🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.89

Radius: 1.53

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 0.66 AU - 0.68 AU

Year: 360 Days

Day: 28 Hours

Environment

Temp: -139 °C

Axial Tilt: 6.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 28,477,682 km

• M1: 36,053 km (0.098 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.4

Radius: 9.5

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.98 AU - 1.3 AU

Year: 798 Days

Day: 7.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 28,477,682 km

• M1: 118,631 km (0.077 R)
• M2: 1,079,498 km (0.044 R)
• M3: 1,433,447 km (0.111 R)
• M4: 1,970,653 km (0.115 R)
• M5: 3,065,111 km (0.069 R)
• M6: 3,679,509 km (0.057 R)
• M7: 4,150,593 km (0.051 R)
• M8: 4,605,670 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.7

Radius: 12.8

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 1.2 AU - 1.52 AU

Year: 1040 Days

Day: 9.5 Hours

Environment

Temp: -167 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 28,477,682 km

• M1: 159,471 km (0.052 R)
• M2: 585,676 km (0.119 R)
• M3: 1,127,818 km (0.07 R)
• M4: 1,595,012 km (0.113 R)
• M5: 2,500,678 km (0.069 R)
• M6: 3,161,003 km (0.103 R)
• M7: 3,855,137 km (0.093 R)
• M8: 4,396,981 km (0.116 R)
• M9: 4,816,902 km (0.111 R)
• M10: 5,363,084 km (0.12 R)
• M11: 6,186,171 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 780.5

Radius: 13.2

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 1.35 AU - 1.69 AU

Year: 1229 Days

Day: 13.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 28,477,682 km

• M1: 164,109 km (0.106 R)
• M2: 575,802 km (0.066 R)
• M3: 987,645 km (0.111 R)
• M4: 1,609,972 km (0.094 R)
• M5: 2,286,155 km (0.088 R)
• M6: 2,882,302 km (0.109 R)
• M7: 4,462,056 km (0.102 R)
• M8: 6,049,738 km (0.098 R)
• M9: 6,775,886 km (0.105 R)
• M10: 7,691,425 km (0.111 R)
• M11: 8,123,912 km (0.106 R)
• M12: 9,367,968 km (0.098 R)
• M13: 11,003,821 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 428

Radius: 8.9

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 1.49 AU - 1.73 AU

Year: 1340 Days

Day: 13.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 28,477,682 km

• M1: 110,852 km (0.089 R)
• M2: 509,979 km (0.111 R)
• M3: 2,046,648 km (0.109 R)
• M4: 3,081,567 km (0.069 R)
• M5: 3,524,376 km (0.089 R)
• M6: 4,074,747 km (0.108 R)
• M7: 4,502,148 km (0.065 R)
• M8: 5,073,612 km (0.087 R)
• M9: 5,406,916 km (0.113 R)
• M10: 6,984,425 km (0.075 R)
• M11: 7,982,842 km (0.103 R)
• M12: 10,198,685 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 335.2

Radius: 12.5

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.46 AU - 2.24 AU

Year: 1651 Days

Day: 9.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 28,477,682 km

• M1: 155,582 km (0.099 R)
• M2: 600,037 km (0.112 R)
• M3: 1,009,935 km (0.104 R)
• M4: 1,434,494 km (0.09 R)
• M5: 1,920,687 km (0.096 R)
• M6: 2,481,380 km (0.08 R)
• M7: 2,932,118 km (0.075 R)
• M8: 3,664,998 km (0.108 R)
• M9: 4,201,905 km (0.067 R)
• M10: 5,353,659 km (0.111 R)
• M11: 5,767,148 km (0.116 R)
• M12: 6,473,399 km (0.084 R)
• M13: 7,040,225 km (0.082 R)
• M14: 7,614,382 km (0.07 R)
• M15: 8,410,093 km (0.027 R)
• M16: 8,799,945 km (0.118 R)
• M17: 9,202,064 km (0.115 R)
• M18: 9,676,439 km (0.116 R)
• M19: 10,261,217 km (0.084 R)
• M20: 11,332,637 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198.3

Radius: 10.4

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 2.02 AU - 3.02 AU

Year: 2624 Days

Day: 15 Hours

Environment

Temp: -187 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 28,477,682 km

• M1: 166,951 km (0.076 R)
• M2: 729,738 km (0.044 R)
• M3: 1,152,352 km (0.095 R)
• M4: 1,534,725 km (0.112 R)
• M5: 2,401,345 km (0.094 R)
• M6: 3,137,067 km (0.12 R)
• M7: 3,913,480 km (0.111 R)
• M8: 4,283,436 km (0.083 R)
• M9: 4,832,909 km (0.107 R)
• M10: 6,942,538 km (0.033 R)
• M11: 8,399,920 km (0.058 R)
• M12: 9,635,599 km (0.074 R)
• M13: 10,116,706 km (0.048 R)
• M14: 10,851,381 km (0.104 R)
• M15: 11,478,495 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510

Radius: 12

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 3.41 AU - 4.65 AU

Year: 5307 Days

Day: 9.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 28,477,682 km

• M1: 149,299 km (0.098 R)
• M2: 526,285 km (0.084 R)
• M3: 1,060,200 km (0.104 R)
• M4: 1,989,652 km (0.043 R)
• M5: 3,341,268 km (0.049 R)
• M6: 4,018,648 km (0.078 R)
• M7: 4,709,790 km (0.045 R)
• M8: 5,562,946 km (0.03 R)
• M9: 5,996,930 km (0.067 R)
• M10: 6,391,419 km (0.081 R)
• M11: 8,480,105 km (0.107 R)
• M12: 10,202,874 km (0.082 R)
• M13: 11,768,715 km (0.105 R)
• M14: 13,031,770 km (0.101 R)
• M15: 13,905,122 km (0.06 R)
• M16: 14,436,943 km (0.066 R)
• M17: 17,855,254 km (0.057 R)
• M18: 19,652,373 km (0.097 R)
• M19: 21,567,226 km (0.12 R)
• M20: 25,685,356 km (0.079 R)
• M21: 27,304,454 km (0.064 R)
• M22: 28,139,060 km (0.045 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: 500 - 11,365 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit