🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.49 AU - 0.63 AU

Year: 266 Days

Day: 21.1 Hours

Environment

Temp: -114 °C

Axial Tilt: 44.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359.9

Radius: 8.2

Gravity: 5.35 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.74 AU - 0.96 AU

Year: 498 Days

Day: 8.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 13,013,832 km

• M1: 102,325 km (0.106 R)
• M2: 409,001 km (0.099 R)
• M3: 713,582 km (0.053 R)
• M4: 1,145,920 km (0.096 R)
• M5: 1,416,841 km (0.106 R)
• M6: 1,855,911 km (0.091 R)
• M7: 2,922,993 km (0.081 R)
• M8: 3,255,698 km (0.096 R)
• M9: 3,589,601 km (0.092 R)
• M10: 4,074,747 km (0.044 R)
• M11: 4,905,763 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.4

Radius: 9.5

Gravity: 1.94 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.9 AU - 1.2 AU

Year: 684 Days

Day: 12.7 Hours

Environment

Temp: -161 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 13,013,832 km

• M1: 119,230 km (0.039 R)
• M2: 468,541 km (0.079 R)
• M3: 892,501 km (0.045 R)
• M4: 1,391,559 km (0.09 R)
• M5: 1,716,636 km (0.107 R)
• M6: 2,036,925 km (0.114 R)
• M7: 2,810,346 km (0.083 R)
• M8: 3,226,527 km (0.116 R)
• M9: 3,792,156 km (0.078 R)
• M10: 4,301,687 km (0.091 R)
• M11: 4,784,439 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 489.6

Radius: 11.1

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.96 AU - 1.48 AU

Year: 857 Days

Day: 9.9 Hours

Environment

Temp: -158 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 13,013,832 km

• M1: 138,079 km (0.118 R)
• M2: 492,327 km (0.112 R)
• M3: 935,286 km (0.097 R)
• M4: 1,343,688 km (0.106 R)
• M5: 2,062,057 km (0.116 R)
• M6: 2,817,227 km (0.109 R)
• M7: 4,300,490 km (0.103 R)
• M8: 4,737,465 km (0.075 R)
• M9: 5,239,665 km (0.084 R)
• M10: 6,209,359 km (0.119 R)
• M11: 7,160,801 km (0.102 R)
• M12: 7,567,707 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 670.5

Radius: 11.4

Gravity: 5.16 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.56 AU - 1.8 AU

Year: 1385 Days

Day: 11.1 Hours

Environment

Temp: -182 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 13,013,832 km

• M1: 141,819 km (0.114 R)
• M2: 524,341 km (0.086 R)
• M3: 1,041,949 km (0.102 R)
• M4: 2,377,409 km (0.117 R)
• M5: 2,862,406 km (0.103 R)
• M6: 4,261,445 km (0.087 R)
• M7: 4,745,693 km (0.081 R)
• M8: 5,627,274 km (0.089 R)
• M9: 6,687,773 km (0.042 R)
• M10: 7,086,451 km (0.115 R)
• M11: 7,741,091 km (0.091 R)
• M12: 8,637,631 km (0.112 R)
• M13: 9,539,557 km (0.087 R)
• M14: 11,181,094 km (0.081 R)
• M15: 11,708,427 km (0.06 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.1

Radius: 9.7

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.45 AU - 1.97 AU

Year: 1422 Days

Day: 9.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 13,013,832 km

• M1: 123,568 km (0.105 R)
• M2: 589,565 km (0.031 R)
• M3: 1,003,802 km (0.095 R)
• M4: 1,356,853 km (0.064 R)
• M5: 2,049,940 km (0.098 R)
• M6: 2,813,487 km (0.076 R)
• M7: 3,337,229 km (0.032 R)
• M8: 3,924,999 km (0.077 R)
• M9: 4,278,798 km (0.082 R)
• M10: 4,698,720 km (0.112 R)
• M11: 5,554,120 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 659.3

Radius: 13.6

Gravity: 3.56 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 2.61 AU - 4.07 AU

Year: 3881 Days

Day: 7.2 Hours

Environment

Temp: -201 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 13,013,832 km

• M1: 170,542 km (0.029 R)
• M2: 608,714 km (0.041 R)
• M3: 1,160,879 km (0.096 R)
• M4: 1,652,757 km (0.105 R)
• M5: 2,358,410 km (0.103 R)
• M6: 3,057,930 km (0.057 R)
• M7: 4,849,963 km (0.1 R)
• M8: 5,358,446 km (0.114 R)
• M9: 5,930,508 km (0.052 R)
• M10: 8,493,270 km (0.053 R)
• M11: 9,582,641 km (0.116 R)
• M12: 10,678,745 km (0.106 R)
• M13: 11,902,007 km (0.108 R)
• M14: 12,689,041 km (0.107 R)
• M15: 13,362,979 km (0.071 R)
• M16: 13,909,311 km (0.095 R)
• M17: 16,867,459 km (0.079 R)
• M18: 17,447,300 km (0.081 R)
• M19: 18,160,434 km (0.079 R)
• M20: 19,017,031 km (0.067 R)
• M21: 20,745,036 km (0.109 R)
• M22: 21,545,684 km (0.035 R)
• M23: 22,022,303 km (0.101 R)
• M24: 23,137,854 km (0.106 R)
• M25: 23,999,238 km (0.049 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61.8

Radius: 10.6

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 3.07 AU - 4.53 AU

Year: 4710 Days

Day: 13.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 13,013,832 km

• M1: 133,740 km (0.077 R)
• M2: 789,578 km (0.081 R)
• M3: 1,206,806 km (0.059 R)
• M4: 2,442,933 km (0.087 R)
• M5: 3,041,474 km (0.098 R)
• M6: 3,399,163 km (0.109 R)
• M7: 4,761,999 km (0.103 R)
• M8: 6,901,997 km (0.045 R)
• M9: 8,411,589 km (0.081 R)
• M10: 11,003,073 km (0.109 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: 304 - 16,890 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit