km (0.099 R)
• M5: 4,989,687 km (0.1 R)
• M6: 5,975,986 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260.8

Radius: 10.3

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.76 AU - 1.82 AU

Year: 1571 Days

Day: 6.4 Hours

Environment

Temp: -184 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 54,566,368 km

• M1: 128,505 km (0.114 R)
• M2: 531,072 km (0.114 R)
• M3: 984,653 km (0.111 R)
• M4: 2,210,608 km (0.038 R)
• M5: 3,104,904 km (0.101 R)
• M6: 4,341,330 km (0.07 R)
• M7: 4,776,810 km (0.101 R)
• M8: 5,357,249 km (0.069 R)
• M9: 5,695,191 km (0.091 R)
• M10: 7,803,773 km (0.103 R)
• M11: 8,265,282 km (0.069 R)
• M12: 8,853,800 km (0.086 R)
• M13: 9,327,726 km (0.068 R)
• M14: 9,701,422 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 490.8

Radius: 8.5

Gravity: 6.79 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 2.18 AU - 2.92 AU

Year: 2671 Days

Day: 8.3 Hours

Environment

Temp: -203 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 54,566,368 km

• M1: 105,766 km (0.107 R)
• M2: 378,782 km (0.057 R)
• M3: 747,092 km (0.097 R)
• M4: 1,016,069 km (0.049 R)
• M5: 1,342,491 km (0.054 R)
• M6: 1,738,776 km (0.086 R)
• M7: 2,250,700 km (0.035 R)
• M8: 3,628,048 km (0.101 R)
• M9: 3,906,449 km (0.056 R)
• M10: 4,320,387 km (0.067 R)
• M11: 4,655,187 km (0.027 R)
• M12: 5,789,886 km (0.098 R)
• M13: 7,566,361 km (0.059 R)
• M14: 7,899,516 km (0.054 R)
• M15: 8,858,139 km (0.092 R)
• M16: 9,228,393 km (0.114 R)
• M17: 10,813,682 km (0.07 R)
• M18: 12,614,840 km (0.098 R)
• M19: 13,697,630 km (0.051 R)
• M20: 14,700,684 km (0.113 R)
• M21: 15,654,370 km (0.052 R)
• M22: 16,801,337 km (0.074 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 149.5

Radius: 3.7

Gravity: 10.92 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 6.27 AU - 9.71 AU

Year: 14816 Days

Day: 16.9 Hours

Environment

Temp: -232 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 54,566,368 km

• M1: 49,966 km (0.099 R)
• M2: 260,899 km (0.078 R)
• M3: 2,354,670 km (0.054 R)
• M4: 4,617,039 km (0.076 R)
• M5: 7,661,655 km (0.038 R)
• M6: 8,137,376 km (0.056 R)
• M7: 8,341,428 km (0.062 R)
• M8: 9,912,056 km (0.062 R)
• M9: 11,876,725 km (0.075 R)
• M10: 21,233,922 km (0.095 R)
• M11: 24,039,480 km (0.109 R)
• M12: 27,263,614 km (0.06 R)
• M13: 29,597,939 km (0.098 R)
• M14: 32,878,620 km (0.036 R)
• M15: 33,709,038 km (0.052 R)
• M16: 34,340,790 km (0.107 R)
• M17: 34,659,583 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 195.5

Radius: 6.9

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 9.01 AU - 12.25 AU

Year: 22736 Days

Day: 23.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,566,368 km

• M1: 85,869 km (0.096 R)
• M2: 344,075 km (0.113 R)
• M3: 3,051,797 km (0.116 R)
• M4: 5,851,222 km (0.099 R)
• M5: 6,073,374 km (0.084 R)
• M6: 6,417,300 km (0.113 R)
• M7: 6,814,482 km (0.102 R)
• M8: 9,150,004 km (0.084 R)
• M9: 19,833,237 km (0.116 R)
• M10: 21,806,582 km (0.099 R)
• M11: 23,346,692 km (0.079 R)
• M12: 31,576,071 km (0.091 R)
• M13: 47,091,764 km (0.118 R)
• M14: 48,286,752 km (0.088 R)
• M15: 51,049,226 km (0.111 R)
• M16: 53,753,208 km (0.072 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: 237 - 12,466 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit