🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.52 AU - 0.58 AU

Year: 259 Days

Day: 19.9 Hours

Environment

Temp: -122 °C

Axial Tilt: 6.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.4

Radius: 11.3

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.78 AU - 0.86 AU

Year: 472 Days

Day: 12 Hours

Environment

Temp: -143 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 50,046,427 km

• M1: 140,622 km (0.037 R)
• M2: 550,819 km (0.113 R)
• M3: 929,751 km (0.09 R)
• M4: 1,309,580 km (0.12 R)
• M5: 1,730,847 km (0.053 R)
• M6: 2,109,779 km (0.097 R)
• M7: 2,744,971 km (0.111 R)
• M8: 3,265,722 km (0.094 R)
• M9: 3,814,746 km (0.117 R)
• M10: 4,548,523 km (0.106 R)
• M11: 5,158,733 km (0.079 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 438.9

Radius: 11.7

Gravity: 3.21 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.84 AU - 1.08 AU

Year: 598 Days

Day: 11.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 50,046,427 km

• M1: 145,559 km (0.072 R)
• M2: 531,820 km (0.087 R)
• M3: 1,090,868 km (0.084 R)
• M4: 1,465,760 km (0.117 R)
• M5: 1,961,228 km (0.093 R)
• M6: 2,586,996 km (0.068 R)
• M7: 3,318,530 km (0.12 R)
• M8: 3,739,947 km (0.029 R)
• M9: 4,601,481 km (0.09 R)
• M10: 5,797,815 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.7

Radius: 12.7

Gravity: 4.85 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.44 AU - 2.36 AU

Year: 1665 Days

Day: 12.2 Hours

Environment

Temp: -188 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 50,046,427 km

• M1: 157,975 km (0.118 R)
• M2: 575,503 km (0.115 R)
• M3: 1,027,887 km (0.116 R)
• M4: 1,498,522 km (0.112 R)
• M5: 2,292,887 km (0.111 R)
• M6: 2,952,314 km (0.117 R)
• M7: 3,840,028 km (0.081 R)
• M8: 4,337,291 km (0.118 R)
• M9: 4,815,256 km (0.095 R)
• M10: 6,093,420 km (0.063 R)
• M11: 7,390,883 km (0.103 R)
• M12: 9,506,346 km (0.047 R)
• M13: 11,769,612 km (0.113 R)
• M14: 12,348,107 km (0.1 R)
• M15: 13,645,869 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.4

Radius: 13.4

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 2.49 AU - 2.91 AU

Year: 2821 Days

Day: 8.1 Hours

Environment

Temp: -194 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 50,046,427 km

• M1: 166,802 km (0.082 R)
• M2: 643,271 km (0.088 R)
• M3: 1,159,084 km (0.098 R)
• M4: 1,597,406 km (0.086 R)
• M5: 2,250,102 km (0.117 R)
• M6: 2,933,614 km (0.027 R)
• M7: 3,393,777 km (0.102 R)
• M8: 4,296,900 km (0.12 R)
• M9: 4,761,551 km (0.079 R)
• M10: 5,619,644 km (0.028 R)
• M11: 6,229,704 km (0.073 R)
• M12: 6,743,722 km (0.077 R)
• M13: 7,673,772 km (0.053 R)
• M14: 9,226,897 km (0.07 R)
• M15: 11,058,424 km (0.098 R)
• M16: 11,895,873 km (0.094 R)
• M17: 12,393,136 km (0.087 R)
• M18: 13,473,981 km (0.059 R)
• M19: 16,424,949 km (0.089 R)
• M20: 17,042,339 km (0.07 R)
• M21: 18,488,053 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.7

Radius: 12.4

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 3.98 AU - 6.56 AU

Year: 7692 Days

Day: 7.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,046,427 km

• M1: 156,180 km (0.115 R)
• M2: 785,538 km (0.114 R)
• M3: 1,410,558 km (0.084 R)
• M4: 6,305,700 km (0.047 R)
• M5: 7,693,220 km (0.086 R)
• M6: 10,121,942 km (0.054 R)
• M7: 13,522,002 km (0.102 R)
• M8: 14,451,902 km (0.081 R)
• M9: 18,665,177 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906.4

Radius: 11.3

Gravity: 7.1 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 4.97 AU - 6.97 AU

Year: 9275 Days

Day: 14.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 50,046,427 km

• M1: 140,772 km (0.097 R)
• M2: 609,312 km (0.054 R)
• M3: 1,271,582 km (0.119 R)
• M4: 2,154,359 km (0.079 R)
• M5: 3,169,680 km (0.106 R)
• M6: 3,580,027 km (0.107 R)
• M7: 3,998,751 km (0.039 R)
• M8: 6,378,704 km (0.119 R)
• M9: 6,799,672 km (0.116 R)
• M10: 7,362,010 km (0.032 R)
• M11: 8,130,644 km (0.112 R)
• M12: 8,811,165 km (0.104 R)
• M13: 9,334,159 km (0.111 R)
• M14: 10,494,739 km (0.085 R)
• M15: 11,192,015 km (0.061 R)
• M16: 12,441,905 km (0.064 R)
• M17: 13,346,075 km (0.112 R)
• M18: 22,048,033 km (0.061 R)
• M19: 23,551,193 km (0.069 R)
• M20: 23,914,716 km (0.096 R)
• M21: 25,596,644 km (0.066 R)
• M22: 26,271,630 km (0.042 R)
• M23: 30,789,037 km (0.084 R)
• M24: 33,003,684 km (0.12 R)
• M25: 33,918,624 km (0.052 R)
• M26: 35,085,937 km (0.046 R)
• M27: 39,255,678 km (0.101 R)
• M28: 43,063,841 km (0.112 R)
• M29: 49,301,624 km (0.079 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 537 - 18,889 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit