🌌 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: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.51 AU - 0.61 AU

Year: 275 Days

Day: 30.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 24 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 53,002,749 km

• M1: 55,950 km (0.11 R)
• M2: 132,095 km (0.107 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.51 AU - 0.71 AU

Year: 313 Days

Day: 22.7 Hours

Environment

Temp: -119 °C

Axial Tilt: 23.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 408.4

Radius: 11

Gravity: 3.38 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.59 AU - 0.93 AU

Year: 435 Days

Day: 13.8 Hours

Environment

Temp: -145 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,002,749 km

• M1: 136,732 km (0.063 R)
• M2: 624,422 km (0.049 R)
• M3: 997,818 km (0.106 R)
• M4: 1,349,672 km (0.077 R)
• M5: 1,695,841 km (0.052 R)
• M6: 2,062,655 km (0.117 R)
• M7: 2,528,204 km (0.062 R)
• M8: 2,890,231 km (0.057 R)
• M9: 3,286,964 km (0.103 R)
• M10: 3,672,628 km (0.098 R)
• M11: 4,088,809 km (0.062 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 949.2

Radius: 13.4

Gravity: 5.29 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.83 AU - 1.09 AU

Year: 617 Days

Day: 8.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,002,749 km

• M1: 166,652 km (0.097 R)
• M2: 601,383 km (0.055 R)
• M3: 1,093,860 km (0.099 R)
• M4: 1,527,245 km (0.098 R)
• M5: 2,163,185 km (0.099 R)
• M6: 2,681,691 km (0.103 R)
• M7: 3,130,784 km (0.093 R)
• M8: 4,561,089 km (0.086 R)
• M9: 5,607,676 km (0.086 R)
• M10: 6,228,208 km (0.082 R)
• M11: 6,872,676 km (0.085 R)
• M12: 7,311,746 km (0.066 R)
• M13: 7,769,665 km (0.103 R)
• M14: 8,344,420 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100.8

Radius: 12.4

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.8 AU - 1.22 AU

Year: 666 Days

Day: 12.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,002,749 km

• M1: 154,235 km (0.091 R)
• M2: 569,818 km (0.089 R)
• M3: 1,407,417 km (0.09 R)
• M4: 2,003,265 km (0.093 R)
• M5: 2,691,565 km (0.113 R)
• M6: 3,101,762 km (0.035 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.2

Radius: 8.2

Gravity: 5.68 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 1.69 AU - 1.81 AU

Year: 1519 Days

Day: 10.3 Hours

Environment

Temp: -176 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,002,749 km

• M1: 102,026 km (0.111 R)
• M2: 443,258 km (0.111 R)
• M3: 727,345 km (0.118 R)
• M4: 1,024,446 km (0.12 R)
• M5: 1,460,225 km (0.092 R)
• M6: 1,923,679 km (0.045 R)
• M7: 2,640,851 km (0.063 R)
• M8: 3,301,924 km (0.087 R)
• M9: 3,601,718 km (0.113 R)
• M10: 4,326,071 km (0.102 R)
• M11: 4,741,505 km (0.088 R)
• M12: 5,263,003 km (0.043 R)
• M13: 5,908,368 km (0.07 R)
• M14: 6,374,664 km (0.037 R)
• M15: 6,961,687 km (0.112 R)
• M16: 7,482,138 km (0.036 R)
• M17: 9,112,754 km (0.087 R)
• M18: 9,465,356 km (0.049 R)
• M19: 11,066,353 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 234.1

Radius: 8.2

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 3.39 AU - 3.51 AU

Year: 4204 Days

Day: 14.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,002,749 km

• M1: 102,026 km (0.095 R)
• M2: 438,322 km (0.107 R)
• M3: 1,041,800 km (0.08 R)
• M4: 2,119,203 km (0.085 R)
• M5: 2,553,935 km (0.098 R)
• M6: 3,846,610 km (0.108 R)
• M7: 4,410,444 km (0.071 R)
• M8: 6,219,681 km (0.118 R)
• M9: 7,348,247 km (0.07 R)
• M10: 7,898,468 km (0.086 R)
• M11: 8,808,323 km (0.083 R)
• M12: 10,642,841 km (0.1 R)
• M13: 13,243,301 km (0.082 R)

Asteroid Belt

Center: 5.07 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 6.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 722

Radius: 5.5

Gravity: 23.87 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 5.37 AU - 7.99 AU

Year: 11326 Days

Day: 23.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,002,749 km

• M1: 79,287 km (0.043 R)
• M2: 531,072 km (0.076 R)
• M3: 885,619 km (0.109 R)
• M4: 1,255,425 km (0.101 R)
• M5: 2,357,513 km (0.052 R)
• M6: 2,538,077 km (0.096 R)
• M7: 2,882,302 km (0.111 R)
• M8: 4,485,991 km (0.085 R)
• M9: 7,340,917 km (0.096 R)
• M10: 12,202,100 km (0.113 R)
• M11: 13,304,487 km (0.078 R)
• M12: 13,750,587 km (0.1 R)
• M13: 14,206,562 km (0.094 R)
• M14: 30,775,274 km (0.109 R)
• M15: 31,893,069 km (0.074 R)
• M16: 33,153,731 km (0.114 R)
• M17: 38,400,876 km (0.111 R)
• M18: 46,755,169 km (0.119 R)
• M19: 52,527,702 km (0.113 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 221 - 12,435 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit