🌌 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: 4.19

Radius: 1.77

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.51 AU - 0.55 AU

Year: 253 Days

Day: 26.4 Hours

Environment

Temp: -117 °C

Axial Tilt: 5.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 17.7

Radius: 12.3

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.76 AU - 1.04 AU

Year: 560 Days

Day: 12.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 57,739,825 km

• M1: 153,039 km (0.114 R)
• M2: 654,341 km (0.117 R)
• M3: 1,563,148 km (0.083 R)
• M4: 2,034,381 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 300.8

Radius: 13.2

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.88 AU - 1.24 AU

Year: 716 Days

Day: 9.7 Hours

Environment

Temp: -165 °C

Axial Tilt: 116.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 57,739,825 km

• M1: 165,904 km (0.114 R)
• M2: 650,601 km (0.031 R)
• M3: 1,327,083 km (0.062 R)
• M4: 1,828,684 km (0.103 R)
• M5: 2,280,470 km (0.065 R)
• M6: 2,714,154 km (0.096 R)
• M7: 3,649,440 km (0.117 R)
• M8: 4,789,376 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406

Radius: 9.5

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.85 AU - 1.87 AU

Year: 1664 Days

Day: 5.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 57,739,825 km

• M1: 118,631 km (0.085 R)
• M2: 604,974 km (0.104 R)
• M3: 1,018,313 km (0.092 R)
• M4: 1,370,616 km (0.083 R)
• M5: 1,737,280 km (0.094 R)
• M6: 2,710,863 km (0.086 R)
• M7: 3,461,695 km (0.099 R)
• M8: 4,601,930 km (0.088 R)
• M9: 5,603,936 km (0.102 R)
• M10: 6,745,069 km (0.106 R)
• M11: 7,396,568 km (0.114 R)
• M12: 8,565,226 km (0.09 R)
• M13: 9,030,027 km (0.068 R)
• M14: 9,389,660 km (0.065 R)
• M15: 9,947,062 km (0.094 R)
• M16: 10,857,813 km (0.049 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59.4

Radius: 11.3

Gravity: 0.47 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 3 AU - 3.46 AU

Year: 3808 Days

Day: 10.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 57,739,825 km

• M1: 189,092 km (0.079 R)
• M2: 997,369 km (0.112 R)
• M3: 1,902,586 km (0.091 R)
• M4: 3,319,128 km (0.053 R)
• M5: 4,439,616 km (0.102 R)
• M6: 6,320,660 km (0.108 R)
• M7: 7,717,754 km (0.066 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 913.4

Radius: 6.7

Gravity: 20.35 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 5.86 AU - 8.7 AU

Year: 12886 Days

Day: 24.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 57,739,825 km

• M1: 83,326 km (0.113 R)
• M2: 298,149 km (0.119 R)
• M3: 956,678 km (0.093 R)
• M4: 1,244,355 km (0.096 R)
• M5: 1,906,176 km (0.047 R)
• M6: 2,387,133 km (0.091 R)
• M7: 4,258,603 km (0.111 R)
• M8: 4,542,539 km (0.069 R)
• M9: 4,940,619 km (0.101 R)
• M10: 5,655,697 km (0.114 R)
• M11: 6,478,485 km (0.107 R)
• M12: 8,023,233 km (0.03 R)
• M13: 8,654,985 km (0.109 R)
• M14: 9,583,688 km (0.116 R)
• M15: 14,454,595 km (0.092 R)
• M16: 18,932,059 km (0.094 R)
• M17: 19,874,376 km (0.09 R)
• M18: 20,136,621 km (0.109 R)
• M19: 21,852,060 km (0.073 R)
• M20: 23,564,806 km (0.079 R)
• M21: 28,788,913 km (0.061 R)
• M22: 29,237,408 km (0.102 R)
• M23: 33,733,572 km (0.11 R)
• M24: 34,483,207 km (0.091 R)
• M25: 36,275,389 km (0.045 R)
• M26: 40,323,208 km (0.052 R)
• M27: 41,451,326 km (0.082 R)
• M28: 44,363,548 km (0.064 R)
• M29: 48,349,583 km (0.086 R)
• M30: 51,573,417 km (0.099 R)
• M31: 52,567,794 km (0.07 R)
• M32: 57,377,964 km (0.076 R)
• M33: 59,707,652 km (0.109 R)
• M34: 60,803,905 km (0.073 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 390.7

Radius: 6.5

Gravity: 9.25 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 7.08 AU - 10.78 AU

Year: 17506 Days

Day: 18.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 57,739,825 km

• M1: 86,468 km (0.119 R)
• M2: 521,648 km (0.104 R)
• M3: 1,036,863 km (0.116 R)
• M4: 1,458,130 km (0.047 R)
• M5: 2,229,158 km (0.092 R)
• M6: 2,660,449 km (0.118 R)
• M7: 3,448,829 km (0.109 R)
• M8: 4,142,664 km (0.11 R)
• M9: 4,569,916 km (0.108 R)
• M10: 5,953,247 km (0.103 R)
• M11: 7,031,848 km (0.086 R)
• M12: 7,375,025 km (0.074 R)
• M13: 13,690,000 km (0.101 R)
• M14: 18,210,698 km (0.098 R)
• M15: 20,892,539 km (0.104 R)
• M16: 25,391,695 km (0.085 R)
• M17: 29,052,206 km (0.09 R)
• M18: 33,528,473 km (0.112 R)
• M19: 50,458,763 km (0.109 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 545 - 12,430 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit